Product Identification
【Product Name】Sodium hypophosphite
【Synonyms】Sodium phosphinate ；次磷酸钠
【CAS】7681-53-0
【Formula】NaO2P
【Molecular Weight】85.96
【EINECS】231-669-9
【RTECS】WB5950000
【RTECS Class】Other
【Merck】12,8775
【Beilstein/Gmelin】11548 (G)

Physical and Chemical Properties
【Appearance】White, crystalline solid. Odorless.
【Solubility in water】Soluble.
【Melting Point】100℃
【Density】1.81 g/cm3 (20℃)
【Usage】Pharmaceuticals, reducing agent in electrodeless nickel plating of plastics and metals, lab reagent, substitute for sodium nitrite in smoked meats.

First Aid Measures
【Ingestion】Seek medical attention if any symptoms develop.
【Inhalation】Remove to fresh air.
【Skin】Rinse abundantly with water.
【Eyes】Rinse abundantly with water.

Handling and Storage
【Storage】Keep containers closed when not in use. Store in a cool, dry place (protect from humidity, max storage temperature 25 deg C).
【Handling】Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed.

Hazards Identification
【Ingestion】Nausea, vomiting and diarrhea are possible if ingested.
【Inhalation】Cough, tachypnea, and wheezing are common after inhalation.
【Skin】Redness, swelling and pain may occur.
【Eyes】Irritation.

Exposure Controls/Personal Protection
【Personal Protection】Wear protective gloves, chemical ggles and protective clothing. If working with product at elevated temepratures - also use repsiratory protection.
【Respirators】Use NIOSH/MSHA approved respirator appropriate for exposure.
【Poison Class】4

Fire Fighting Measures
【Autoignition】230℃
【Fire Fighting】Firefighters should wear full protective clothing and use self contained breathing apparauts. Use water as extinguishing media.

Accidental Release Measures
【Small spills/leaks】Clean up personnel should wear full protective clothing - if material exposed to elevated temperatures also wear repsiratory protection. Collect spilled material into suitable labelled containers and hold for later disposal.

Stability and Reactivity
【Incompatibilities】Keep away from oxidizing agents, magnesium, aluminum, acid halides, acid anhydrides, phosphorus halides, thionyl chlorides and carbonates.
【Stability】Stable at normal temperatures and pressures.
【Decomposition】Toxic fumes.
【Combustion Products】Products of thermal decomposition include phosphorous hydrogen, phosphate/ phosphite, phosphoroustrioxide. Phosphorous hydrogen (Phosphan) is self igniting.