2,2,3-Trimethyloxirane

HCID 21158

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Basic information

CAS: 5076-19-7
Standard SMILES: CC1OC1(C)C
InChIKey: QPBYBLZYMNWGMO-UHFFFAOYSA-N
Molecular formula: C5H10O
Average molar mass: 86.134 g/mol
Monoisotopic mass: 86.07316494

Names & identifiers

Preferred name: 2,2,3-Trimethyloxirane
IUPAC: 2,2,3-Trimethyloxirane
English name: 2,3-Epoxy-2-methylbutane
Molecular formula: C5H10O
Molecular weight: 86.13

Names & synonyms

Oxirane, trimethyl-isoamyleneoxideTRIMETHYLOXIRANEtrimethyl-oxiranbeta-isoamyleneoxidebeta-Isoamylene oxide2,2,3-TrimethyloxiraneTRIMETHYLETHYLENE OXIDE2-Methyl-2-butene oxide2-METHYL-2,3-EPOXYBUTANE

Database identifiers

CAS: 5076-19-7
PubChem CID: 21158
DTXSID: DTXSID30863488
EC Number: 225-784-3
Nikkaji: J70.054A

Properties

Physicochemical properties

Boiling point: 75 °C · 75 °C(lit.)
Density: 0.818 g/mL · 0.818 g/mL at 25 °C(lit.)
refractive index: 20 · n20/D 1.3855(lit.)
Flash point: 4 °F · −4 °F
storage temp.: Flammables area
InChI: InChI=1S/C5H10O/c1-4-5(2,3)6-4/h4H,1-3H3
InChIKey: QPBYBLZYMNWGMO-UHFFFAOYSA-N
SMILES: O1C(C)C1(C)C
EWG's Food Scores: 1 · 1
EPA Substance Registry System: Oxirane, trimethyl- (5076-19-7)
Symbol(GHS): 2 · GHS02
Signal word: Danger
Hazard statements: 225 · H225
Precautionary statements: 210 · P210-P233-P240-P241-P242-P243-P280-P303+P361+P353-P370+P378-P403+P235-P501
Hazard Codes: F
Risk Statements: 11 · 11
Safety Statements: 16 · 16
RIDADR: 1993 · UN 1993 3/PG 2
WGK Germany: 2 · 2
RTECS: 3860000 · EK3860000
HS Code: 29109000 · 29109000

Safety & regulation

Safety data

wgk: 2
rtecs: EK3860000
ridadr: UN 1993 3/PG 2
hs_code: 29109000
risk_code: 11
Signal word: Danger
Symbol(GHS): GHS02
hazard_code: F
safety_code: 16
Hazard statements: H225
Precautionary statements: P210-P233-P240-P241-P242-P243-P280-P303+P361+P353-P370+P378-P403+P235-P501

Chemistry & industry

Applications · 1 item

UsesIsoamylene oxide is used commercially for stabilizing the chlorinated hydrocarbons 1,1,1- trichloroethane and trichloroethylene. These hydrocarbons are frequently used in metal cleaning (including light metal alloys) and must, therefore, be stabilized against decomposition and formation of acidic substances during storage and application. The basic stabilizer system consists of either an organic amine or a nitro compound and a low-molecular mass epoxide, to which additional components may be added.

Preparation methods

Preparation2,3-Epoxy-2-methylbutane can be prepared by various methods, e.g., via the chlorohydrin route, with percarboxylic acid, or with hydrogen peroxide in a catalyzed reaction.