White Powder NaH2PO4 Monosodium Dihydrogen Phosphate
7558-80-7 White Powder NaH2PO4 Buffering agent Emulsifier Ph regulator monosodium phosphat
Properties
Anhydrous products are white powder, and melting point is at 190 ℃. Dihydrate products is colorless crystal, relative density at 1.915 g/cm3, melting point at 57.4℃. It is soluble in water, not soluble in organic solution.
Neutralization method of soda ash: add extracted phosphoric acid into neutralization reactor, slowly add soda ash solution under stirring for neutralization reaction to generate sodium dihydrogen phosphate, which is filtered, evaporated and concentrated, cooled to 60-70 ℃ and crystallized, and then centrifugally separated to obtain dihydrate sodium dihydrogen phosphate. The anhydrous sodium dihydrogen phosphate was prepared by air flow drying.
Neutralization method of disodium hydrogen phosphate: dissolve disodium hydrogen phosphate dodecahydrate with water at the ratio of 3:2, remove the insoluble matter after filtration, add the filtrate into the neutralizer, slowly add phosphoric acid under stirring for neutralization reaction, control the pH value between 4.2 and 4.6, evaporate and concentrate the reaction solution until the crystal film is formed, cool and crystallize, and centrifugally separate to obtain sodium dihydrogen phosphate dihydrate. Then anhydrous sodium dihydrogen phosphate was prepared by drying at 100 ℃. The mother liquor can be returned to dissolve disodium hydrogen phosphate.
Technical Specifications
| Specification | Unit | Guaranteed | Test Result |
| Main contents NaH2PO4 | % | ≥98.0 | 99.2 |
| PH | 4.1-4.7 | 4.3 | |
| Heavy Metal (as Pb) | mg/kg | ≤10 | 5 |
| As | mg/kg | ≤3 | 1.2 |
| F | mg/kg | ≤50 | 8 |
| Pb | mg/kg | ≤4 | 2 |
| Water insoluble substances | % | ≤0.2 | 0.03 |
| Loss on drying | % | ≤2.0 | 0.3 |
Application
Monosodium phosphate is used in the food industry as an emulsifying agent, buffer and nutrient. Examples include: buffer in foodstuffs, ingredient in emulsifying salts for processed cheese, as component of other mix phosphates for processed meat products.
Packaging
Plastic knit bag or kraft bag, net weight 25kg.
Besides, we can pack the goods according to the requirement of the client.
COPMANY INFORMATION
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