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HomeProduct name listBARIUM HYPOPHOSPHITE

BARIUM HYPOPHOSPHITE

  • Empirical Formula: BaH4O4P2
  • Molecular Weight: 267.3
  • MDL number: MFCD00799189
BARIUM HYPOPHOSPHITE Structural

What is BARIUM HYPOPHOSPHITE?

Description

Barium hypophosphite has the formula, Ba(H2PO2)2, and the molecular weight of 267.30388 g/mol. This salt can be prepared by the aqueous reaction of the carbonate or oxide with H3PO2:
BaO + 2H3PO2 ? Ba(H2PO2)2
The salt is slightly soluble in water (3.62 g/100 ml at 20°C) so that the solution must be evaporated to obtain crystals. This procedure forms barium hypophosphite monohydrate, Ba(H2PO2)2·H2O, whose CAS number is 14871-79-5. Its molecular weight is 285.320 g/mol. It occurs as monoclinic plates with a density of 2.94 g/cm3. It is soluble in water but insoluble in alcohol. Therefore, the addition of alcohol during evaporation serves to hasten the crystallization process from aqueous solution. Heating to about 110°C causes the loss of the water of hydration to form the anhydrate. The anhydrate is soluble in water at about 35 g/100 ml at 20°C but only 30 g/100 ml at 100°C.

Chemical properties

White, crystalline powder; odorless. Soluble in water; insoluble in alcohol.

The Uses of BARIUM HYPOPHOSPHITE

The major usage of barium hypophosphite has been as a source of hypophosphorous acid because the addition of H3PO4 to a solution allows the separation of the very insoluble BaSO4. Although this salt is mentioned in a few patents concerning metal surface finishing, electroplating, chemical intermediates and as a source of hypophosphite anions, it is the calcium salt that is preferred since it is lower in cost and easier to use.

The Uses of BARIUM HYPOPHOSPHITE

Nickel plating.

Safety information for BARIUM HYPOPHOSPHITE

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