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Molecular formula: KH2PO4
Molecular weight: 136.09
CAS NO: 7778-77-0
Properties: colorless crystal or white crystalline powder. Relative density is 2.338 and melting point is 252.6℃. Soluble in water and insoluble in alcohol.
Uses: as analytical reagent, yeast culture agent, PH regulator, and etc.
Standard: The maximum content of impurities is in percentage content
| Specifications/item |
Analytically pure-AR
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Chemically pure-CP
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High purity
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Assay(KH2PO4) /%
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≥99.5
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≥99.0
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≥98.0
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PH value (50g/L solution,25℃)
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4.2~4.5
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4.2~4.5
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4.2-4.6
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Clarity test
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Qualified
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Qualified
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－
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Water insoluble matter
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≤0.002
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≤0.005
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≤0.2
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Drying loss
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≤0.2
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≤0.3
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—
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Chloride(Cl)
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≤0.001
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≤0.005
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≤0.3
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Sulfate(SO4)
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≤0.003
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≤0.005
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≤0.5
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Total nitrogen(N)
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≤0.001
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≤0.002
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－
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Arsenic (As)
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≤0.000 5
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≤0.002
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≤0.000 3
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Sodium (Na)
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≤0.02
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≤0.05
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－
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Iron (Fe)
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≤0.001
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≤0.005
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－
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Heavy metal (Pb)
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≤0.001
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≤0.005
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≤0.002
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Fluoride(F)
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－
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－
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≤0.001
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Packing: woven bag lined with plastic bag, kraft bag, or fiber drum, net weight is 25kg.
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