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Isoprene

≥99%

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
Beilstein:
969158
EC Number:
201-143-3
MDL number:
MFCD00008600
UNSPSC Code:
12352100
PubChem Substance ID:
24870237

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

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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

View returnable container options.

Pictograms

FlameHealth hazard
GHS02,GHS08

Signal Word

Danger

Hazard Statements

H224,H341,H350,H412

Hazard Classifications

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

Storage Class Code

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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2,3-Dimethoxy-1,3-butadiene 95%

Sigma-Aldrich

276030

2,3-Dimethoxy-1,3-butadiene

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)
Russell K Monson et al.
Plant, cell & environment, 36(3), 503-516 (2012-09-25)
Isoprene (2-methyl-1,3-butadiene) is emitted from many plants and it appears to have an adaptive role in protecting leaves from abiotic stress. However, only some species emit isoprene. Isoprene emission has appeared and been lost many times independently during the evolution
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
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
Russell K Monson et al.
The New phytologist, 195(3), 541-559 (2012-06-29)
The leaves of many plants emit isoprene (2-methyl-1,3-butadiene) to the atmosphere, a process which has important ramifications for global and regional atmospheric chemistry. Quantitation of leaf isoprene emission and its response to environmental variation are described by empirically derived equations
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