The Phosphonous acid, with the CAS registry number 14332-09-3, is also known as Dihydroxyphosphine. Its EINECS number is 238-276-1. This chemical's molecular formula is H₃O₂P and molecular weight is 66.00. What's more, its IUPAC name is phosphonous acid.

Physical properties of Phosphonous acid are: (1)#H bond acceptors: 2; (2)#H bond donors: 2; (3)#Freely Rotating Bonds: 2; (4)Polar Surface Area: 32.05 Å².

You can still convert the following datas into molecular structure:
(1)SMILES: OPO
(2)Std. InChI: InChI=1S/H3O2P/c1-3-2/h1-3H
(3)Std. InChIKey: XRBCRPZXSCBRTK-UHFFFAOYSA-N