IPCS INCHEM Home
4-NITROBENZOIC ACIDICSC: 1684
para-Nitrobenzoic acid
para-Carboxynitrobenzene
April 2008
CAS #: 62-23-7
EC Number: 200-526-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Risk of explosion on contact with potassium hydroxide.  NO open flames.    Use foam, dry powder, carbon dioxide.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough.  Use local exhaust.  Fresh air, rest. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety spectacles.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion Nausea. Vomiting.    Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. 

According to UN GHS Criteria

excl mark;warn
WARNING
Causes skin irritation
Causes eye irritation
May cause respiratory irritation 

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants, bases and strong reducing agents. 
PACKAGING
 
4-NITROBENZOIC ACID ICSC: 1684
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE-TO-YELLOW CRYSTALS. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc. 

Chemical dangers
Reacts with bases, reducing agents and strong oxidants strong oxidants. Decomposes on heating and on burning. This produces toxic fumes including nitrogen oxides nitrogen oxides. 

Formula: C7H5NO4 / HOOCC6H4NO2
Molecular mass: 167.1
Decomposes at 350°C
Melting point: 242°C
Density: 1.61 g/cm³
Solubility in water, g/100ml at 25°C: 0.03 (poor)
Vapour pressure, Pa at 50°C: 1
Flash point: 201°C c.c.
Auto-ignition temperature: 300°C
Explosive limits, vol% in air: 1.8-?
Octanol/water partition coefficient as log Pow: 1.89  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by ingestion. 

Effects of short-term exposure
The substance is substance irritating to the eyes, respiratory tract and skin. 

Inhalation risk
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
Animal tests show that this substance possibly causes toxicity to human reproduction or development. 


OCCUPATIONAL EXPOSURE LIMITS
MAK: (inhalable fraction): 4 mg/m3; peak limitation category: I(2); carcinogen category: 3B; pregnancy risk group: C 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.
    See Also:
       Toxicological Abbreviations