181455

Polyisobutylene

average M_w ~500,000, average M_n ~200,000 by GPC/MALLS, average M_v ~420,000

• Linear Formula: [CH₂C(CH₃)₂]_n
• CAS Number: 9003-27-4
• MDL number: MFCD00084436
• PubChem Substance ID: 24850935
• NACRES: NA.23

Properties

• form: chunks
• Quality Level: 100
• mol wt: average M_n ~200,000 by GPC/MALLS; average M_v ~420,000; average M_w ~500,000
• refractive index: n20/D 1.5045
• transition temp: T_g −64 °C
• density: 0.92 g/mL at 25 °C (lit.)
• SMILES string: CC(C)=C
• InChI: 1S/C4H8/c1-4(2)3/h1H2,2-3H3
• InChI key: VQTUBCCKSQIDNK-UHFFFAOYSA-N

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves