464953
Isoprene
≥99%
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
EC Number:
201-143-3
UNSPSC Code:
12352100
PubChem Substance ID:
Beilstein/REAXYS Number:
969158
MDL number:
vapor density
2.35 (vs air)
vapor pressure
8.82 psi ( 20 °C)
assay
≥99%
form
liquid
autoignition temp.
428 °F
contains
100-150 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 may be used in the synthesis of asymmetric polystyrene-block-polyisoprene (PS-b-PI) diblock copolymers via sequential anionic polymerization with styrene in the presence of sec-butyllithium as initiator.
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
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Morphology and elasticity of polystyrene-block-polyisoprene diblock copolymers in the melt.
Haenelt TG, et al.
Korea-Australia Rheology Journal, 26(3), 263-275 (2014)
Michaela Stieglmeier et al.
International journal of systematic and evolutionary microbiology, 64(Pt 8), 2738-2752 (2014-06-08)
A mesophilic, neutrophilic and aerobic, ammonia-oxidizing archaeon, strain EN76(T), was isolated from garden soil in Vienna (Austria). Cells were irregular cocci with a diameter of 0.6-0.9 µm and possessed archaella and archaeal pili as cell appendages. Electron microscopy also indicated
H Koc et al.
Journal of breath research, 5(3), 037102-037102 (2011-06-10)
Isoprene is one of the most abundant endogenous volatile organic compounds (VOCs) contained in human breath and is considered to be a potentially useful biomarker for diagnostic and monitoring purposes. However, neither the exact biochemical origin of isoprene nor its