CHARACTERS

A YELLOW CRYSTALLINE POWDER

A YELOW CRYSTALLINE POWDER

FREELY SOLUBLE IN WATER ,SAPARINGLY SOLULE IN ALCHOL

FREELY SOLUBLE IN WATER ,SAPARINGLY SOLULE IN ALCHOL

PH

2.3-2.9

2.5

SPECIFIC OPTICAL ROTATION

-188°TO-200°

-190°

SPECIFIC ABSORBANCE

270 TO 290

279

LIGHT-ABSORBING IMPURITIES

430nm A≤0.50

0.28

490nm A≤0.20

0.04

RELATED SUBSTANCES

IMPURITY A,NOT MORE THAN 0.5%

0.4%

IMPURITY B,NOT MORE THAN 2.0%

0.7%

IMPURITY C,NOT MORE THAN 2.0%

1.1%

TOTAL IMPURITY OF D,E,F,NOT MORE THAN 0.1%

NO DETECTED

HEAVY METALS

≤50PPM

<50PPM

SULPHATED ASH

≤0.5%

0.03%

WATER

≤2.0%

0.3%

RESIDUAL METHANOL

≤3000PPM

2038PPM

ASSAY

95.0 TO 102.0%

96.5%

CONCLUSION

THIS ABOVE CERTIFICATE OF ANALYSIS COMPLIES WITH BP2004/EP5.0