性    状

Appearance

 在N,N-二甲基甲酰胺中溶解，在水和二氯甲烷中不溶。

In the N, N - dimethyl formamide dissolved, insoluble in water and methylene chloride.

符合规定

Conforms

鉴   别

Identification

A、红外光谱应与对照光谱一Infrared spectrum should be consistent with the reference spectra

符合规定

Conforms

B、应显硫酸盐的鉴别反应Should show the identification of sulfate reaction

符合规定

Conforms

水    分

Water

≤5.0%

3.65%

残留溶剂

Residual solvent

                  三乙胺≤0.032%

未检出N.D.

二氯甲烷Dichloromethane≤0.06%

0.001%

乙醇Ethyl alcohol≤0.5%

0.06%

乙腈Acetonitrile≤0.041%

0.005%.

有关物质

Related substances

任意杂质Any impurity ≤0.2%

0.08%

总杂质Total impurities≤0.5%

0.37%

炽灼残渣

Residue on ignition

≤0.1%

0.04%

重金属

Heavy metal

不得过百万分之十≤10ppm

<10ppm

含   量

Assay

99.0%-101.0%（On anhydrous basis以干品计）

99.56%