Phosphorus chemicals

  • Sodium Hypophosphite
Sodium Hypophosphite

Sodium Hypophosphite

  • CAS: 10039-56-2/7681-53-0
  • MF: NaH2PO2.H2O
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Sodium Hypophosphite is a crystalline monohydrate containing one water molecule, so its CAS number should be 10039-56-2 rather than 7681-53-0, which is a pure compound and difficult to produce. Sodium Hypophosphite has a phosphorus valency of +1, so it has strong reductibility, is one of the main raw materials in the surface treatment industry such as electroless nickel plating, copper plating, zinc plating, and so on. At the same time, it is widely used in polycarboxylic acid water reducer, non-halogen flame retardant, hypophosphate, pharmaceutical intermediates, water treatment agents, phosphate ester synthesis. Sodium Hypophosphite has the characteristics of high purity, good stability, good water solubility, high decomposition temperature, non-toxic and harmless, and it is a common chemical.


Basic information:

English name: Sodium Hypophosphite;Sodium hypophosphate;Sodium dihydrogen hypophosphite

CAS NO.: 10039-56-2/7681-53-0

Executive standard: HG/T3253-2000

Molecular formula: NaH2PO2.H2O

H.S : 28351000.00

Molecular weight: 105.99

Solubility: insoluble in propanol, insoluble in ethanol, easily soluble in water

Appearance: White crystal, easy to absorb moisture, non-powdery


Product Features:

1, High purity, effective content up to 102%, suitable for electroless nickel plating surface treatment in precision electronics industry.

2, Good water solubility, room temperature solubility of 150g /100ml.

3. It is a common chemical, convenient for storage and transportation, and does not belong to hazardous controlled chemicals.

4, Transparent crystal, no odor, VOC is 0.

5, Sodium phosphite, sulfate, chloride ions and other low content, in line with the food, feed industry on metal impurities control requirements.


Technical indicators:






















White Crystal


Usage :

1, It is the main raw material for the production of halogen-free flame retardants such as aluminum hypophosphate, aluminum diethyl hypophosphate, aluminum dialkylphosphite, hypophosphate, potassium hypophosphate, nickel hypophosphate and calcium hypophosphate. The quality of sodium hypophosphite has a great influence on the effect of aluminum diethylphosphinate flame retardant, which may be due to its impurities, heavy metals, etc. have resistance to non-halogen flame retardant systems.

2, Is the production of phosphate esters, phosphorus containing pharmaceutical intermediates, deoxyribose derivatives, organic acids and other reducing agents.

3, In the concrete polycarboxylic acid water reducer can replace mercaptopropionic acid, thioglycolic acid, suspended white block, etc., in the case of unchanged effect, Sodium Hypophosphite environmental protection, better ease of use.

4, Can be used to produce organic phosphine water treatment agent, later can be converted into phosphate insoluble inorganic salts.



Net weight 25kg composite kraft paper bag with polyethylene bag inside.


Sodium Hypophosphite has good stability after being dissolved in water, and can also be made into 10-60% aqueous solution to meet the needs of different industries. The PH value is neutral, and it can remain stable under weak acid and weak alkaline conditions, so it can be mixed with a variety of organic acids, dispersants, chelators, etc., without neutralizing reaction. Sodium Hypophosphite has strong antioxidant capacity, and also has a certain bactericidal effect, which is one of the green and environmentally friendly raw materials in the feed and food preservation industry.

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