o-Nitrobenzoic acid

  • 2-Nitrobenzoic acid
  • o-Carboxynitrobenzene
Formula
C7H5NO4
Structure
Description
Yellowish white crystals with an intensely sweet taste.

Registry Numbers and Inventories.
CAS
552-16-9
EC (EINECS/ELINCS)
209-004-9
R 36/37/38 40
S 26 36/37/39
RTECS
DH5050000
RTECS class
Mutagen
Merck
12,6686
Beilstein/Gmelin
1910632
Beilstein Reference
4-09-00-01046
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H5NO4
Formula mass
167.12
Melting point, °C
146 - 148
Density
1.575 g/cm3 (20 C)
Solubility in water
Very soluble
pKa/pKb
2.19 (pKa)
Partition coefficient, pKow
1.18

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
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. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
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
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.
Stability
Stable under normal shipping and handling conditions. Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents; strong bases; reducing agents.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Combustion generates toxic fumes. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.

Health.
Poison_Class
3 (Strong toxins)
Exposure effects
May cause fetal effects.
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation. May be absorbed through the skin.
   Eyes
May cause eye irritation and possible burns.

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.
   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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Remove 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.
HS Code
2916 39 00