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ETHYLENE OXIDECAS#75-21-8

Chemical Name：ETHYLENE OXIDE

CAS No.:75-21-8

Appearance: Colorless gas

Molecular Formula：C2H4O

Molecular weight:44.05

Sample: Available

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Product Details

Products Description of Ethylene oxideCAS#75-21-8

Ethylene oxide industrial product purity ≥ 99%, colorless flammable gas, with ether-like odor. Melting point -112.4℃, boiling point 10.7℃. Vapor pressure 1095 mmHg (25℃), relative density 0.89 (20℃, liquid). Solubility in water: highly soluble, highly soluble in ethanol and ether. Unstable, prone to polymerization, incompatible with strong oxidants and acids.

Parameters

Melting point	−111 °C(lit.)
Boiling point	10.7 °C(lit.)
density	0.882 g/mL at 25 °C(lit.)
vapor pressure	1095 mmHg at 20 °C
refractive index	n20/D 1.3597(lit.)
Fp	<-17.7℃
storage temp.	2-8°C
form	Colorless gas
Odor	Sweet odor detectable at 257 to 690 ppm
Merck	3802
BRN	102378
Exposure limits	TLV-TWA 1.8 mg/m3 (1 ppm) (ACGIH), 0.18 mg/m3 (0.1 ppm), 5 ppm/10 min (NIOSH).
Dielectric constant	14.0（-4℃）
InChIKey	IAYPIBMASNFSPL-UHFFFAOYSA-N
LogP	-0.30
CAS DataBase Reference	75-21-8(CAS DataBase Reference)
IARC	1 (Vol. Sup 7, 60, 97, 100F) 2012
EPA Substance Registry System	Ethylene oxide (75-21-8)

Safety Information

Hazard Codes	F+,T,F
Risk Statements	45-46-12-23-36/37/38-39/23/24/25-23/24/25-11-67-20-36/37-19-6
Safety Statements	53-45-36/37-16-24/25-23-26
RIDADR	UN 2037 2.3
OEB	C
OEL	TWA: <0.1 ppm (0.18 mg/m3), Ceiling: 5 ppm (9 mg/m3) [10-min/day]
WGK Germany	2
RTECS	KX2450000
F	4.5-31
Autoignition Temperature	429 °C
DOT Classification	2.3, Hazard Zone D (Gas poisonous by inhalation)
HazardClass	2.3
HS Code	29101000
Hazardous Substances Data	75-21-8(Hazardous Substances Data)
Toxicity	LD50 oral (rat) 72 mg/kg LC50 inhal (rat) 800 ppm (1600 mg/m3) PEL (OSHA) 1 ppm (2 mg/m3) TLV-TWA (ACGIH) 1 ppm (2 mg/m3)
IDLA	800 ppm

Product Application of THYLENE OXIDECAS#75-21-8

The major use of ethylene oxide in the United States (accounting for over 99% of production) is as an intermediate in the production of several industrial chemicals (ATSDR 1990, IARC 1994). The remainder is used in the gaseous form, either alone or combined with nitrogen, carbon dioxide, or dichlorofluoromethane as a sterilizing agent, disinfectant, fumigant, or insecticide.

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