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59250

Isoprene

purum, ≥98.0% (GC)

Synonym(s):

2-Methyl-1,3-butadiene

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About This Item

Linear Formula:
CH2=CHC(CH3)=CH2
CAS Number:
78-79-5
Molecular Weight:
68.12
EC Number:
201-143-3
UNSPSC Code:
12352100
PubChem Substance ID:
24881395
Beilstein/REAXYS Number:
969158
MDL number:
MFCD00008600
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vapor density

2.35 (vs air)

vapor pressure

8.82 psi ( 20 °C)

grade

purum

assay

≥98.0% (GC)

autoignition temp.

428 °F

contains

~0.01% 4-tert-butylcatechol as stabilizer

expl. lim.

10 %

refractive index

n20/D 1.422

bp

34 °C (lit.)

mp

−146 °C (lit.)

density

0.681 g/mL at 20 °C, 0.681 g/mL at 25 °C (lit.)

SMILES string

CC(=C)C=C

InChI

1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3

InChI key

RRHGJUQNOFWUDK-UHFFFAOYSA-N

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pictograms

FlameHealth hazard
GHS02,GHS08

signalword

Danger

Hazard Classifications

Aquatic Chronic 3 - Carc. 1B - Flam. Liq. 1 - Muta. 2

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

-65.2 °F - closed cup

flash_point_c

-54 °C - closed cup

Regulatory Information

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