Safety Reference
Danger
H301Toxic if swallowed
H331Toxic if inhaled
H400Very toxic to aquatic life
H410
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
CAS 121-19-7
Roxarsone is an organoarsenic compound historically utilized in veterinary medicine as a feed additive to promote growth and control enteric infections in poultry and swine. It also serves as a laboratory reagent for zirconium and was formerly used in the manufacture of arsphenamines.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
The international HS code for Roxarsone (CAS 121-19-7) is 2931.90.
2931.90
2931 90 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
(4-hydroxy-3-nitrophenyl)arsonic acid
XMVJITFPVVRMHC-UHFFFAOYSA-N
C1=CC(=C(C=C1[As](=O)(O)O)[N+](=O)[O-])O