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Chinese National Standard Category: Basic standards and general methods for synthetic resin and plastic

English Title: Polymethylene polyphenyl isocyanate-Determination of isocyanato content
Chinese Title: 多亚甲基多苯基异氰酸酯中异氰酸根含量测定方法
Standard No.: GB 12009.4-1989
Category No.: G31
Issued by: China Petroleum and Chemical Industry Federation
Issued on: 1989-12-25
Implemented on: 1990-11-1
Status: abolished
Superseded by:GB/T 12009.4-2016 Plastics―Aromatic isocyanates for use in the production of polyurethane―Part 4:Determination of isocyanate content
Superseded on:2016-9-1
Abolished on:2016-09-01
Superseding:
Word Count:1500 words
Similar Standards: GB/T 3682-2000   GB/T 12010.5-1989   GB/T 9350-1988   GB 6344-1986   GB/T 40934-2021   GB/T 15596-2021   T/CCASC 2002-2022   GB/T 43297-2023   GB/T 43289-2023   GB/T 43316.4-2023   GB/T 43355-2023   GB/T 42918.2-2023   GB/T 31402-2023   GB/T 21461.2-2023   GB/T 43288-2023   GB/T 42976-2023   GB/T 43019.7-2023   GB/T 43085-2023   GB/T 43019.5-2023   GB/T 43084.2-2023  
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