CAS Number:
111-76-2
Chemical Classification:
Glycol ether solvent
Molecular Formula:
C6H14O2
Molecular Weight:
118.18 g/mol
Uses:
It functions as a solvent for chemical production and as a component in various industrial/commercial products.
· Primary Use: An industrial solvent used in the manufacturing of coatings (lacquers, paints, varnish) and inks.
· Industrial & Consumer Product Component: Found in cleaning products, cosmetics, hydraulic fluids, and firefighting foam formulations.
· Chemical Production: Used for organic synthesis.
Origin:
Ethylene glycol monobutyl ether is a synthetic chemical. It is produced industrially through the etherification of ethylene glycol.
What does ETHYLENE GLYCOL MONOBUTYL ETHER do in a formulation?
Its primary functions are as a solvent and viscosity-controlling agent.
Safety Profile:
This is a hazardous chemical requiring strict controls. It is not a common ingredient in modern cosmetics.
Toxicity & Health Hazards:
· Fatal if inhaled.
· Toxic if swallowed or in contact with skin. Animal studies show an oral LD50 of 470 mg/kg in rats.
· Causes damage to organs (e.g., kidneys, liver, central nervous system) through prolonged or repeated exposure.
· Suspected of damaging fertility or the unborn child.
· Vapors irritate eyes and respiratory tract; skin contact causes headache, nausea, dizziness.
Exposure Limits:
· NIOSH Immediately Dangerous to Life and Health (IDLH): 700 ppm.
· Chronic Inhalation Reference Exposure Level (REL): 82 µg/m³.
Physical Hazards:
· Flammable Liquid. Flash point is 67-68°C (152-160°F).
· Autoignition Temperature: ~473°F (245°C).
· Explosive Limits in Air: 1.1% to 10.6%.
First Aid: Immediate measures include fresh air for inhalation, rinsing skin/eyes with water, and seeking immediate medical attention if ingested without inducing vomiting.
Technical profile:
| Property | Values |
| Appearance | Colorless, clear liquid with a mild, pleasant odor |
| Purity | Commercial grades are ≥99% |
| Boiling Point | 169 - 172.5 °C |
| Melting Point | -75 °C |
| Density | 0.902 g/mL at 25°C |
| Refractive Index (n20/D) | 1.419 |
| Viscosity (kinematic) | 3.642 cSt at 20°C |
| pH (20°C in H?O) | ~7 |
Solubility & Volatility:
· Water Solubility: Completely miscible.
· Vapor Density: 4.1 (vs air) – heavier than air, vapors collect in low areas.
· Vapor Pressure: <1 mmHg at 20°C.
Summary:
ethylene glycol monobutyl ether (2-butoxyethanol) is a hazardous industrial solvent with significant toxicity. It is used in coatings, cleaners, and chemical synthesis but poses severe health and flammability risks, requiring professional handling.