1.0 2016-05-19 02:57:23 UTC 2026-08-26 00:26:08 UTC Phosphorous acid SmallMolecule Phosphorous acid (H3O3P) is an inorganic compound with an average molecular weight of 82.00 g/mol. Phosphorous acid belongs to the non-metal phosphites, a subclass of non-metal oxoanionic compounds within the inorganic compounds. It is categorized as a homogeneous non-metal compound. In industrial applications, the compound serves as an oxidizing agent. Phosphorous acid is found in or released from 21 recorded sources. Within the category of electrical and electronic equipment, it is associated with antennas, amplifiers, coils, contacts, and communication cables or conductors, among 12 other items. It is also found in building and construction materials, specifically in floors and ceilings. Additionally, the compound is present in food, food processing, and cookware, where it is utilized in the processing of meats and the preparation of vinegar. H3O3P 81.995 81.981980955 phosphorous acid phosphorous acid 10294-56-1 OP(O)O InChI=1S/H3O3P/c1-4(2)3/h1-3H OJMIONKXNSYLSR-UHFFFAOYSA-N Inorganic compounds Homogeneous non-metal compounds Non-metal oxoanionic compounds Non-metal phosphites Non-metal phosphites Non-metal phosphite phosphorus oxoacid Detected and Not Quantified logp -1.5 logp -1.3 ChemAxon pka_strongest_acidic 17.92 ChemAxon pka_strongest_basic -1 ChemAxon iupac phosphorous acid ChemAxon average_mass 81.995 ChemAxon mono_mass 81.981980955 ChemAxon smiles OP(O)O ChemAxon formula H3O3P ChemAxon inchi InChI=1S/H3O3P/c1-4(2)3/h1-3H ChemAxon inchikey OJMIONKXNSYLSR-UHFFFAOYSA-N ChemAxon polar_surface_area 60.69 ChemAxon refractivity 14.53 ChemAxon polarizability 5.17 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 3 ChemAxon donor_count 3 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon #<HealthEffect::ActiveRecord_Associations_CollectionProxy:0x00007f722649b9a8> 107909