Factory Supply Hypophosphorous acid liquid CAS 6303-21-5 Raw Materials

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Uses and synthesis of Hypophosphorous acid liquid

Hypophosphorous acid Raw Materials, also known as "hypophosphorous acid", colorless oily or deliquescent crystals, is an important product of fine chemicals.Hypophosphorous acid liquid is mainly used as a reducing agent for chemical plating, to prevent the discoloration of phosphoric acid resin, and also used as a catalyst for esterification reaction, refrigeration, especially for the production of high purity sodium hypophosphite. Hypophosphorous acid liquid is mainly used as a reducing agent for chemical plating, to prevent the discoloration of phosphoric acid resin, and can also be used as a catalyst for esterification reaction, refrigerant, especially for the production of high purity sodium hypophosphite.Hypophosphorous acid CAS 6303-21-5 has a variety of methods for the preparation of which the common methods of preparation in the industry are the ion-exchange resin and electrodialysis method.

Colorless oily or deliquescent crystal. Melting point: 26.5℃. Relative density (specific gravity): 1.439 (solid, 19 ℃).Hypophosphorous acid CAS 6303-21-5 is easily soluble in water, ethanol and ether, and with water, ethanol, acetone can be mixed in any proportion.Hypophosphorous acid liquid is easily deliquesced to slurry liquid in the air, and the aqueous solution is acidic.

Applications / Functions of Hypophosphorous acid liquid

1. Hypophosphorous acid Raw Materials is a strong reducing agent, which is used to make hypophosphite such as sodium hypophosphite and calcium hypophosphite.
2. Hypophosphorous acid liquid is used in electroplating bath. Pharmaceuticals. Reducing agent. General purpose reagent.
3. Hypophosphorous acid CAS 6303-21-5 is widely used as a reducing agent, can be Ag, Cu, Ni, Hg and other metals into the corresponding metal, used as a test As, Nb, Ta and other reagents, but also can be used for the preparation of Na, K, Ca, Mn, Fe and other types of hypophosphates

(1)Used as antioxidant and color-reducing agent of alkyd resin. (2) Used as reducing agent. (3) To make hypophosphates, such as sodium hypophosphite, calcium hypophosphite, manganese hypophosphite, iron hypophosphite and so on.

Physicochemical Property of Hypophosphorous acid liquid

Hypophosphorous acid CAS 6303-21-5 is a reducing agent. Strong monoacid. The aqueous solution is acidic and can be gradually oxidized in air at room temperature. It will cause combustion when contacted with H-porous agent. Burns by intense reaction with oxidizing agent. By high heat decomposition of highly toxic phosphine gas, or even explosion. Hypophosphorous acid liquid is often added to cool drinks because it is not absorbed. So the danger is small, but especially concentrated hypophosphorous acid can harm the stomach and intestines. The solid acid is disproportionately decomposed to PH3 and H3PO4 when heated to 130-140°C. It is a fairly strong monoprotic acid (K=9×10-2).

Colorless oily liquid or easily deliquescent crystals. Hypophosphorous acid Raw Materials is soluble in hot water, ethanol, ether. Soluble in cold water.

production methodprocess of Hypophosphorous acid liquid

Ion Exchange Resin MethodApproximately 70g of cation exchange resin moistened with water is loaded into a glass tube and circulated with 5mol/L hydrochloric acid for about 15min, and after sufficient water washing, an aqueous sodium hypophosphite solution with high purity (15g/60mlH2O) is flowed from it, and the column of the resin is first used for 50ml, and then rinsed with 25rnl distilled water. The effluent acid and washings were combined and concentrated by evaporation on a water bath. The concentrated acid was dehydrated in a high vacuum, dryer with P205, cooled and crystallized, filtered and recrystallized to produce Hypophosphorous acid Raw Materials.

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