ITEM

Unit

Quality Standards

Description

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White or almost white, crystalline powder, colourless crystals or granules. Odorless, has a strongly acid taste. Very soluble in water, freely soluble in ethanol.

Identification

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Pass Test

Appearance of solution

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Pass Test

Assay

％

99.5～100.5

Moisture

％

≤0.2

Readily        Carbonisable Substances

A @470nm

----

≤0.52

T @470nm

%

≥30

Sulphate

PPM

≤150

Oxalate

PPM

≤100

Calcium

PPM

≤75

Iron

PPM

≤5

Sulphated Ash

％

≤0.05

Lead

PPM

≤0.5

As

PPM

≤1

Mercury

PPM

≤1

Aluminum

PPM

≤0.2

Heavy Metals (as Pb)

PPM

≤5

Bacteria Endotoxin

IU/mg

＜0.5

Volatile Organic Impurities

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Pass Test