464953

Isoprene

≥99%

• Synonym(s): 2-Methyl-1,3-butadiene
• 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

Properties

• 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

Description

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.

Safety Information

• Pictograms: GHS02,GHS08
• Signal Word: Danger
• Hazard Statements: H224,H341,H350,H412
• Precautionary Statements: P202 - P210 - P233 - P273 - P308 + P313 - P403 + P233
• 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