This standard is applicable to the determination of distillation ranges of crude light pyridine obtained from high-temperature coking recovery, pure pyridine, α-methylpyridine, β-methylpyridine fractions and pyridine solvents obtained by fractionation.
YB/T 5073-1993 history
1994YB/T 5073-1993 Method of determination for distillation range of pyridine products