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Molecular formula: Na3PO4·12H2O
Molecular weight: 380.12
CAS NO: 10101-89-0
Properties: colorless or white crystal. Specific gravity is 1.62(20℃). Soluble in water, insoluble n ethyl alcohol and carbon disulfide. Weathering in the dry air.
Uses: as analytical reagent, water softener and detergent for chemical, textile, printing and dyeing, papermaking, and other industries, boiler compound, metal rust remover, 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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For water treatment
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Assay(Na3PO4·12H2O)/%
|
≥98.0
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≥97.0
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≥98.0
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≥98.0
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Clarity test
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Qualified
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Qualified
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－
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－
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|
Free alkali
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≤1.5
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≤3.0
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－
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－
|
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Disodium salt
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≤0.5
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≤1.0
|
－
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－
|
|
Chloride(Cl)
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≤0.005
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≤0.005
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－
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≤0.3
|
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Sulfate(SO4)
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≤0.01
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≤0.03
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≤0.5
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≤0.5
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Nitrogen compound(N)
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≤0.002
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≤0.005
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－
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－
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Iron (Fe)
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≤0.0005
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≤0.002
|
－
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－
|
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Arsenic (As)
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≤0.0003
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≤0.001
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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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≤0.002
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≤0.002
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－
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Phosphorus pentoxide (P2O5)
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－
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－
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≤18.3
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－
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Methyl orange alkalinity
|
－
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－
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15.5~19
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16~19
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Water insoluble matter
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－
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－
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－
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≤0.1
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Packing: woven bag lined with plastic bag, kraft bag, or fiber drum, net weight is 25kg.
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