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I19551

Isoprene

Name: Isoprene
Brand: ALDRICH

99%, contains <1000 ppm p-tert-butylcatechol as inhibitor

Sinónimos:

2-Methyl-1,3-butadiene

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Acerca de este artículo

Fórmula lineal:

CH₂=CHC(CH₃)=CH₂

Número CAS:

78-79-5

Peso molecular:

68.12

UNSPSC Code:

12352100

NACRES:

NA.22

PubChem Substance ID:

24895956

MDL number:

MFCD00008600

Beilstein/REAXYS Number:

969158

Assay:

99%

Form:

liquid

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Propiedades

vapor density

2.35 (vs air)

Quality Level

200

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

Descripción

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.