3-Nitro-4-hydroxyphenylarsonic acid

  • 4-Hydroxy-3-nitrophenylarsonic acid
  • 4-Hydroxy-3-nitrobenzenearsonic acid
  • Roxarsone
  • 3-Nitro
  • NSC 2101
  • Ren-O-sal
Formula
C6H6AsNO6
Structure
Description
Pale yellow crystals or light tan powder.
Uses
Antiprotozoan agent (growth promoter) for poultry, antibacterial agent (growth promoter) for poultry, reagent for zirconium.

Registry Numbers and Inventories.
CAS
121-19-7
EC (EINECS/ELINCS)
204-453-7
R 23/25 50/53
S 20/21 28 45 60 61
RTECS
CY5250000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen
UN (DOT)
3280
Merck
12,8430
Beilstein/Gmelin
1976533
Beilstein Reference
4-16-00-01188
RCRA
D004
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C6H6AsNO6
Formula mass
263.04
Melting point, °C
260
Density
2.0314 g/cm3 (20 C)
Solubility in water
Very soluble
pKa/pKb
3.46 (pKa)

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Minimize dust generation and accumulation. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Stability
Stable under normal shipping and handling conditions.
Incompatibilities
Strong oxidizing agents, strong acids, strong bases.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, oxides of arsenic.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Extinguishing media: Use water spray to cool fire-exposed containers. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
Prolonged or repeated skin contact may cause irritation. May cause liver and kidney damage. May cause digestive tract disturbances.
   Ingestion
Poison by ingestion. Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
The toxicological properties of this substance have not been fully investigated. Toxic if inhaled.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Induce vomiting. Get medical aid immediately. Wash mouth out with water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
3280
Response guide
Hazard class
6.1
Packing Group
I; II; III