Name: 2-Butene oxide
SKU: 3266-23-7

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Basic Information

Molecular Structure:
CAS No.:	3266-23-7
Name:	2-Butene oxide
Article Data:	42

Formula:	C4H8 O
Molecular Weight:	72.1069
Synonyms:	Butane,2,3-epoxy- (8CI); 2,3-Butylene oxide; 2,3-Dimethyloxirane; 2,3-Epoxybutane;2-Butene epoxide; 2-Butene oxide; 2-Butylene oxide; b-Butylene oxide; b-Oxybutene
EINECS:	221-877-8
Density:	0.804
Boiling Point:	56.5°Cat760mmHg
Flash Point:	-26 ºC
Solubility:	>=10 g/100 mL at 20 C
Appearance:	Clear colorless liquid.
Hazard Symbols:
Risk Codes:	R11;R36/37/38
Safety:	Mutation data reported. When heated to decomposition it emits acrid smoke and fumes.
Transport Information:	UN 3271
PSA:	12.53000
LogP:	0.79360

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Chemistry

IUPAC Name: 2,3-Dimethyloxirane
Product Name: 2-Butene oxide
The MF of 2,3-Dimethyloxirane (CAS NO.3266-23-7) is C₄H₈O.

The MW of 2,3-Dimethyloxirane (CAS NO.3266-23-7) is 72.11.
Synonyms of 2,3-Dimethyloxirane (CAS NO.3266-23-7): 2,3-Epoxy-butan ; 2-Butene epoxide ; 2-Buteneexpoxide ; beta-Butylene oxide ; beta-Oxybutene ; Butane, 2,3-epoxy-
Product Categories: Industrial/Fine Chemicals;Simple 3-Membered Ring Compounds
Apperance: Clear colorless liquid
Index of Refraction: 1.395
EINECS: 221-877-8
Density: 0.855 g/ml
Flash Point: -15 °C
Boiling Point: 56.5 °C

Uses

2,3-Dimethyloxirane (CAS NO.3266-23-7) is used as epoxides,intermediates in organic synthesis.

Toxicity Data With Reference

1.		mmo-sat 5 µmol/plate		JJATDK JAT, Journal of Applied Toxicology. 2 (1982),282.
2.		mmo-klp 20 µmol/L		MUREAV Mutation Research. 89 (1981),269.

Consensus Reports

EPA Genetic Toxicology Program. Reported in EPA TSCA Inventory.

Safety Profile

Mutation data reported. When heated to decomposition it emits acrid smoke and fumes.Safety information of 2,3-Dimethyloxirane (CAS NO.3266-23-7):
Hazard Codes F, Irritant Xi
Risk Statements
11 Highly Flammable
36/37/38 Irritating to eyes, respiratory system and skin
Safety Statements
16 Keep away from sources of ignition - No smoking
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36 Wear suitable protective clothing
RIDADR UN 3271 3/PG 2
WGK Germany 3
RTECS EK3855000

Specification

Epoxides, such as 2-Butene oxide, are highly reactive. They polymerize in the presence of catalysts or when heated. These polymerization reactions can be violent. Compounds in this group react with acids, bases, and oxidizing and reducing agents. They react, possibly violently with water in the presence of acid and other catalysts.