Hypophosphorous acid
Synonym(s):Hypophosphorous acid;Phosphinic acid
- CAS NO.:6303-21-5
- Empirical Formula: HO2P
- Molecular Weight: 63.980501
- MDL number: MFCD02183592
- EINECS: 228-601-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-04-16 18:29:06
What is Hypophosphorous acid?
Description
Hypophosphorous acid is a powerful reducing agent with a molecular formula of H3PO2. Inorganic chemists refer to the free acid by this name although its IUPAC name is dihydridohydroxidooxidophosphorus, or the acceptable name of phosphinic acid. It is a colorless low-melting compound, which is soluble in water, dioxane, and alcohols. The formula for hypophosphorous acid is generally written H3PO2, but a more descriptive presentation is HOP(O)H2 which highlights its monoprotic character. Salts derived from this acid are called phosphinates (hypophosphites).
The Uses of Hypophosphorous acid
Hypophosphorous acid is primarily used for electroless nickel plating. It is involved in the reduction of arenediazonium salts. It acts as an additive in Fischer esterification reactions. Also, it serves as a neutralizing agent, antioxidant, catalyst in polymerization and poly condensation, and wetting agent. Further, it is used in the formulation of pharmaceuticals, discoloration of polymers, water treatment and retrieval of precious or non-ferrous metals. In addition to this, it is used as bleaching agents for plastics, synthetic fibers, decolorizing agent and for color stabilization during the manufacture of chemicals and several plastics.
Properties of Hypophosphorous acid
Melting point: | -25 °C |
Boiling point: | 108 °C (759.8513 mmHg) |
Density | 1.206 g/mL at 20 °C(lit.) |
storage temp. | no restrictions. |
form | hygroscopic crystals or colorless oily liquid |
color | Colorless |
Water Solubility | SOLUBLE |
Safety information for Hypophosphorous acid
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 |
GHS Hazard Statements |
H290:Corrosive to Metals H314:Skin corrosion/irritation |
Precautionary Statement Codes |
P234:Keep only in original container. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Hypophosphorous acid
InChIKey | GQZXNSPRSGFJLY-UHFFFAOYSA-N |
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