... printing dye ItemGB1902-2005 versionBP98 versionChina pharmacopoeia 2000 versionContent(base on C7H5NaO2 dry basis),% ≥99.099.0-100.599.0Drying loss ... the stipulationCchloride (base on Cl), ≤500PPm200PPm/Chloride(base on Cl), ≤/300PPm/Heavy metal(base on Pb), ≤10PPm10PPm10PPmAs(base on As), ≤2PPm/5PPmSulfate (base on SO4), ≤1000PPm ...