Items 检验项目 | Specification 检验标准 | Results 检验结果 | |
Appearance 外观 | White crystalline or powder,novisible impurities. | Qualified 合格 | |
succinic acid,ω/% 丁二酸 | ≥99.5 | 99.64 | |
Moisture,ω/% 水分 | ≤0.50 | 0.42 | |
Iron,ω/% 铁 | ≤0.002 | 0.0001 | |
Chloride,ω/% 氯化物(以 C1ˉ计) | ≤0.005 | <0.01 | |
Sulfate,ω/% 硫酸盐(以 SO42ˉ计) | ≤0.05 | <0.01 | |
residue on ignition,ω/% 灼烧残渣 | ≤0.025 | 0.002 | |
Melting point range/℃ 熔点范围 | 184-188 | 187 | |
ease oxide/(mL/g) 易氧化物 | ≤0.60 | 0.07 | |
Pb,ω/% 重金属铅含量(以 Pb 计) | ≤0.005 | <0.001 | |
Analytical conclusion 检验结论 | Test qualified 检验合格 |