Yellowish glistening leaflets or plates or tan crystals. Weak odor. Sublimes without decomposition.
Chemical intermediate for dyes: eg, basic yellow 2, basic orange 14, solvent yellow 34, chemical intermediate for its hydrochloride salt, reagent for lead.
Registry Numbers and Inventories.
EC Index Number
S 53 45
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
85 - 88
Boiling point, °C
Vapor pressure, mmHg
3E-6 (25 C)
Vapor density (air=1)
1.14 g/cm3 (20 C)
Solubility in water
Partition coefficient, pKow
Heat of vaporization
Hazards and Protection.
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
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.
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stable under normal temperatures and pressures.
Acids - acid chlorides - acid anhydrides - oxidizing agents.
Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.
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. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
This chemical is combustible.
Contact with metals may evolve flammable hydrogen gas.
Fire may produce irritating, corrosive and/or toxic gases.
OSHA: Possible Select carcinogen
May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis, rapid heart rate, unconsciousness and possible death. Animal inhalation studies have reported the development of tumors. Effects may be delayed. Laboratory experiments have resulted in mutagenic effects.
Overexposure may cause methemoglobinemia. Causes digestive tract irritation.
Causes respiratory tract irritation.
Causes skin irritation.
Causes eye irritation.
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.
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
I; II; III
USCG CHRIS Code
2921 59 90