質(zhì)量標(biāo)準(zhǔn):項(xiàng)目Item 分析純 化學(xué)純
(AR) (CP)
含量(C8H6O4)Assay,% ≥ 99。5% 99.0
灼燒殘?jiān)ㄒ粤蛩猁}計(jì))Ignition residue,% ≤ 0.02 0.05
氯化合物(Cl)Chlorine compounds,% ≤ 0.002 0.01
硫化合物(以SO4計(jì))Sulfur compounds ≤ 0.02 0.005
鐵(Fe)Iron,% ≤ 0.0005 0.001
重金屬(以Pb計(jì))Heavy metals,% ≤ 0.001 0.005
ACS級(jí)
項(xiàng)目名稱Item ACS Grade
含量[(C6H4(COOH2)]Assay ≥99.5%
水不溶物Insoluble matter ≤0.05%
灼燒殘?jiān)黂esidue after ignition ≤0.02%
氯化物(Cl)Chloride(Cl) ≤0.001%
硝酸鹽(NO3)Nitrate ≤0.005%
硫酸鹽(SO4)Sulfate ≤0.005%
重金屬(以Pb計(jì))Heavy metals(as Pb) ≤0.001%
鐵(Fe)Iron(Fe) ≤0.001%
水分(H2O)Water ≤0.05%