Items

Specification

Appearance

White or almost white

crystalline powder

White or almost white

crystalline powde

Assay ,%

99.0 ~ 100.5

99.60

Identification

Positive reaction

Postive

Color of solution

0.03 (420nm) Max

0.02

pH Value

2.1~2.6

2.18

Heavy metals

10ppm max

8ppm

Copper

5ppm max

3ppm

Arsenic

3ppm max

1pmm

Lead

2ppm max

1ppm

Mercury

1ppm max

confirm

Iron

2ppm Max

1ppm

Oxalic acid ,%

0.2max

0.09

Loss on drying,%

0.4 max

0.2

Sulphated ash(Residue on ignaiton)

0.1% max

0.06

Specific Rotation

+20.5 ^o ~ 21.5 ^o

+21 ^o

Organic volatile impurity

Pass

Pass

It is hereby stated that the above information is ture & accurate in accordance with FCCIV and E300