Sodium Hypophosphite

Physicochemical properties

Colorless monoclinic crystal or pearly crystal or white crystalline powder.

Relative density 1.388, odorless, salty taste.

Soluble in water, ethanol, glycerol; slightly soluble in ammonia, ammonia water; insoluble in ether.

The aqueous solution is neutral, and the solubility in water at 100°C is 667g/100g water.Deliquescence easily.It is relatively stable when stored in a dry state, but rapidly decomposes when heated above 200°C, releasing toxic phosphine that can spontaneously combust.

In case of strong heat, it will be mixed with potassium chlorate or other oxidants.

Sodium hypophosphite is a strong reducing agent, which can reduce salts of gold, silver, mercury, nickel, chromium, cobalt, etc. to their metallic state.

Under normal pressure, heating and evaporation of sodium hypophosphite solution will occur, so evaporation should be carried out under reduced pressure.

Product Usage

Electroless plating agent, for large-scale equipment and small objects that cannot be coated by electroplating process, objects requiring high precision and complex concave-convex patterns, inner walls of deep holes, objects requiring high surface hardness and wear resistance; or plastics , ceramics, glass quartz and other non-metallic materials surface metallization, the use of this product can obtain dense, uniform nickel, chromium plating, and more solid than electroplating.Widely used in electronics, aviation, machinery, petroleum and other industries.

Fresh-keeping and bacteriostatic effect, fresh-keeping of fruits, vegetables and cut flowers; anti-corrosion and preservation of meat, poultry and fish; can also be used as food additives.

Preparation of various industrial preservatives and oil field scale inhibitors, food industry boiler water additives, recovery of various metals from various chemical plating wastewaters and removal of chlorides and cyanates.

Catalyst, stabilizer, prepare polyamide polymer polyamide, accelerate chemical reaction; can be used as stabilizer for chemical reaction, bleaching of mechanical pulp, stabilizer for peroxide.

Also used as antioxidant; anti-decolorization agent, dispersant, textile finishing and medicine and other industries.

Packaging, storage and transportation

Products for domestic sales are packed in plastic woven bags lined with polyethylene plastic bags, with a net weight of 40kg per bag; products for export are packed in iron drums lined with polyethylene plastic bags, with a net weight of 50kg per barrel.

It should be stored in a cool, ventilated, dry and clean warehouse.

Seal the package, pay attention to moisture and avoid contact with chlorates and other oxidizing agents.

Keep away from heat and fire.

It shall not be stored and transported together with toxic substances and polluting substances.

Protect from rain and scorching sun during transportation.

Be careful when loading and unloading to prevent damage to the package.

 In case of fire, water, sand and various fire extinguishers can be used to put out the fire.

First-aid

【Ingestion】Seek medical attention if any symptoms develop.

【Inhalation】Remove to fresh air.

【Touch】Rinse with plenty of water.

【Eyes】Rinse with plenty of water.

Handle

【Handle】This material may be hazardous when the container is emptied.Since product residues (vapor, liquid and/or solid) remain in the emptied container, all hazardous precautions must be observed in the data sheet.

Exposure Controls/Personal Protection

【Personal Protection】Wear protective gloves, chemical protective glasses and protective clothing.If using product in elevated tempratures - use respiratory protection.

【Respirator】Use NIOSH/MSHA approved respirator for proper exposure.

【Poison】Fire-fighting measures.

【Spontaneous combustion】230

【Fire Fighting】Firefighters must wear full protective clothing and self-contained breathing apparauts.Use water as extinguishing agent.

Stability and reactivity

【Incompatibility】Keep away from oxidizing agents, magnesium, aluminum, acid halides, acid anhydrides, phosphorus halides, thionyl chlorides and carbonates.

【Stability】Stable at normal temperature and pressure.

【Decomposition】Toxic gas.

【Combustion products】 Thermal decomposition products include phosphorous hydrogen, phosphate/phosphite, and phosphoroustrioxide.The phosphorus hydrogen (Phosphan) is self-igniting.