Sudan II

  • 1-(2,4-Dimethylphenylazo)-2-naphthol
  • Solvent Orange 7
  • C.I. 12140
  • Calco Oil Scarlet BL
  • Somalia Orange A
  • Red No. 5
Formula
C18H16N2O
Structure
Description
Red crystals or powder.
Uses
Sudan ii is reportedly used for coloring oils, waxes, hydrocarbon solvents for polishes, candles and polystyrene resins. In japan it is used to color petroleum products, plastics, shoe polish, cosmetics and drugs applied externally (except on mucous membrane).

Registry Numbers and Inventories.
CAS
3118-97-6
EC (EINECS/ELINCS)
221-490-4
RTECS
QL5850000
RTECS class
Tumorigen; Mutagen
Beilstein/Gmelin
960353
Beilstein Reference
4-16-00-00072
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C18H16N2O
Formula mass
276.36
Melting point, °C
156-158
Solubility in water
Insoluble
pKa/pKb
13.52 (pKa)

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. 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
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Combustion products
When heated to decomposition it emits toxic fumes of nitrogen oxide(s).

Health.
Exposure effects
Harmful if swallowd, absorbed through skin or inhaled. Danger of cumulative effects. Cancer suspect agent.
   Ingestion
The toxicological properties of this substance have not been fully investigated.
   Inhalation
The toxicological properties of this substance have not been fully investigated. Inhalation of dust may cause respiratory tract irritation.
   Skin
May cause skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.