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Molecular formula: NH4H2PO4
Molecular weight: 115.02
Properties: colorless odorless crystal or white crystalline powder. Relative density is 1.803, melting point is 190℃. Soluble in water and insoluble in ethyl alcohol.
Uses: in preparing fermentation auxiliary. As leavening agent in food industry.
Standard:
| Specifications/item |
AR
|
CP
|
Food grade
|
Industrial high purity
|
|
Assay (NH4H2PO4) /%
|
≥99.0
|
≥98.5
|
97.0~102.0
|
Nitrogen (N) assay
11.8
|
|
PH value (50g/L,25℃)
|
4.0~4.5
|
4.0~4.5
|
4.0~4.5
|
4.0~4.5
|
|
Clarity test
|
Qualified
|
Qualified
|
－
|
－
|
|
Water insoluble matter/%
|
≤0.005
|
≤0.01
|
－
|
－
|
|
Chloride(Cl) /%
|
≤0.000 5
|
≤0.001
|
≤0.03
|
－
|
|
Sulfur compound(SO4) /%
|
≤0.005
|
≤0.01
|
－
|
－
|
|
Nitrate(NO3) /%
|
≤0.001
|
≤0.002
|
－
|
－
|
|
Sodium (Na) /%
|
≤0.005
|
≤0.01
|
－
|
－
|
|
Potassium (K) /%
|
≤0.005
|
≤0.01
|
－
|
－
|
|
Iron (Fe) /%
|
≤0.001
|
≤0.003
|
－
|
－
|
|
Arsenic (As) /%
|
≤0.000 5
|
≤0.002
|
≤0.000 4
|
－
|
|
Heavy metal (Pb) /%
|
≤0.000 5
|
≤0.001
|
≤0.002
|
－
|
|
Phosphorus pentoxide (P2O5) /%
|
－
|
－
|
－
|
≥46.0
|
|
Moisture/%
|
－
|
－
|
－
|
≤0.2
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Packing: Plastic woven bag lined with plastic bag, kraft bag, carton or fiber drum, net weight is 25kg.
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