1.性状

Description

黄色结晶性粉末

Yellow crystalline powder

符合规定

Conform with

2.鉴定

Identification

A.红外 (IR)

符合规定

Conform with

符合规定

Conform with

 B.紫外(UV)

符合规定

Conform with

符合规定

Conform with

3.干燥失重

Loss on drying

≤0.5%

0.04%

4.炽灼残渣

Residue on ignition

≤0.1%

0.03%

5.重金属

Heavy metals

≤0.002%

﹤0.002%

6.维A酸

Tretinoin acid

≤1.0%

0.1%

7.有机挥发物质

Organic volatile Impurities

符合规定

Conform with

符合规定

Conform with

8.含量（按折干计算）

Assay (on the dried basis)

98%-102%

99.50%