I19551
Isoprene
99%, contains <1000 ppm p-tert-butylcatechol as inhibitor
Synonym(s):
2-Methyl-1,3-butadiene
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About This Item
Linear Formula:
CH2=CHC(CH3)=CH2
CAS Number:
Molecular Weight:
68.12
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
MDL number:
Beilstein/REAXYS Number:
969158
Assay:
99%
Form:
liquid
vapor density
2.35 (vs air)
Quality Level
vapor pressure
8.82 psi ( 20 °C)
assay
99%
form
liquid
autoignition temp.
428 °F
contains
<1000 ppm p-tert-butylcatechol as inhibitor
expl. lim.
10 %
refractive index
n20/D 1.422 (lit.)
bp
34 °C (lit.)
mp
−146 °C (lit.)
density
0.681 g/mL at 25 °C (lit.)
storage temp.
2-8°C
SMILES string
CC(=C)C=C
InChI
1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3
InChI key
RRHGJUQNOFWUDK-UHFFFAOYSA-N
Application
Isoprene in the presence of sec-butyllithium as an initiator can undergo sequential anionic polymerization with styrene and methyl methacrylate to form polystyrene-block-polyisoprene-block-poly(methylmethacrylate) (SIM) and polyisoprene-block-polystyrene-block-poly(methyl methacrylate) (ISM), two asymmetric triblock terpolymers. It is also used in the asymmetric synthesis of polystyrene-block-polyisoprene (PS-b-PI) diblock copolymers.
Packaging
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signalword
Danger
hcodes
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
ppe
Eyeshields, Faceshields, Gloves
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