Product Identification

Product Name

Roxarsone

Synonyms

3-Nitro
4-Hydroxy-3-nitrobenzenearsonic acid
4-Hydroxy-3-nitrophenylarsonic acid
NSC 2101
Ren-O-sal
Roxarsone

CAS

121-19-7

Formula

C6H6AsNO6

Molecular Weight

263.04000000000002

EINECS

204-453-7

RTECS

CY5250000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Mutagen

Merck

12,8430

Beilstein/Gmelin

1976533

Beilstein Reference

4-16-00-01188

Physical and Chemical Properties

Appearance

Pale yellow crystals or light tan powder.

Solubility in water

Very soluble

Melting Point

260

Density

2.0314 g/cm3 (20 C)

pKa/pKb

3.46 (pKa)

Usage

Antiprotozoan agent (growth promoter) for poultry, antibacterial agent (growth promoter) for poultry, reagent for zirconium.

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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.

Ingestion

Poison by ingestion. Causes gastrointestinal irritation with nausea, vomiting and diarrhea.

EC Risk Phrase

R 23/25 50/53

EC Safety Phrase

S 20/21 28 45 60 61

UN (DOT)

3280

Exposure Controls/Personal Protection

Personal 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.

Exposure Effects

Prolonged or repeated skin contact may cause irritation. May cause liver and kidney damage. May cause digestive tract disturbances.

Fire Fighting Measures

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

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.

Stability and Reactivity

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.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

3280

Hazard Class

6.1

Packing Group

I; II; III