Hypophosphorous acid7

Hypophosphorous acid

HYPOPHOSPHOROUSACID,30%(W/V)SOLUTION;HYPOPHOSPHOROUSACID,50%(W/V)SOLUTION;Hypophosphorus acid: (Phosphinic acid);Hypophosphorus acid, 50% w/w aq. soln.;hypophosphorous;hypophosphorousacid(corrosiveliquid,acidic,inorganic,n.o.s.);Hypophosphorousacid,50%w/waq.soln.;HYPOPHOSPHOROUS ACID SOLUTION 50% AQUEOUS

6303-21-5

HO2P

GQZXNSPRSGFJLY-UHFFFAOYSA-N

63.980501

66.00

228-601-5

TSCA listed

DTXSID70162386

Colorless

28111990

Coating Additive

Colorless deliquescent crystals or oily liquid; sour odor; density 1.493 g/cm3;melts at 26.5°C; boils at 130°C; very soluble in water, alcohol and ether; den-sity of a 50% aqueous solution is 1.13 g/mL.

1.206 g/mL at 20 °C(lit.)

-25 °C

108 °C (759.8513 mmHg)

SOLUBLE

<17 mmHg ( 20 °C)

It is non-combustible. But when contacts with the hole H agent, it will cause fire. When meets oxidizing agent, violent reaction and combustion can proceed. When it is heated to high, it can decompose into highly toxic phosphine gas, or even explode. It is corrosive. Hypophosphorous acid is often added into soft drinks, and because it is not absorbed. So the risk is small, but particularly strong hypophosphite hurt gastrointestinal. Accidentally it splashes into the eyes or contacts skin, plenty of water is used to washed. Production operators should wear protective clothing and other protective clothing. Production equipment should be sealed, workshop should be ventilated well.

pKa1= 1.00(25℃)

pK1 1.1.

Deliquescent. Water soluble.

HYPOPHOSPHOROUS ACID decomposes when heated into phosphoric acid and spontaneously flammable phosphine. Is oxidized by sulfuric acid with release of sulfur dioxide and sulfur. Reacts explosively with mercury(II) oxide [Mellor, 1940, Vol. 4, 778]. Reacts violently with mercury(II) nitrate [Mellor, 1940, Vol. 4, 993]. Neutralizes bases in exothermic reactions.

no restrictions.