Food Grade 98-103%
Monosodium phosphate(Anhydrous, Monohyrate, Dihydrate)
Molecular Formula:NaH2PO4; NaH2PO4·H2O; NaH2PO4·2 H2O
Molecular Weight:Anhydrous: 120.01; Monohydrate: 138.01; Dihydrate: 156.01
CAS NO:Anhydrous: 7558-80-7; Monohydrate: 10049-21-7; Dihydrate: 13472-3
Properties
white powder, and melting point is at 190°C.NaH2PO4.2H2O is colorless crystal, relative density at 1.915, melting point at 57.4°C. All easily soluble in water, but not in ethanol solution
Specification
Test item |
Specification |
Reagent grade |
Pharmaceutical grade |
Appearance |
Conform |
Conform |
Assay /% |
≥99.0 |
≥98.0 |
Clarify degrees test |
Conform |
Conform |
Water insoluble/% |
≤0.01 |
≤0.02 |
Chloride (Cl)/% |
≤0.005 |
≤0.01 |
Sulfate (SO4)/% |
≤0.005 |
≤0.01 |
Nitrate (NO3)/% |
≤0.005 |
≤0.002 |
Potassium (K) /% |
≤0.02 |
≤0.1 |
Ferric (Fe)/% |
≤0.001 |
≤0.005 |
Arsenic (As) /% |
≤0.0002 |
≤0.0005 |
Heavy metal (Pb)/% |
≤0.001 |
≤0.005 |
Ammonia sediment /% |
≤0.01 |
≤0.02 |
Index |
Industrial grade |
Content %≥ |
98.0 |
Phosphorus pentoxide (P2O5)%≥ |
58.0 |
PH value(1% water solution ) |
4.2-4.8 |
Water-insoluble %≤ |
0.1 |
Application
Used for water treatment to boiler, also as buffering agent, dyeing flux, for tanning and electroplating. For food additive it is mainly used as buffering agent, emulsification agent, nourishment, etc
Storage and Transport
It should be stored in a ventilated and dry warehouse instead of in the open air, kept away from water, moisture and sunlight during transport, handled with care, so as to avoid damage to plastic bags. Furthermore, it should be stored separately from poisonous substance
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