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Molecular formula: NaH2PO4·2H2O
Molecular weight: 156.01
CAS NO: 13472-35-0
Properties: colorless rhombic crystal. Relative density is 2.040 and melting point is 60℃. Soluble in water and insoluble in alcohol.
Uses: as analytical reagent and buffer agent. It can be used in preparing bacteria culture medium, in food, fermentation, leather, boiler water, and other industries.
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(NaH2PO4·2H2O)/%
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≥99.0
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≥98.0
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≥98.0
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PH value (50g/L,25℃)
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4.2~4.6
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4.2~4.6
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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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≤0.01
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≤0.02
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≤0.05
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Chloride(Cl)
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≤0.005
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≤0.01
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≤0.014
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Sulfate(SO4)
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≤0.005
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≤0.01
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≤0.25
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Nitrate(NO3)
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≤0.001
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≤0.002
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－
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Ammonium (NH4)
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≤0.002
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－
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－
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Potassium (K)
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≤0.02
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≤0.1
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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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Arsenic (As)
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≤0.0002
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≤0.0005
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≤0.005
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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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Ammonia precipitate/%
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≤0.01
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≤0.02
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－
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Fluoride(F) /%
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－
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－
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≤0.005
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Packing: woven bag lined with plastic bag, kraft bag, or fiber drum, net weight is 25kg.
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