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A0961650

Polyisobutylene , Molecular weight 1300 , 9003-27-4

CAS NO.:9003-27-4

Empirical Formula: C4H8

Molecular Weight: 56.1063

MDL number: MFCD00084436

EINECS: 618-360-8

Pack Size Price Stock Quantity
25g RMB30.40 In Stock
100g RMB72.80 In Stock
500g RMB260.00 In Stock
2.5kg RMB893.60 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 54-56 °C
Boiling point: 300 °C
Density  0.92 g/mL at 25 °C (lit.)
Tg -61
Tg -62
Tg -64
Tg -75
refractive index  n20/D 1.51
Flash point: >212
Flash point: >482
form  slab/chunk
Stability: Stability Combustible. Incompatible with strong oxidizing agents.
InChI InChI=1S/C4H8/c1-4(2)3/h1H2,2-3H3
InChIKey VQTUBCCKSQIDNK-UHFFFAOYSA-N
SMILES C=C(C)C

Description and Uses

polyisobutene (hydrogenated) is an emollient.
Polyisobutylene, sometimes called butyl rubber, and other times PIB, is a vinyl polymer. It's very similar to polyethylene and polypropylene in structure, except that every other carbon is substituted with two methyl groups. It is made from the monomer isobutylene, by cationic vinyl polymerization.
Polyisobutylene is a synthetic rubber, or elastomer. It's special because it's the only rubber that's gas impermeable. That is, it's the only rubber that can hold air for long periods of time. You may have noticed that balloons will go flat after a few days. This is because they are made of polyisoprene, which is not gas impermeable. Because polyisobutylene will hold air, it is used to make things like the inner tubes, liner layers of tires, and the inner liners of basketballs.

Safety

Safety Statements  24/25
WGK Germany  3
RTECS  UD1010000
TSCA  TSCA listed
HS Code  39022000

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