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NIOSH

o-TOLIDINE

ICSC: 0960

3,3'-Dimethyl-(1,1'-biphenyl)-4,4'-diamine
Bianisidine
3,3'-Dimethylbenzidine
4,4'-Bi-o-toluidine
C14H16N2
Molecular mass: 212.3
ICSC # 0960 		CAS # 119-93-7
RTECS # DD1225000
UN # 2811
EC # 612-041-00-7
March 24, 1998 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.
Powder, water spray, foam, carbon dioxide.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
•INHALATION
Closed system and ventilation.
Fresh air, rest. Refer for medical attention.
•SKIN MAY BE ABSORBED!
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
•EYES
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. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Chemical protection suit including self-contained breathing apparatus.
Separated from strong oxidants, food and feedstuffs. Keep in the dark. Well closed.
Do not transport with food and feedstuffs.
Note: E
T symbol
N symbol
R: 45-22-51/53
S: 53-45-61
UN Hazard Class: 6.1
UN Packing Group: III
ICSC: 0960 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.

o-TOLIDINE

ICSC: 0960

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS OR RED TO BROWN FLAKES.

PHYSICAL DANGERS:


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

OCCUPATIONAL EXPOSURE LIMITS:
TLV: A3 (skin) (ACGIH 1997).
OSHA PEL: See Appendix C
NIOSH REL: Ca C 0.02 mg/m3 60-minute skin See Appendix A See Appendix C
NIOSH IDLH: Ca N.D. See: IDLH INDEX


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
This substance is probably carcinogenic to humans.

PHYSICAL
PROPERTIES

Boiling point: 200°C
Melting point: 131-132°C
Density: 1.234 g/cm3
Solubility in water, g/100 ml at 23-27°C: 0.13
Flash point: 244°C
Auto ignition temperature: 526°C
Octanol/water partition coefficient as log Pow: 2.34

ENVIRONMENTAL
DATA


N O T E S

Do NOT take working clothes home.
Transport Emergency Card: TEC (R)-61G12c

ADDITIONAL INFORMATION



ICSC: 0960 o-TOLIDINE
(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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