CAS 10294-56-1
:Phosphorous acid
Description:
Phosphorous acid, also known as phosphonic acid, is a chemical compound with the formula H₃PO₃. It is a colorless, odorless liquid that is hygroscopic and soluble in water. This compound is characterized by its weak acidic properties, as it can donate protons, although it is not a true diprotic acid since it primarily exhibits one acidic hydrogen. Phosphorous acid is often encountered in its salt forms, known as phosphites, which are used in various applications, including agriculture as fungicides and in the production of certain chemicals. The compound can also act as a reducing agent due to the presence of phosphorus in a lower oxidation state compared to phosphoric acid. Its structure features a phosphorus atom bonded to three hydroxyl groups and one double-bonded oxygen, contributing to its reactivity and ability to form complexes with metals. Safety precautions should be taken when handling phosphorous acid, as it can cause irritation to the skin and eyes.
Formula:H3PO3
InChI:InChI=1S/H3O3P/c1-4(2)3/h1-3H
InChI key:InChIKey=OJMIONKXNSYLSR-UHFFFAOYSA-N
SMILES:P(O)(O)O
Synonyms:- Hydrogen Phosphonate
- Ortho-Phosphorous acid
- Orthophosphorous acid
- Orthophosphorus
- Phosphonic acid
- Phosphorus(+3) Trihydride Cation Trihydroxide
- Phosphorous acid
- Orthophosphorus acid
- Phosphorou acid
- Orthophosphorus acid ISO 9001：2015 REACH
- Phosphorous acid 50% aqueous solution
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