AS NO.7778-77-0
molecular Formula: KH 2PO4
Molecular weight: 136.09
Characteristics: colorless or white rhomboidal crystal, Soluble in water except for acid, Aqueous become acidic reaction, moisture has deliquescence.
Carried Standard: ZH-1999-08
Application: In medicine it used for acidification of urine, sake synthetic flavoring agent, agent of bacterial culture, brewing yeast culture agent.
Quality Standard
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item
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Index
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|
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first-class
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qualified product
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|
|
MKP (KH 2PO4)content(dry basis),% )
|
98.0
|
97.0
|
|
Moisture%(
|
3.0
|
3.0
|
|
Ph value
|
4.4-4.6
|
4.4-4.6
|
|
water insoluble matter%(
|
0.3
|
0.5
|
|
Chloride(CI-)%(
|
0.2
|
0.2
|
|
Iron(Fe)% (
|
0.003
|
0.003
|
|
arsenic(Fe)% (
|
0.005
|
0.005
|
|
heavy metal%(
|
0.005
|
0.005
|