I19551

Isopren

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

• Synonym(e): 2-Methyl-1,3-butadien
• Lineare Formel: CH₂=CHC(CH₃)=CH₂
• CAS-Nummer: 78-79-5
• Molekulargewicht: 68.12
• Beilstein: 969158
• MDL-Nummer: MFCD00008600
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 24895956
• NACRES: NA.22

Eigenschaften

• Dampfdichte: 2.35 (vs air)
• Qualitätsniveau: 200
• Dampfdruck: 8.82 psi ( 20 °C)
• Assay: 99%
• Form: liquid
• Selbstzündungstemp.: 428 °F
• Enthält: <1000 ppm p-tert-butylcatechol as inhibitor
• Expl.-Gr.: 10 %
• Brechungsindex: n20/D 1.422 (lit.)
• bp: 34 °C (lit.)
• mp (Schmelzpunkt): −146 °C (lit.)
• Dichte: 0.681 g/mL at 25 °C (lit.)
• Lagertemp.: 2-8°C
• SMILES String: CC(=C)C=C
• InChI: 1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3
• InChIKey: RRHGJUQNOFWUDK-UHFFFAOYSA-N

Beschreibung

Anwendung

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.

Verpackung

View returnable container options.

Sicherheitshinweise

• Piktogramme: GHS02,GHS08
• Signalwort: Danger
• H-Sätze: H224,H341,H350,H412
• P-Sätze: P202 - P210 - P233 - P273 - P308 + P313 - P403 + P233
• Gefahreneinstufungen: Aquatic Chronic 3 - Carc. 1B - Flam. Liq. 1 - Muta. 2
• Lagerklassenschlüssel: 3 - Flammable liquids
• WGK: WGK 3
• Flammpunkt (°F): -65.2 °F - closed cup
• Flammpunkt (°C): -54 °C - closed cup
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves