GB - Chinese national standards

Styrene-butadiene rubber, rawDetermination of N-nitrosamines content by gas chromatographyThermo energy analyzer method

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Chlorosulfonted polyethylene(CSM) rubber

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Chlorosulfonylpolyethylene (CSM) rubber

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Test method of purified terephthalic acid (PTA) for industrial usePart 1Determination of concentrations of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL)

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Test method of purified terephthalic acid (PTA) for industrial use—Part 2: Determination of metal content

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Test method of purified terephthalic acid (PTA) for industrial use—Part 3: Determination of water content

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Test method of purified terephthalic acid (PTA) for industrial use—Part 4: Determination of titanium content—Diantipyrylmethane photometric method

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Test methods of purified terephthalic acid (PTA) for industrial use—Part 5Determination of acid number

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Test methods of purified terephthalic acid (PTA) for industrial use—Part 6:Determination of particle size distribution

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Test method of purified terephthalic acid(PTA) for industrial use—Part 7: Determination of b* value—Color difference meter

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