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China
National Standards
In Force
GB/T 21872-2008
Sulphonic acid hardener for foundry no-bake furan resin
Update Date: Aug 9, 2024
Latest Published
May 14, 2008
Implemented
Oct 1, 2008
Abolished
Industry：
Chemical
Region：
China
Issuing Authority：
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of China
Main Content：
This standard specifies the product models and markings, requirements, test methods, inspection rules, marking, packaging, transportation, and storage for sulphonic acid hardeners for foundry no-bake furan resins. It is applicable to sulphonic acid hardeners derived from the sulfonation of toluene and xylene for use in foundry no-bake furan resins.
Operation：
Translations
Sulphonic acid hardener for foundry no-bake furan resin
Free
File Language：English
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