Sodium hypophosphite

Formula
H2NaO2P
Structure
Description
White, crystalline solid. Odorless.
Uses
Pharmaceuticals, reducing agent in electrodeless nickel plating of plastics and metals, lab reagent, substitute for sodium nitrite in smoked meats.

Registry Numbers and Inventories.
CAS
7681-53-0
EC (EINECS/ELINCS)
231-669-9
RTECS
WB5950000
RTECS class
Other
Merck
12,8775
Beilstein/Gmelin
11548 (G)
Swiss Giftliste 1
G-9422
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
H2NaO2P
Formula mass
87.97
Melting point, °C
100
Density
1.81 g/cm3 (20 C)
Solubility in water
Soluble.

Hazards and Protection.
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.
Protection
Wear protective gloves, chemical goggles and protective clothing. If working with product at elevated temepratures - also use repsiratory protection.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure.
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
Stable at normal temperatures and pressures.
Incompatibilities
Keep away from oxidizing agents, magnesium, aluminum, acid halides, acid anhydrides, phosphorus halides, thionyl chlorides and carbonates.
Decomposition
Toxic fumes.

Fire.
Autoignition, °C
230
Fire fighting
Firefighters should wear full protective clothing and use self contained breathing apparauts. Use water as extinguishing media.
Combustion products
Products of thermal decomposition include phosphorous hydrogen, phosphate/ phosphite, phosphoroustrioxide. Phosphorous hydrogen (Phosphan) is self igniting.

Health.
Poison_Class
4
Exposure effects
   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.

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

Transport.