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NIOSH

4-NITROBENZOIC ACID

ICSC: 1684

para-Nitrobenzoic acid
para-Carboxynitrobenzene
C7H5NO4 / HOOCC6H4NO2
Molecular mass: 167.1
ICSC # 1684 		CAS # 62-23-7
RTECS # DH5075000
April 10, 2008 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Foam. Dry powder. Carbon dioxide.
EXPLOSION Risk of explosion in contact with potassium hydroxide .


EXPOSURE
PREVENT DISPERSION OF DUST!

•INHALATION Cough.
Local exhaust.
Fresh air, rest.
•SKIN Redness.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
•EYES Redness.
Safety spectacles
Rinse with plenty of water (remove contact lenses if easily possible).
•INGESTION Nausea. Vomiting.

Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Personal protection: particulate filter adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers.
Separated from strong oxidants, bases and strong reducing agents .

Signal: Warning
Excl mark
Causes skin irritation
Causes eye irritation
May cause respiratory irritation
ICSC: 1684 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

4-NITROBENZOIC ACID

ICSC: 1684

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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 . The substance decomposes on heating and on burning producing toxic fumes including nitrogen oxides .

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by ingestion.

INHALATION RISK:
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes , the respiratory tract and the skin .

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Animal tests show that this substance possibly causes toxicity to human reproduction or development.

PHYSICAL
PROPERTIES

Boiling point (decomposes): 350°C
Melting point: 242°C
Density: 1.61
g/cm3
Solubility in water, g/100 ml at 25°C: 0.03
(poor)
Vapour pressure, Pa at 50°C: 1
Flashpoint: 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

ENVIRONMENTAL
DATA


N O T E S

ADDITIONAL INFORMATION



ICSC: 1684 4-NITROBENZOIC ACID
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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