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Polyisobutylene
Linear Formula:
[CH
2
C(CH
3
)
2
]
n
CAS Number:
9003-27-4
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Sigma-Aldrich (2)
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Polymer Composition
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Reference Material Type
Special Grade
pharmaceutical primary standard (1)
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Product Number
Description
Pricing
181455
Polyisobutylene,
average M
w
~500,000, average M
n
~200,000 by GPC/MALLS, average M
v
~420,000
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181463
Polyisobutylene,
average M
w
~1,000,000, average M
n
~600,000 by GPC/MALLS, average M
v
~1,200,000
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1546966
Polyisobutylene,
United States Pharmacopeia (USP) Reference Standard
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