Roxarsone

Roxarsone is an organoarsenic compound that has been used in poultry production as a feed additive to increase weight gain and improve feed efficiency, and as a coccidiostat. As of June 2011, it was approved for chicken feed in the United States, Canada, Australia, and 12 other countries. The drug was also approved in the United States and elsewhere for use in pigs.

Roxarsone
Names
Preferred IUPAC name
(4-Hydroxy-3-nitrophenyl)arsonic acid
Identifiers
3D model (JSmol)
1976533
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.004.049
EC Number
  • 204-453-7
1221211
KEGG
MeSH Roxarsone
RTECS number
  • CY5250000
UNII
UN number 3465
  • InChI=1S/C6H6AsNO6/c9-6-2-1-4(7(10,11)12)3-5(6)8(13)14/h1-3,9H,(H2,10,11,12) Y
    Key: XMVJITFPVVRMHC-UHFFFAOYSA-N Y
  • InChI=1/C6H6AsNO6/c9-6-2-1-4(7(10,11)12)3-5(6)8(13)14/h1-3,9H,(H2,10,11,12)
    Key: XMVJITFPVVRMHC-UHFFFAOYAF
  • Oc1ccc(cc1[N+](=O)[O-])[As](O)(O)=O
  • OC1=CC=C(C=C1[N+]([O-])=O)[As](O)(O)=O
Properties
C
6AsNH
6O
6
Molar mass 263.0365 g mol−1
Melting point > 300 °C (572 °F; 573 K)
Hazards
GHS labelling:
Danger
H301, H331, H410
P261, P273, P301+P310, P311, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

Its use in the United States was voluntarily ended by the manufacturers in June 2011 and has been illegal since 2013. Its use was immediately suspended in Malaysia. It was banned in Canada in August 2011. In Australia, its use in chicken feed was discontinued in 2012. Roxarsone has been banned in the European Union since 1999.

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