GB 12009.4-89

Method for the determination of isocyanate group content in polymethylene polyphenyl isocyanate

多亚甲基多苯基异氮酸醋中异氮酸根含量测定方法

Standard Type

GB

ICS

N/A

CCS

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Status

N/A

Issue Date

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Implementation

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Responsible Dept

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Drafting Unit

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