Phosphorous Acid/PA

Phosphorous Acid/PA CAS NO 13598-36-2
Related Products
Monopotassium Phosphite
Product introductionMepiquat chloride (N, N-dimethylpiperidinium chloride), well known as PIX, is a potential systemic plant growth regulator. The effects of PIX on plant height, stem elongation, leaf...
Octadecylamine
Product introductionModified octadecylamine (ODA) based Langmuir-Blodgett (LB) films were investigated. These films may find uses as ion exchange systems. ODA may be used to functionalize carbon nanom...
Mepiquat Chloride
Product introductionMepiquat chloride (N, N-dimethylpiperidinium chloride), well known as PIX, is a potential systemic
Phosphorous acid is the compound described by the formula H3PO3. This acid is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula. Phosphorous acid is an intermediate in the preparation of other phosphorus compounds.
H3PO3 is more clearly described with the structural formula HPO(OH)2. In the solid state, HP(O)(OH)2 is tetrahedral with one shorter P=O bond of 148 pm and two longer P–O(H) bonds of 154 pm. This species exists in equilibrium with an extremely minor tautomer P(OH)3. IUPAC recommends that the latter be called phosphorous acid, whereas the dihydroxy form is called phosphonic acid. Only the reduced phosphorus compounds are spelled with an "ous" ending.
Other important oxyacids of phosphorus are phosphoric acid (H3PO4) and hypophosphorous acid (H3PO2). The reduced phosphorus acids are subject to similar tautomerism involving shifts of H between O and P.
Specification of Phosphorous Acid/PA
Product name Phosphorous acid
CAS No 13598-36-2
EINECS NO 237-066-7
Molecular Formula C3PO3
Molecular weight 81.9957
Melting point 73 ℃
Keyword Phosphorous acid
Packing 25kg/woven bag
Description White crystalline powder
Loss on Drying
Aassy(HPLC) ≧ 99.0%
origin China  
usage Agrochemicals
Other names Phosphonic acid
Brand name jinma
Lianyungang JM Bioscience Co., Ltd. is a technologically innovative company and mainly engaged in researching, developing, investing, manufacturing and supplying all kinds of agrochemicals, fine chemicals, as well as some pharmaceutical intermediates and food additives.