Product Description
Ethylene Glycol Monobutyl Ether (EGBE), also known as 2-Butoxyethanol, Butyl Glycol, or Butyl Cellosolve, is a versatile glycol ether solvent with CAS No. 111-76-2, molecular formula C₆H₁₄O₂, and molecular weight of 118.17 g/mol.
It is a clear, colourless liquid with a mild ether-like odour, featuring excellent solvency, good water miscibility, and compatibility with most organic solvents. With balanced volatility and strong dissolving capabilities, it is widely used in paints and coatings, cleaning agents, inks, varnishes, hydraulic fluids, textile processing, and industrial formulations.
The product has a melting point of -74.8°C, a boiling point of 171°C, and a closed-cup flash point of 62°C. Our industrial-grade product offers a minimum purity of 99%, ensuring consistent quality and reliable performance across various applications.
For transportation, it is classified as UN2810, Class 6.1 (Toxic Substance), Packing Group III, subject to applicable transport regulations. Standard export packaging is 186 kg iron drums, suitable for international shipment.
Chemical Properties
| Melting point | -70 °C |
| Boiling point | 171 °C |
| density | 0.902 g/mL at 25 °C(lit.) |
| vapor density | 4.1 (vs air) |
| vapor pressure | <1 mm Hg ( 20 °C) |
| refractive index | n20/D 1.419(lit.) |
| Fp | 140 °F |
| storage temp. | Store below +30°C. |
| solubility | 900g/l completely miscible |
| pka | 14.42±0.10(Predicted) |
| form | Liquid |
| color | Clear |
| Odor | Mild, characteristic; slightly rancid; mild ethereal. |
| PH | 7 (H2O, 20℃)(as aqueous solution) |
| Odor Threshold | 0.043ppm |
| explosive limit | 1.1-10.6%(V) |
| Water Solubility | miscible |
| λmax | λ: 230 nm Amax: 1.0 λ: 250 nm Amax: 0.10 λ: 275 nm Amax: 0.05 λ: 300-400 nm Amax: 0.01 |
| Merck | 14,1559 |
| BRN | 1732511 |
Henry's Law Constant | (x 10-6 atm?m3/mol): 2.36 (approximate - calculated from water solubility and vapor pressure) |
Dielectric constant | 5.2999999999999998 |
| Exposure limits | TLV-TWA skin 25 ppm (121 mg/m3) (ACGIH), 50 ppm (242 mg/m3) (OSHA); STEL 75 ppm (363 mg/m3) (ACGIH);IDLH 700 ppm (NIOSH). . |
| LogP | 0.81 at 20℃ |
CAS DataBase Reference | 111-76-2(CAS DataBase Reference) |
| IARC | 3 (Vol. 88) 2006 |
NIST Chemistry Reference | 2-n-Butoxy-1-ethanol(111-76-2) |
EPA Substance Registry System | Ethylene glycol monobutyl ether (111-76-2) |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 20/21/22-36/38 |
| Safety Statements | 36/37-46 |
| OEB | A |
| OEL | TWA: 5 ppm (24 mg/m3) [skin] |
| RIDADR | 1986 |
| WGK Germany | 1 |
| RTECS | KJ8575000 |
| Autoignition Temperature | 473 °F |
| TSCA | Yes |
| HS Code | 2909 43 00 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Hazardous Substances Data | 111-76-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 1.48 g/kg (Smyth) |
| IDLA | 700 ppm |
Product Application
It is a core glycol ether solvent widely used in nitrocellulose paints, baking enamels, varnishes and printing inks, serving as coalescing agent and paint thinner to improve film flatness. It is popular in industrial cleaning formulations, including metal degreasers, paint removers and heavy oil cleaners. It can act as fibre wetting agent and dye penetrant in textile and leather processing. It also works as dispersant and stabilizer for agrochemical formulations, and as extraction solvent in fine chemical production. Its dual hydrophilic and lipophilic properties make it a versatile auxiliary solvent for many industrial formulation systems.
