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o-PHENYLENEDIAMINE ICSC: 1441
Date of Peer Review: October 2002

o-Diaminobenzene
1,2-Benzenediamine
2-Aminoaniline
1,2-Phenylenediamine
CAS # 95-54-5 C6H8N2 / C6H4 (NH2)2
RTECS # SS7875000 Molecular mass: 108.16
UN # 1673
EC # 612-145-00-2
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.
Water spray, powder.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE
STRICT HYGIENE!

Inhalation Blue lips or finger nails. Blue skin. Confusion. Convulsions. Dizziness. Headache. Nausea. Unconsciousness.
Local exhaust or breathing protection.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin Redness.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain.
Safety goggles, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion (See Inhalation).
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: P3 filter respirator for toxic particles.)
Do not transport with food and feedstuffs.
EU Classification
Symbol: T, N
R: 20/21-25-36-40-43-50/53-68
S: (1/2-)-28-36/37-45-60-61
Note: [C]
UN Classification
UN Hazard Class: 6.1
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
NFPA Code: H; F1; R0;
Transport Emergency Card: TEC (R)-61S1673-S
Separated from food and feedstuffs. Well closed.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK


o-PHENYLENEDIAMINE ICSC: 1441
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
BROWN TO YELLOW CRYSTALS. TURNS DARK ON EXPOSURE TO LIGHT.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
The substance decomposeson burning producing toxic fumes including nitrogen oxides.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.1 mg/m; A3; (ACGIH 2002).
MAK: Carcinogen category: 3B; Sh sensitization; (DFG 2002).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and by ingestion.

INHALATION RISK:
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20C; on spraying or dispersing, however, much faster.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes and is mildly irritating to the skin and the respiratory tract. The substance may cause effects on the blood, resulting in the formation of methaemoglobin. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the blood, resulting in anaemia. This substance is possibly carcinogenic to humans.
PHYSICAL PROPERTIES
Boiling point: 256-258C
Melting point: 103-104C
Solubility in water, g/100 ml at 35C: 0.4
Vapour pressure, kPa at 20C: 0.0013
Relative vapour density (air = 1): 3.73
Flash point: 156C c.c.
Explosive limits, vol% in air: 1.5-?
Octanol/water partition coefficient as log Pow: 0.15 (calculated)
ENVIRONMENTAL DATA
The substance is very toxic to aquatic organisms. Do not to let this chemical enter the environment.
NOTES
Depending on the degree of exposure, periodic medical examination is suggested. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Also consult ICSC 0805 p-Phenylenediamine and ICSC 1302 m-Phenylenediamine.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999
See Also:
        P-phenylenediamine (ICSC)