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2-Butoxyethanol

2-Butoxyethanol is a colorless, high-boiling liquid organic compound with the molecular formula C₆H₁₄O₂ and a mild ether-like odor, classified as a glycol ether that functions as a primary alcohol where one methyl hydrogen of ethanol is substituted by a butoxy group.^[1]^[2] Its physical properties include a boiling point of 171 °C, a melting point of -70 °C, and miscibility with water and many organic solvents, enabling its role in dissolving both hydrophilic and hydrophobic substances.^[3] Industrially produced via the reaction of ethylene oxide with n-butanol, it serves primarily as a versatile solvent in applications such as water-based paints, varnishes, household cleaners, inks, and cosmetics, where it enhances product stability and efficacy by coupling water solubility with oil-dissolving power.^[4]^[5]^[6] However, empirical data from toxicological studies indicate moderate acute toxicity, with inhalation or dermal exposure at high levels causing hemolysis, reduced hemoglobin, irritation to eyes and respiratory tract, and potential liver and kidney damage, though it lacks evidence of carcinogenicity or mutagenicity in humans.^[7]^[6] Regulatory bodies have established exposure limits, such as OSHA's permissible exposure level of 50 ppm, to mitigate occupational risks while preserving its industrial utility.^[2]^[7]

History

Discovery and Early Development

2-Butoxyethanol emerged from early 20th-century advancements in glycol ether synthesis, pioneered by Carbide and Carbon Chemicals Corporation (predecessor to Union Carbide) as part of efforts to develop superior industrial solvents. The compound, synthesized via the reaction of ethylene oxide with n-butanol, followed the 1920s patenting of analogous ethyl cellosolve by Dr. Charles O. Young, which established the foundational process for monoalkyl ether derivatives of ethylene glycol. These developments addressed limitations of conventional alcohols, providing a solvent with enhanced solvency for resins, oils, and nitrocellulose in lacquers and coatings. Commercialization accelerated in the 1930s and 1940s as demand grew for versatile, high-boiling-point solvents in paints, inks, and cleaning formulations, where 2-butoxyethanol demonstrated superior coupling and penetration properties over ethanol or methanol derivatives. By the mid-20th century, industrial production had scaled, reflecting its integration into expanding manufacturing sectors. U.S. output reached 130 million pounds annually by 1972, underscoring its role in broadening solvent applications beyond traditional options.^[5] This growth paralleled the petrochemical boom, with 2-butoxyethanol becoming a key E-series glycol ether by the 1950s.^[8]

Properties

Physical Characteristics

2-Butoxyethanol is a colorless liquid with a mild, ether-like odor.^[9] Its molecular formula is C₆H₁₄O₂.^[1] The compound has a boiling point of 171 °C at standard pressure.^[1] Its density is 0.90 g/cm³ at 20 °C, making it less dense than water.^[1] The vapor pressure is approximately 0.8 mmHg at 20 °C, which corresponds to moderate volatility suitable for solvent applications.^[1] 2-Butoxyethanol is fully miscible with water and most organic solvents due to its amphiphilic structure featuring both hydrophobic butyl and hydrophilic ethoxyhydroxy groups.^[1]

Physical Property	Value	Reference Conditions
Melting Point	-75 °C	Literature value
Flash Point	67 °C	Closed cup

Chemical Behavior and Solubility

2-Butoxyethanol demonstrates infinite miscibility with water, forming homogeneous solutions in all proportions due to its polar hydroxyl group facilitating hydrogen bonding.^[1] This property distinguishes it from many non-polar ethers, which exhibit limited water solubility, and enables its role in aqueous-based formulations.^[6] It is also fully miscible with organic solvents such as ethanol, diethyl ether, and acetone, enhancing its versatility as a co-solvent.^[12] The amphiphilic structure of 2-butoxyethanol, featuring a hydrophobic butyl chain and a hydrophilic hydroxyethoxy moiety, imparts surfactant-like properties that lower interfacial tension between immiscible phases.^[13] This dual nature allows it to bridge hydrophilic and hydrophobic substances, promoting emulsion stability in mixed solvent systems without forming traditional micelles at low concentrations.^[14] Under standard ambient conditions, 2-butoxyethanol remains chemically stable with minimal reactivity, showing no tendency for hazardous decomposition or polymerization.^[15] In biological environments, however, it is metabolized primarily through oxidation of the terminal alcohol group to form 2-butoxyacetic acid, reflecting its susceptibility to enzymatic hydroxylation.^[16]

Production

Industrial Synthesis Methods

The primary industrial method for synthesizing 2-butoxyethanol is the ethoxylation of anhydrous n-butanol with ethylene oxide in the presence of a catalyst.^[17] This reaction proceeds via nucleophilic attack of the alkoxide ion derived from n-butanol on the epoxide ring of ethylene oxide, yielding the desired monoether product under controlled conditions of temperature (typically 120–180°C) and pressure (1–5 atm) to ensure high conversion rates exceeding 90%.^[18] The process is highly efficient for large-scale operations, with raw material inputs dominated by petrochemical-derived ethylene oxide and n-butanol, enabling cost-effective production due to the simplicity and scalability of the reactor systems employed.^[17] To optimize selectivity and minimize byproducts, the ethylene oxide to n-butanol molar ratio is strictly controlled near 1:1, preventing excessive oligomerization that would form diethylene glycol monobutyl ether (up to 0.2% impurity) or higher analogs.^[17] ^[19] Post-reaction purification involves fractional distillation under vacuum to separate the target compound (boiling point 171.2°C), achieving technical-grade purity >99% while rejecting unreacted alcohols, water, and trace glycols.^[17] This purification step is critical for downstream applications, as residual byproducts can affect solvent performance, and modern processes incorporate recycling of excess n-butanol to enhance overall yield and reduce waste.^[17] Less commonly, 2-butoxyethanol can be produced via the Williamson ether synthesis variant, alkylating ethylene glycol or ethylene chlorohydrin with dibutyl sulfate under basic conditions using sodium hydroxide, though this route generates more inorganic salts and is disadvantaged by lower atom economy compared to the dominant ethoxylation.^[17] By 1983, U.S. production volumes exceeded 230 million pounds annually, reflecting the method's entrenched role in high-volume glycol ether manufacturing.^[17]

Applications

Solvents in Coatings and Paints

2-Butoxyethanol functions as a key solvent in protective surface coatings, including spray lacquers, quick-dry lacquers, enamels, varnishes, and latex paints, where it dissolves resins such as nitrocellulose and synthetic polymers to achieve uniform formulations.^[20]^[4] Typical concentrations range from 1% to 30% by volume in these coatings, depending on the system, with 2–5% common in aqueous formulations to maintain stability and performance.^[4] Its high solvency power stems from a balance of hydrophilic and hydrophobic groups, allowing effective dissolution of both water-soluble and organic components while providing complete miscibility in water and many organic solvents at room temperature.^[4] This enables superior viscosity control compared to some alternatives, reducing solution thickness for smoother application and improved flow during brushing or spraying.^[21]^[22] In quick-dry lacquers and enamels, 2-butoxyethanol's moderate evaporation rate supports enhanced drying characteristics and film leveling, promoting even surface formation without defects like orange peel or sagging.^[4]^[21] These properties contribute to its preference in industrial coatings for wood finishes and metal surfaces, where empirical testing shows better resin compatibility and application efficiency than faster-evaporating solvents alone.^[4]

Cleaning and Household Products

2-Butoxyethanol serves as a key solvent in household and industrial cleaning formulations, enabling the dissolution of organic residues such as oils, greases, and dirt that are not readily water-soluble.^[23]^[24] Its amphiphilic properties allow it to couple hydrophobic soils with aqueous cleaning solutions, facilitating emulsification and removal during rinsing.^[5] This makes it particularly effective in products like glass cleaners, all-purpose spray cleaners, liquid soaps, floor strippers, and degreasers, where it enhances cleaning efficacy against stubborn contaminants.^[23]^[19] The compound's utility in these applications stems from its ability to dissolve greases and oils at low concentrations, typically sufficient for performance without requiring high dosages that could compromise formulation stability or cost.^[19]^[23] For instance, it improves the emulsifying action of soaps when incorporated as a mutual solvent for mineral oils, allowing cleaners to handle both water-based and oil-based soils effectively.^[5] Historical data indicate its presence in over 430 cleaning products in Australia as of 1996, including general surface cleaners and spot removers, underscoring its widespread adoption in detergent systems.^[19] In the United States, surveys from 1977 reported it in more than 740 products overall, with nearly half designated for household use, reflecting its role in enabling versatile, high-performance cleaners.^[5]

Petroleum Industry Uses

In the petroleum industry, 2-butoxyethanol serves primarily as a surfactant in drilling fluids and hydraulic fracturing operations, where it reduces surface tension to enhance fluid wettability and improve the dispersion of additives, thereby facilitating better penetration into reservoir formations.^[25] This property contributes to operational efficiency by minimizing fluid loss to the formation and stabilizing emulsions in water-based mud systems.^[26] The compound also plays a role in enhanced oil recovery (EOR) techniques, particularly in shale-rich reservoirs, acting as a mutual solvent when combined with diluted seawater to alter rock wettability and mobilize residual oil, with laboratory studies demonstrating increased recovery yields through imbibition processes.^[27] In pipeline and wellbore maintenance, 2-butoxyethanol is incorporated into cleaning compositions to dissolve iron sulfide scales and organic deposits, enabling effective removal without excessive mechanical intervention, as evidenced in formulations targeting FeS accumulation.^[28] These applications persist due to demonstrated engineering benefits in yield optimization and maintenance, outweighing toxicity concerns in controlled industrial settings.^[29]

Toxicology

Acute Exposure Effects

Acute inhalation exposure to 2-butoxyethanol vapors primarily causes irritation to the mucous membranes of the eyes, nose, and upper respiratory tract, often accompanied by symptoms such as headache, nausea, dizziness, and a metallic taste in the mouth.^[4] Human studies indicate that mild ocular and nasal irritation may occur at concentrations around 25 ppm for short durations (10-120 minutes), while more pronounced effects, including throat irritation and belching, have been reported at levels up to 50 ppm.^[30] The odor threshold is detectable at 0.1-0.4 ppm, but sensory irritation thresholds are higher, with a no-observed-adverse-effect level (NOAEL) for discomfort and respiratory irritation established at 20 ppm in controlled human exposures.^[31] Recovery from these effects is typically rapid and complete upon cessation of exposure and removal to fresh air.^[4] Dermal contact with undiluted 2-butoxyethanol or concentrated solutions results in moderate skin irritation, characterized by redness, dryness, and potential defatting of the skin, though it is not a severe sensitizer.^[4] Direct ocular exposure causes immediate severe irritation, including pain, redness, and possible corneal damage, as evidenced by animal data corroborated by human case reports.^[32] In a documented workplace incident involving seven clerical workers, acute exposure led to severe immediate eye and upper respiratory irritation, presyncope, and nausea, resolving without long-term sequelae after prompt intervention.^[16] Hemolytic effects, a hallmark of acute high-dose exposure in rodents (observed at oral doses >100 mg/kg due to the metabolite butoxyacetic acid), are far less pronounced in humans owing to differences in red blood cell sensitivity and faster metabolic clearance of the metabolite.^[6] In vitro assessments confirm that human erythrocytes exhibit sub-hemolytic responses to butoxyacetic acid at concentrations that lyse rat cells, and clinical hemolysis remains rare in human acute exposures, even at levels causing systemic symptoms.^[33] Erythrocyte osmotic fragility does not significantly alter in humans following controlled inhalation exposures up to 87 ppm for 4 hours.^[30]

Chronic and Long-Term Risks

Chronic exposure to 2-butoxyethanol via inhalation or dermal routes in occupational settings has not demonstrated conclusive evidence of carcinogenicity in humans, with epidemiological studies showing no increased cancer incidence among exposed workers. Animal studies, including National Toxicology Program (NTP) inhalation experiments at doses up to 250 ppm for two years, reported hemangiosarcomas in male mice and forestomach squamous cell carcinomas, but equivocal hepatocellular adenomas in female rats; however, these findings exhibit limited relevance to humans due to species-specific metabolic differences, such as greater susceptibility to hemolysis in rodents and absence of a forestomach in humans. The International Agency for Research on Cancer (IARC) classifies 2-butoxyethanol as Group 3 (not classifiable as to carcinogenicity to humans), citing inadequate human data and limited mechanistic concordance with rodent outcomes.^[34]^[35] High-dose animal models reveal potential liver and kidney effects from repeated exposure, with intermediate-duration studies in rats showing increased kidney weights and histopathological changes at airborne concentrations exceeding 100 ppm, often secondary to hemolytic anemia and metabolite accumulation like butoxyacetic acid. In contrast, human occupational data from controlled environments with ventilation indicate minimal incidence of such organ toxicity; for instance, Agency for Toxic Substances and Disease Registry (ATSDR) reviews of worker cohorts exposed below 25 ppm report no consistent liver enzyme elevations or renal dysfunction, attributing lower risk to humans' reduced hemolytic sensitivity—human erythrocytes require over threefold higher concentrations for lysis compared to rat cells. Dose-response analyses confirm a threshold below occupational exposure limits (e.g., ACGIH TLV of 20 ppm), where no-observed-adverse-effect levels (NOAELs) in rodents translate to margins of safety exceeding 10-fold for humans after pharmacokinetic adjustments.^[4]^[16] The Cosmetic Ingredient Review (CIR) Expert Panel's 2025 amended assessment reaffirms the safety of butoxyethanol in cosmetics at typical low concentrations (up to 5% in nail products, lower elsewhere), finding insufficient evidence to warrant revised restrictions despite re-examination of animal carcinogenicity data, as human dermal absorption and systemic exposure remain negligible under diluted use conditions. This counters claims of inherent long-term hazard by emphasizing empirical dose-response gaps between exaggerated animal models and real-world dilute applications, with no substantiated reproductive or developmental chronic risks beyond acute thresholds in either species.^[36]

Comparative Human and Animal Data

2-Butoxyethanol (2-BE) demonstrates marked species differences in toxicity, largely attributable to variations in the metabolism and handling of its primary metabolite, butoxyacetic acid (BAA). In rats and mice, BAA accumulates systemically and exerts direct hemolytic effects on erythrocytes by altering membrane integrity and osmotic fragility, leading to anemia at relatively low doses. Humans, however, exhibit faster conjugation and excretion of BAA via pathways producing hippuric acid and carbon dioxide, which substantially attenuates erythrocyte damage and systemic toxicity.^[37]^[38]^[31] In vitro assessments of hemolytic potential confirm this disparity: rat, mouse, and rabbit red blood cells undergo rapid lysis when exposed to BAA concentrations as low as 1-2 mM, whereas human erythrocytes require concentrations exceeding 5 mM for comparable effects, with primate and guinea pig cells displaying intermediate sensitivity. These findings align with in vivo observations where rodents develop pronounced anemia following oral or inhalation exposures, while non-human primates like rhesus monkeys tolerate chronic inhalation of 100-210 ppm for 30-90 days without hemolytic changes or respiratory distress.^[6]^[30]^[16] Acute toxicity metrics further illustrate these differences; the oral LD₅₀ in rats is approximately 470-700 mg/kg, eliciting hemolysis and secondary organ effects, compared to higher thresholds in less sensitive species. No human LD₅₀ data exist due to ethical constraints, but controlled human exposures and pharmacokinetic modeling predict minimal hemolytic risk at occupational levels below 25 ppm, supported by the absence of blood dyscrasias in primate analogs.^[4]^[31] Epidemiological data from occupational cohorts exposed dermally or via inhalation to 2-BE in industrial settings (e.g., painting, cleaning) show no consistent evidence of hemolytic anemia or chronic hematological abnormalities, even at airborne concentrations up to 10-20 ppm over years, contrasting sharply with precautionary extrapolations from rodent models that overestimate human vulnerability. This underscores the necessity of prioritizing human and higher primate data over rodent-derived endpoints for causal risk evaluation, as metabolic and physiological divergences render direct interspecies scaling unreliable without adjustment.^[31]^[19]^[4]

Environmental Impact

Fate and Degradation

2-Butoxyethanol undergoes primary degradation through aerobic microbial processes in environmental compartments such as water and soil.^[39] Under aerobic conditions, it is readily biodegradable, with studies demonstrating substantial breakdown by adapted microbial populations within standard testing periods.^[40] The estimated half-life for biodegradation follows first-order kinetics, ranging from 1 to 4 weeks in aquatic and soil environments.^[41] In groundwater specifically, the biodegradation half-life extends from 14 days to 8 weeks, reflecting variations in microbial activity and substrate availability.^[42] Bioaccumulation potential remains low due to its high water solubility (miscible with water) and low octanol-water partition coefficient (log Kow ≈ 0.83), which limit partitioning into lipid tissues and favor rapid metabolism in organisms.^[41] ^[40] This compound does not meet criteria for bioaccumulative substances under regulatory frameworks like those from the OECD.^[40] Volatilization contributes minimally to attenuation, as indicated by its low Henry's law constant (≈ 2.4 × 10^{-8} atm-m³/mol), resulting in negligible evaporation from moist or dry soils and limited transfer from water to air.^[39] Hydrolysis occurs slowly or not at all under environmental pH conditions, with no significant direct hydrolytic breakdown reported.^[6] Overall, aerobic biodegradation dominates natural removal, supporting its classification as environmentally attenuating without persistent accumulation.^[4]

Ecological Toxicity

2-Butoxyethanol exhibits moderate acute toxicity to aquatic organisms, with 96-hour LC50 values for fish species such as rainbow trout (Oncorhynchus mykiss) ranging from 560 mg/L to 1,474 mg/L under static test conditions following OECD Test Guideline 203.^[15]^[43] Similar results have been observed for daphnia and algae, indicating low to moderate sensitivity across primary trophic levels, with no pronounced chronic effects at sublethal concentrations in standard ecotoxicity assays.^[19] Environmental monitoring data reveal typical surface and wastewater concentrations of 2-butoxyethanol in the microgram per liter (µg/L) range or below, often orders of magnitude lower than acute toxicity thresholds; for instance, wastewater effluents from industrial sources have measured approximately 0.03 mg/L, while predicted environmental concentrations from modeled releases remain far below LC50 values.^[4]^[19] This disparity underscores minimal risk to ecosystems under diffuse release scenarios, as rapid dilution and biodegradation— with half-lives of 1–4 weeks in water and soil—limit persistence.^[41] 2-Butoxyethanol demonstrates low bioaccumulation potential, with a low octanol-water partition coefficient (log Kow ≈ 0.83) and no evidence of biomagnification through food chains, as partitioning favors aqueous phases over lipid tissues in biota.^[42]^[6] Ecotoxicological impacts are thus primarily associated with acute high-concentration events, such as spills, rather than chronic accumulation or trophic transfer, rendering widespread ecological disruption unlikely absent containment failures.^[40]

Regulations

United States Standards

The Occupational Safety and Health Administration (OSHA) establishes a permissible exposure limit (PEL) for 2-butoxyethanol in workplace air of 50 parts per million (ppm) as an 8-hour time-weighted average (TWA), with a skin notation indicating potential significant absorption through the skin, intact or abraded, which must be considered in exposure assessments.^[9] This limit, derived from earlier evaluations of acute toxicity data including hemolysis risks at higher concentrations, prioritizes controlling inhalation and dermal routes based on empirical evidence from animal and limited human studies showing reversible effects below this threshold.^[44] The National Institute for Occupational Safety and Health (NIOSH) recommends a more stringent REL of 5 ppm TWA (skin), reflecting cautious interpretation of data on respiratory irritation and potential systemic effects, though OSHA's PEL remains enforceable.^[45] Under the Toxic Substances Control Act (TSCA), 2-butoxyethanol is listed on the TSCA Chemical Substance Inventory as an active substance, subjecting it to reporting and recordkeeping requirements for manufacturers and importers exceeding certain thresholds, but without prohibitions on production, import, or use, indicating regulatory determination of manageable risks through existing exposure controls rather than outright restriction.^[46] The Environmental Protection Agency (EPA) previously included 2-butoxyethanol (as ethylene glycol monobutyl ether) on the Clean Air Act's list of hazardous air pollutants but removed it in November 2004 following review of toxicological data, including low carcinogenic potential and adequate margins of safety from environmental exposures, emphasizing evidence-based delisting over precautionary persistence on the list.^[47] In hydraulic fracturing operations, federal and state disclosure requirements—such as those under the Bureau of Land Management's rules for federal lands and various state registries—mandate reporting of 2-butoxyethanol when used as a friction reducer or solvent in fracturing fluids, without imposing a nationwide ban, as empirical monitoring has not demonstrated widespread uncontrollable releases necessitating prohibition.^[48] This approach aligns with TSCA and Clean Air Act frameworks, focusing on transparency and site-specific risk management informed by degradation data and low bioaccumulation potential rather than uniform curtailment.^[49]

Canadian and International Frameworks

In Canada, the 2-Butoxyethanol Regulations (SOR/2006-347), which established concentration limits for 2-butoxyethanol in products such as automobile cleaners (up to 10% w/w) and rug or carpet cleaners (up to 6% w/w), were repealed in 2025 and integrated into the broader Certain Products Containing Toxic Substances Regulations (SOR/2025-36).^[50]^[51] This consolidation, effective following publication in the Canada Gazette on March 12, 2025, streamlines oversight of toxic substances under the Canadian Environmental Protection Act, 1999, by maintaining product-specific concentration caps—such as limits below 6% w/w in general cleaning products—to mitigate health risks from dermal and inhalation exposure while permitting industrial applications with proper controls.^[52]^[53] The approach emphasizes risk-based exposure management over outright prohibition, aligning with assessments that tolerable concentrations (e.g., 11 mg/m³ in air) can safeguard public health when adhered to.^[54] Internationally, 2-butoxyethanol is regulated under the European Union's REACH framework (Regulation (EC) No 1907/2006), which classifies it as an irritant to skin and eyes (H315, H319) and acutely toxic via oral, dermal, and inhalation routes (Acute Tox. 3/4 categories), requiring registration, risk assessments, and exposure controls for manufacturers and importers without authorizing unrestricted high-volume use in consumer products like cosmetics (limited to 4% in certain hair dyes).^[55] Harmonized classification under the CLP Regulation (EU) No 1272/2008, updated in 2022 to include specific hazard entries for 2-butoxyethanol, supports global consistency via the Globally Harmonized System (GHS) for labeling and safety data sheets, focusing on protective measures like ventilation and personal protective equipment rather than substance bans.^[56] The International Agency for Research on Cancer (IARC) classifies 2-butoxyethanol as Group 3 (not classifiable as to its carcinogenicity to humans), based on limited evidence in animals and inadequate data in humans, reinforcing regulatory emphasis on acute and irritancy hazards over oncogenic risks.

Industrial Significance

Economic Role and Benefits

The global market for 2-butoxyethanol was valued at approximately $1.2 billion in 2024, with projections estimating growth to $1.85 billion by 2033, reflecting its integral role in solvent-dependent industries such as coatings, cleaning products, and inks.^[57] This expansion is driven by demand for versatile solvents that enhance formulation stability and performance, supporting downstream manufacturing sectors with reliable supply chains for chemical intermediates derived from ethylene oxide and n-butanol.^[58] In industrial applications, 2-butoxyethanol provides superior solvency for both water-soluble and oil-based systems, enabling the creation of concentrated formulations that require lower overall solvent volumes compared to less efficient alternatives, thereby reducing material and transportation costs.^[57] ^[59] Its compatibility with diverse resins and surfactants improves product efficacy, such as faster drying times in lacquers and enhanced grease removal in cleaners, which translates to higher productivity in painting and cleaning operations without necessitating higher concentrations that could elevate expenses.^[23] These attributes position it as a cost-effective option over traditional hydrocarbon solvents, which often demand greater quantities or additional additives to achieve equivalent dissolution power.^[60] The chemical's high production scale underpins employment in petrochemical synthesis and formulation facilities, with its widespread adoption in household and industrial products sustaining ancillary jobs in distribution and quality control across global supply networks.^[61] At regulated exposure levels, these productivity gains from optimized solvency outweigh potential handling costs, affirming its economic viability in compliant industrial practices.

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[43]
[PDF] 2-Butoxyethanol - JMN Specialties, Inc.
Apr 8, 2020 · 111-76-2: Toxicity to fish. : LC50 (Oncorhynchus mykiss (rainbow trout)): 1,474 mg/l. Exposure time: 96 h. Test Type: static test. Method: OECD ...
[44]
https://www.osha.gov/chemicaldata/130
[45]
NIOSH Pocket Guide to Chemical Hazards - 2-Butoxyethanol - CDC
OSHA PEL ; Eye:Irrigate immediately ; Skin:Soap wash promptly ; Breathing:Respiratory support ; Swallow:Medical attention immediately.
[46]
Ethanol, 2-butoxy- - Substance Details - SRS | US EPA
2-Butoxyethanol, Unknown. Water Quality Standards, 2-Butoxy ethanol, In Review, Approved, Nov 26 2021. 2024 CDR TSCA Inv Active, Ethanol, 2-butoxy-, Unknown ...
[47]
List of Hazardous Air Pollutants, Petition Process, Lesser Quantity ...
Nov 29, 2004 · The substance ethylene glycol monobutyl ether (EGBE,2-Butoxyethanol) (CAS Number 111–76–2) is deleted from the list of hazardous air pollutants established by ...
[48]
Hydraulic Fracturing Fluid Disclosure
HYDRAULIC FRACTURING FLUID DISCLOSURE ... US Silica, Proppant, Silica Substrate, 14808-60-7 ... 67-56-1, 10%, 0.00712%. 2-Butoxyethanol, 111-76-2, 50%, 0.03561%.<|control11|><|separator|>
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[PDF] Impacts from the Hydraulic Fracturing Water Cycle on Drinking ... - EPA
General timeline and summary of activities at a hydraulically fractured oil or gas production well. bearing rock.1 The hydraulic fracturing fluid usually.
[50]
2-Butoxyethanol Regulations ( SOR /2006-347)
Column 1, Column 2. Item, Product, Concentration Limit (%) (w/w). 1, Automobile CleanerFootnote for Concentration Limits, 10.0. 2, Rug or Carpet Cleaner ...
[51]
Certain Products Containing Toxic Substances Regulations
Certain Products Containing Toxic Substances Regulations ( SOR /2025-36). Full ... 27 The 2-Butoxyethanol Regulations Footnote are repealed. Return to ...
[52]
Certain Products Containing Toxic Substances Regulations
Mar 12, 2025 · 24 The concentration of 2-butoxyethanol contained in a regulated product is determined in accordance with the Reference method for the analysis ...
[53]
Certain Products Containing Toxic Substances Regulations
The 2-Butoxyethanol Regulations have also been repealed and amalgamated under the Regulations as part of a streamlined approach to product regulation under the ...
[54]
[PDF] Additional Product Concentration Limits - à www.publications.gc.ca
Feb 21, 2005 · In this regard, a Tolerable Concentration (TC) of 11 mg/m³ for 2-BE has been established (Environment and Health Canada, 2002: CEPA PSL.
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2.1 2-Butoxyethanol - Therapeutic Goods Administration (TGA)
Sep 10, 2018 · Scheduling history of ethylene glycol monoalkyl ethers and their acetates. In November 1984, the Poisons Schedule (Standing) Committee (PSC) ...
[56]
The European Union Added 39 Entries into the Annex VI to the CLP ...
May 7, 2022 · The 17 amended entries include cumene, trichlorosilane, vanadium (V) oxide and 2-Butoxyethanol, etc., and the entry corresponding to index ...<|separator|>
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2-Butoxyethanol Market Research Report 2033 - Market Intelo
As per our latest market intelligence, the Global 2-Butoxyethanol market size was valued at $1.2 billion in 2024, and is forecasted to hit $1.85 billion by 2033 ...
[58]
Global 2 Butoxyethanol Market Report 2025 Edition, Market Size ...
Global 2 Butoxyethanol market size 2021 was recorded $1007.07 Million whereas by the end of 2025 it will reach $1284.4 Million. According to the author, ...
[59]
Unlocking the Lesser-Known Benefits of Butyl Glycol
2. industrial and household cleaners: It has excellent solvency and degreasing properties. This makes it an effective ingredient in cleaning products. Butyl ...
[60]
Glycol Ethers vs. Traditional Solvents: A Comparative Analysis
Apr 16, 2025 · Glycol ethers are a group of solvents, like 2-butoxyethanol, often used in water-based products. They're known for dissolving both water ...Missing: savings | Show results with:savings
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Global 2-Butoxyethanol Market 2025 by Manufacturers, Regions ...
Jun 24, 2025 · Global 2-Butoxyethanol market size and forecasts, in consumption value ($ Million), sales quantity (MT), and average selling prices (USD/MT) ...