8.21258
2-Methyl-1,3-butadiene
(stabilised) for synthesis
Synonym(s):
2-Methyl-1,3-butadiene, Isoprene
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About This Item
Linear Formula:
CH2=CHC(CH3)=CH2
CAS Number:
Molecular Weight:
68.12
UNSPSC Code:
12352002
EC Index Number:
201-143-3
NACRES:
NA.22
MDL number:
Assay:
≥98.0% (GC)
Form:
liquid
vapor pressure
605 hPa ( 20 °C)
Quality Level
assay
≥98.0% (GC)
form
liquid
autoignition temp.
220 °C
potency
>2000 mg/kg LD50, oral (Rat)
expl. lim.
1-9.7 % (v/v)
bp
34 °C/1013 hPa
mp
-146 °C
transition temp
flash point -54 °C
density
0.68 g/cm3 at 20 °C
SMILES string
CC(=C)C=C
InChI
1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3
InChI key
RRHGJUQNOFWUDK-UHFFFAOYSA-N
Analysis Note
Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.681 - 0.683
Identity (IR): passes test
Density (d 20 °C/ 4 °C): 0.681 - 0.683
Identity (IR): passes test
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
Certificates of Analysis (COA)
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