Phenylarsonic acid

Phenylarsonic acid
Stereo structural formula of phenylarsonic acid
Stereo structural formula of phenylarsonic acid
Ball-and-stick model of the phenylarsonic acid molecule
Names
Preferred IUPAC name
Phenylarsonic acid
Other names
Benzenearsonic acid
Identifiers
3D model (JSmol)
Abbreviations PAA
2935741
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.002.393 Edit this at Wikidata
EC Number
  • 202-631-9
131185
MeSH Benzenearsonic+acid
RTECS number
  • CY3150000
UNII
UN number 1557
  • InChI=1S/C6H7AsO3/c8-7(9,10)6-4-2-1-3-5-6/h1-5H,(H2,8,9,10) checkY
    Key: LVKZSFMYNWRPJX-UHFFFAOYSA-N checkY
  • O[As](O)(=O)C1=CC=CC=C1
Properties
C6H7AsO3
Molar mass 202.041 g·mol−1
Appearance Colourless solid
Density 1.76 g cm−3
Melting point 154 to 158 °C (309 to 316 °F; 427 to 431 K)
low
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Toxic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Phenylarsonic acid is the chemical compound with the formula C6H5AsO(OH)2, commonly abbreviated PhAsO3H2. This colourless solid is an organic derivative of arsenic acid, AsO(OH)3, where one OH group has been replaced by a phenyl group. The compound is a buffering agent and a precursor to other organoarsenic compounds, some of which are used in animal nutrition, e.g. 4-hydroxy-3-nitrobenzenearsonic acid.