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Detailed content Specification parameter Product packaging

Testing Item

Standard

Result

Assay (on dry basis)

White or almost white, crystalline   powder or small, colourless granule

conforms

Appearance

98.5% ~ 101.0%

100.0%

Identification

A: IR absorption; C: Reaction of nitrates

conforms

Appearance of solution

Clear, not more intense than Y7

conforms

PH

6.8 ~ 7.5

7.2

Loss on drying

≤0.5%

0.08%

Chloride

≤0.06%

<0.06%

Sulphated ash

≤0.1%

0.02%

Heavy metals

≤10 ppm

<10 ppm


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