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| CAS No.: | 513-81-5 |
|---|---|
| Name: | 2,3-Dimethyl-1,3-butadiene |
| Article Data: | 191 |
| Molecular Structure: | |
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|
|
| Formula: | C6H10 |
| Molecular Weight: | 82.1454 |
| Synonyms: | 1,3-Butadiene, 2,3-dimethyl-;2,3-DiMethyl-1,3-butadiene;2,3-dimethylbuta-1,3-diene; |
| Density: | 0.699g/cm3 |
| Melting Point: | -76oC(lit.) |
| Boiling Point: | 68.8°Cat760mmHg |
| Flash Point: | °C |
| Appearance: | Clear colorless liquid |
| Hazard Symbols: |
 F
|
| Risk Codes: | R11; R65 |
| Safety: | Forms explosive polymeric peroxides on exposure to air. Explodes on contact with thiazyl fluoride. Ignites on contact with oxygen + ozone above −78°C. When heated to decomposition it emits acrid smoke and fumes. |
| PSA: | 0.00000 |
| LogP: | 2.13860 |
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Chemistry
Chemistry informtion about 2,3-Dimethyl-1,3-Butadiene (CAS NO.513-81-5) is:
IUPAC Name: 2,3-Dimethylbuta-1,3-Diene
Synonyms: 2,3-Dimethyl-3-Butadiene ; 2,3-Dimethylbutadiene ; 2,3-Dimethylenebutane ; 2,3-Dimethylerythrene,Diiso-propenyl ; Biisopropenyl ; CH2=C(CH3)C(CH3)=CH2 ; Diisopropenyl ; 2,3-Dimethyl-Buta-1,3-Diene
Product Categories: Acyclic ; Alkenes ; Organic Building Blocks ; DID - DINChemical Class ; NeatsGasoline, Diesel,&Petroleum ; Substance classes ; Alpha Sort ; D ; DAlphabetic ; Hydrocarbons ; Olefins ; Volatiles/ Semivolatiles
MF: C6H10
MW: 82.14
EINECS: 208-172-0
Density: 0.699 g/cm3
Melting Point: −76 °C(lit.)
Flash Point: °C
Boiling Point: 68.8 °C at 760 mmHg
Vapour Pressure: 150 mmHg at 25°C
Enthalpy of Vaporization: 29.76 kJ/mol
Refractive Index: n20/D 1.438(lit.)
Storage temp.: 2-8°C
Merck: 14,3238
BRN: 605285
Following is the molecular structure of 2,3-Dimethyl-1,3-Butadiene (CAS NO.513-81-5) is:
Production
Raw materials are Calcium chloride-->Hydroquinone-->Pinacol .
Safety Profile
Forms explosive polymeric peroxides on exposure to air. Explodes on contact with thiazyl fluoride. Ignites on contact with oxygen + ozone above −78°C. When heated to decomposition it emits acrid smoke and fumes.
Hazard Codes:
F
Risk Statements:
R11:Highly flammable.
Safety Statements:
S16:Keep away from sources of ignition.
S23:Do not breathe vapour.
RIDADR: UN 3295 3/PG 2
WGK Germany: 3
F:
F 9 Keep under nitrogen.
HazardClass: 3
PackingGroup: II
Specification
2,3-Dimethyl-1,3-Butadiene (CAS NO.513-81-5) is a clear colorless liquid. To protect yourself, you can put on eyeshields, faceshields, full-face respirator (US), gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter.