Test methods of monomers, catalog, Chinese national standards
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GB/T 12009.1 Isocyanates - Determination of total chlorine content
GB/T 12009.2 Plastics - Aromatic isocyanates for use in the production of polyurethane - Part 2: Determination of hydrolysable chlorine
GB/T 12009.3 Plastics - Polymethylene polyphenyl isocyanate - Part 3: Determination of viscosity
GB/T 12009.4 Plastics - Aromatic isocyanates for use in the production of polyurethane - Part 4: Determination of isocyanate content
GB/T 12009.5 Plastics - Aromatic isocyanates for use in the production of polyurethane - Part 5: Determination of acidity
GB/T 13255.1 Test methods of caprolactam for industrial use - Part 1: Determination of colourity of 50% aqueous caprolactam solution - Spectrometric method
GB/T 13255.2 Test methods of caprolactam for industrial use - Part 2: Determination of crystallizing point
GB/T 13255.3 Test methods of caprolactam for industrial use - Part 3: Determination of permanganate absorption number - Spectrometric method
GB/T 13255.4 Test methods of caprolactam for industrial use - Part 4: Determination of volatile bases content - Titrimetric method after distillation
GB/T 13255.5 Test methods of caprolactam for industrial use - Part 5: Determination of absorbance at a wavelength of 290nm
GB/T 13255.6 Test methods of caprolactam for industrial use - Part 6: Determination of acidity or alkalinity
GB/T 13255.7 Test methods of caprolactam for industrial use - Part 7: Determination of iron content
GB/T 13255.8 Test methods of caprolactam for industrial use - Part 8: Determination of cyclohexanone oxime content
GB/T 17530.2 Determination of purity of industrial use acrylate esters by gas chromatography
GB/T 17530.3 Acrylic acid and acrylate esters for industrial use--Determination of color
GB/T 17530.4 Acrylate esters for industrial use--Determination of acidity
GB/T 17530.5 Acrylic acid and acrylate esters for industrial use--Determination of monomethyl ether of hydroquinone
GB/T 22313 Plastics - Polyols for use in the production of polyurethan - Determination of water content
GB/T 30921.2 Test method of purified terephthalic acid (PTA) for industrial use - Part 2: Determination of metal content
GB/T 30921.3 Test method of purified terephthalic acid (PTA) for industrial use - Part 3: Determination of water content
GB/T 30921.4 Test method of purified terephthalic acid (PTA) for industrial use - Part 4: Determination of titanium content - Diantipyrylmethane photometric method
GB/T 30921.5 Test method of purified terephthalic acid (PTA) for industrial use - Part 5: Determination of acid number
GB/T 30921.6 Test method of purified terephthalic acid (PTA) for industrial use - Part 6: Determination of particle size distribution
GB/T 30921.7 Test method of purified terephthalic acid(PTA) for industrial use - Part 7: Determination of b* value - Color difference meter
GB/T 32471 Plastics - Determination of the isomer ratio in toluene diisocyanates for use in the production of polyurethanes
GB/T 32477 Plastics - Determination of total chlorine content in toluene diisocyanates for use in the production of polyurethanes
GB/T 32686 Test method for organic solvent content in multifunctional acrylates used for UV materials - Headspace capillary gas chromatography
GB/T 32699 Test method for purity of multifunctional acrylates used for UV materials - Capillary gas chromatography