分析项目

ITEM OF ANALYSIS

指标

STANDARD

性状Appearance

白色至类白色粉末

White to off-white powder

溶解度

Solubility

四氢呋喃中易溶，甲醇、二氯甲烷或乙腈中略溶，甲苯中微溶，水中几乎不溶

鉴别

Identification

应与对照品主峰保留时间一致

Should be accordence with reference

残留溶剂 Solvent residue

四氢呋喃THF≤720ppm

甲苯Methylbenzene≤890ppm

甲醇Methanol≤3000ppm

二氯甲烷Dichloromethane≤600ppm

乙酸乙酯Ethyl acetate ≤5000ppm

重金属Heavy metals

≤20ppm

水分Water

≤1.5%

单一杂质Single impurity

≤0.2%

总杂质Total impurities

≤2.0%

炽灼残渣Residue on Ignition

≤0.2%

纯度 Purity

≥99.5％

含量Assay

97.0%～103.0%

结论Conclusion

符合企业标准Conforms to Enterprise Standard