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o-DIANISIDINE ICSC: 1582
Date of Peer Review: April 2005

C.I. Disperse Black 6
3,3-Dimethoxybenzidine
3,3-Dianisidine
3,3-Dimethoxy-4,4'-diaminobiphenyl
CAS # 119-90-4 C14H16N2O2
RTECS # DD0875000 Molecular mass: 244.3
UN # 2431
EC # 612-036-00-X
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. Dry powder. Carbon dioxide.
EXPLOSION


EXPOSURE See EFFECTS OF LONG-TERM OR REPEATED EXPOSURE.
AVOID ALL CONTACT!

Inhalation Cough.
Ventilation (not if powder), local exhaust, or breathing protection.
Fresh air, rest.
Skin
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness.
Face shield 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
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: P3 filter respirator for toxic particles. Chemical protection suit. Vacuum spilled material.
Do not transport with food and feedstuffs.
EU Classification
Symbol: T
R: 45-22
S: 53-45
Note: [E]
UN Classification
UN Hazard Class: 6.1
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61S2431 or 61GT1-III
NFPA Code: H-; F1; R0;
Separated from oxidants and 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-DIANISIDINE ICSC: 1582
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible.

CHEMICAL DANGERS:
The substance decomposes on burning producing toxic fumes including nitrogen oxides. Reacts with oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
MAK: Carcinogen category: 2; (DFG 2004).
TLV not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

INHALATION RISK:
A harmful concentration of airborne particles can be reached quickly on spraying or when dispersed, especially if powdered.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
This substance is probably carcinogenic to humans.
PHYSICAL PROPERTIES
Melting point: 137.5C
Solubility in water, g/100 ml at 25C: 0.006
Vapour pressure, Pa at C: negligible
Flash point: 206C c.c.
Octanol/water partition coefficient as log Pow: 1.81
ENVIRONMENTAL DATA

NOTES
Do NOT take working clothes home. Depending on the degree of exposure, periodic medical examination is suggested.
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