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Location:Home -> Industry Info -> HYPOPHOSPHOROUS ACID

HYPOPHOSPHOROUS ACID
Add Time:2008-10-27 YUFUNG GROUP

PRODUCT IDENTIFICATION

CAS NO. 6303-21-5

EINECS NO. 228-601-5
FORMULA H3PO2
MOL WT. 65.99
H.S. CODE 2811.19
TOXICITY Oral rat LD50: 90 ml/kg
SYNONYMS Phosphinic Acid; 次磷酸; Acide phosphinique (French); 
Phosphinsäure (German); ácido fosfínico (Spanish); 
DERIVATION 
CLASSIFICATION
 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE Clear to yellowish liquid
MELTING POINT -25 C (Pure H3PO2

BOILING POINT 108 C (Decomposes)
SPECIFIC GRAVITY 1.274
SOLUBILITY IN WATER Miscible
pH 
VAPOR DENSITY 
AUTOIGNITION
 

NFPA RATINGS
Health: 3 Flammability: 2 Reactivity: 2 
REFRACTIVE INDEX
 

FLASH POINT none

STABILITY Stable under ordinary conditions. 
APPLICATIONS

Hypophosphorous acid is the phosphorus oxo acid or hydroxy phosphine oxide, with monobasic character. The term phosphinic acid is for the descriptive presentation of derivatives or salts which hydrogen atoms bound to phosphorus are replaced by organic groups, called phosphinates. The term hypophosphite is also used for any salt, ester or anion derived from the name of hypophosphorous acid. Hypophosphorous acid is a low-melting point compound soluble in water. It is a powerful reducing agent. Hypophosphorous acid and its sodium salt (sodium hypophosphite) are used as powerful reducing agents in various field. (Hypophosphorous acid has an advantage of easy implementation in solution.) They are used in:
Pharmaceutic aid as antioxidant
Retrieval of non-ferrous
Ingredient of electroless plating solutions.
Water treatment agent
Meat preservative.
Prevent the discoloration of polymers
Production of chemicals

SALES SPECIFICATION
50% GRADE

APPEARANCE
Clear to yellowish liquid
H3PO2 50% min
H3PO3 1.0% max

SO4
0.01% max

Cl
0.05% max
Fe 0.005% max

TRANSPORTATION
PACKING 30kgs , 100kgs in drum

HAZARD CLASS 8 (Packing Group: II)
UN NO. 3264
OTHER INFORMATION
Hazard Symbols: C, Risk Phrases: 34, Safety Phrases: 26

 
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