This standard is applicable to the determination of nonvolatile matter in naphthalene-containing fractions obtained from fractional distillation of high-temperature coal tar, refined naphthalene obtained from washing and rectification, and industrial naphthalene.
GB/T 6701-1986 history
2005GB/T 6701-2005 Method for the determination of the non-volatile of naphthalene
1986GB/T 6701-1986 Method for the determination of the non-volatile matter of naphthalene