2-Nitrophenylhydrazine

  • 1-Hydrazino-2-nitrobenzene
  • (2-Nitrophenyl)hydrazine
  • 2-Hydrazino-1-nitrobenzene
  • o-(Hydrazino)nitrobenzene
Formula
C6H7N3O2
Structure
Description
Orange to light brown powder.

Registry Numbers and Inventories.
CAS
3034-19-3
EC (EINECS/ELINCS)
221-222-6
R 5 11 20/21/22
S 15 22 36/37
RTECS
MV8210000
RTECS class
Mutagen
UN (DOT)
2926
Beilstein/Gmelin
512797
Beilstein Reference
4-15-00-00304
Japan ENCS (MITI)
Listed

Properties.
Formula
C6H7N3O2
Formula mass
153.16
Melting point, °C
194 - 195
Solubility in water
Slightly soluble
pKa/pKb
10.39 (pKb)
Partition coefficient, pKow
1.39

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Keep container closed to prevent drying out. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Material is heat, shock and/or friction sensitive. Use care in handling and storage. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Avoid contact with skin and eyes. Avoid ingestion and inhalation. Use with adequate ventilation.
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
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.
Small spills/leaks
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Wet area to prevent drying out. Provide ventilation.
Stability
Stable under normal shipping and handling conditions. However may violently decompose above 150C.
Incompatibilities
Oxidizing agents, strong bases.
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. Exposure to heat may promote violent decomposition. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. This material poses an explosion hazard when dry. Flammable solid. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Flammable solid.
Hazards
Heating may cause an explosion.
Health
2
 
Flammability
0
 
 
Reactivity
2
 

Health.
Exposure effects
Effects may be delayed.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. Exposure may cause anemia and other blood abnormalities.
   Inhalation
May cause cyanosis, characterized by bluish-colored skin. Causes respiratory tract irritation. Can produce delayed pulmonary edema.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation. May cause chemical conjunctivitis.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2926
Response guide