This standard specifies the requirements, test methods, inspection rules, signs, packaging, transportation, storage, etc. of polymethylene polyphenyl isocyanate (hereinafter referred to as polymeric MDI). This standard is applicable to polymethylene polyphenylisocyanate obtained by condensation, phosgenation, separation and rectification of aniline.
GB/T 13658-2015 Referenced Document
GB/T 12009.2 Aromatic isocyanates for plastic polyurethane production - Part 2: Determination of hydrolyzed chlorine*， 2016-09-01 Update
GB/T 12009.3 Plastic.Polmethylene polyphenyl isocyanate.Part 3:Determination of viscosity
GB/T 12009.4 Aromatic isocyanates for plastic polyurethane production Part 4: Determination of isocyanate content Amendment No. 1
GB/T 12009.5 Aromatic isocyanates for plastic polyurethane production Part 5: Determination of acidity Amendment No. 1
GB/T 4472 Detemination of density and relative density for chemical products
GB/T 6678 General principles for sampling chemical products
GB/T 6680 General rules for sampling liquid chemical products