CompoundsOrganic CompoundsHypophosphorous acid CAS 6303-21-5

SKU: WGP-6303-21-5

Hypophosphorous acid

CAS 6303-21-5


It is a monobasic acid forming the anion H2PO2 – in water. The sodium salt, and hence the acid, can be prepared by heating yellow phosphorus with sodium hydroxide solution. The free acid and its salts are powerful reducing agents.


Hypophosphorous acid CAS 6303-21-5 Product Information

Product Name:Hypophosphorous acid
Hypophosphorus acid:(Phosphinicacid);Hypophosphorusacid,50%w/waq.soln.;hypophosphorous;
CAS NO:6303-21-5
Molecular Weight:63.980501
Molecular Formula:HO2P
Boiling Point:108 °C (759.8513 mmHg)
Melting point:-25°C
Appearance:colorless liquid
Storage:no restrictions.

hypophosphorous acid synthesis/How to synthesize hypophosphorous acid/make hypophosphorous acid

Hypophosphorous acid may be prepared by various methods:
1. Boiling white phosphorus with calcium hydroxide:P4 + 4Ca(OH)2 + 8H2O → 4Ca(H2PO2)2 + 4H2.
The calcium salt is soluble in water. Treatment with sulfuric acid yields thehypophosphorous acid:(H2PO2)2Ca + H2SO4 → 2H3PO2 + CaSO4.
The product mixture is filtered to remove insoluble CaSO4. The aqueous solu-tion of hypophosphorous acid is concentrated under reduced pressure.Concentrated baryta water may be used instead of calcium hydroxide.2. By treating sodium hypophosphite, NaH2PO2with an ion-exchange resin.The sodium salt may be produced by boiling white phosphorus with a solutionof sodium hydroxide,
a reaction similar to (1) above.
PH3 + 2I2 + 2H2O → H3PO2 + 4HI,The above method may be considered safer than that involving heating whitephosphorus with an alkali.
Hypophosphorous acid must be stored below 50°C. It is sold commerciallyas an aqueous solution at various concentrations.Customized packaging on demand

hypophosphorous acid uses/What is hypophosphorous acid used for?

1. Hypophosphorous acid is used as reducing agent for electroless plating;
2. It can be used to prevent discoloration of phosphoric acid resin;
3. It is used as esterification catalyst, the refrigerant;
4. It is used to produce hypophosphite, sodium salts, manganese salts, iron salts are generally used as nourishing substances;
5. Hypophosphorous acid is used in medicine and as reducing agent, the determination of arsenic, tellurium and separation of tantalum, niobium and other reagents.
6. It is strong reducing agent, It can be used for the preparation of sodium hypophosphite, calcium phosphate and other hypophosphite.
7. It can be used for the plating bath. Pharmaceuticals. reducing agent. general reagents.
8. It is strong reducing agent, it can be used in making sodium hypophosphite, calcium phosphate and other hypophosphite.
9. This product is widely used as reducing agent, Ag, Cu, Ni, Hg and other metals are reduced to the corresponding metal, for the verification of As, Nb, Ta and other reagents, it can be used for the preparation of Na, K, Ca, Mn, Fe and other types of hypophosphite.

hypophosphoric acid reaction with water

HPA is usually supplied as a 50% aqueous solution and heating at low temperatures (up to about 90°C) prompts it to react with water to form phosphorous acid and hydrogen gas. Heating above 110°C causes hypophosphorous acid to undergo disproportionation to give phosphorous acid and phosphine.

hypophosphorous acid reduction mechanism/hypophosphorous acid is a good reducing agent

Hypophosphorous acid (HPA), or phosphinic acid, is a phosphorus oxyacid and a powerful reducing agent with molecular formula H3PO2. It is a colorless low-melting compound, which is soluble in water, dioxane and alcohols.Our factory and lab

hypophosphorous acid organic or inorganic

In organic chemistry, H3PO2 can be used for the reduction of arenediazonium salts, converting ArN+2 to Ar–H. When diazotized in a concentrated solution of hypophosphorous acid.

An amine substituent can be removed from arenes.Hypophosphorous acid (H3PO2) is a colorless low-melt- ing compound (m.p. 26.5 °C), which is a commercially avail- able inorganic acid, and is usually supplied as a 50% aque- ous solution.

hypophosphorous acid oxidation state

Hypophosphorous acid or phosphinic acid (H3PO2) is a monobasic acid having +1 oxidation state for phosphorus.

hypophosphorous acid formula/What is the chemical formula of the oxyacid hypophosphorous acid?


basicity of hypophosphorous acid

The formula of hypophosphorous acid is H3PO2. It contains one P-OH the basicity of hypophosphorous acid is 1.transportation

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