GB - Chinese national standards

Test methods of caprolactam for industrial use - Part 1: Determination of colourity of 50% aqueous caprolactam solution - Spectrometric method

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Test methods of caprolactam for industrial use - Part 2: Determination of crystallizing point

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Test methods of caprolactam for industrial use - Part 3: Determination of permanganate absorption number - Spectrometric method

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Test methods of caprolactam for industrial use - Part 4: Determination of volatile bases content - Titrimetric method after distillation

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Test methods of caprolactam for industrial use - Part 5: Determination of absorbance at a wavelength of 290nm

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Test methods of caprolactam for industrial use - Part 6: Determination of acidity or alkalinity

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Test methods of caprolactam for industrial use - Part 7: Determination of iron content

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Test methods of caprolactam for industrial use - Part 8: Determination of cyclohexanone oxime content

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Phosphorus pentasulfide for industrial use

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High-pressure sodium vapour lamps—Performance requirements

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