ICSC 0481 - 3,3'-DICHLOROBENZIDINE

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3,3'-DICHLOROBENZIDINE	ICSC: 0481 (May 2010)
3,3'-Dichlorobiphenyl-4,4'-ylenediamine 4,4'-Diamino-3,3'-dichlorobiphenyl

CAS #: 91-94-1

EC Number: 202-109-0

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use fine water spray, dry powder, carbon dioxide.

See EFFECTS OF LONG-TERM OR REPEATED EXPOSURE. PREVENT DISPERSION OF DUST! STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat.	Avoid inhalation of dust. Use local exhaust or breathing protection.	Fresh air, rest. Seek medical attention if you feel unwell.
Skin	MAY BE ABSORBED!	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Seek medical attention if you feel unwell.
Eyes		Wear face shield or eye protection in combination with breathing protection if powder.	Rinse with plenty of water (remove contact lenses if easily possible).
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria Suspected of causing genetic defects May cause cancer May cause respiratory irritation May cause damage to liver through prolonged or repeated exposure if swallowed Toxic to aquatic life with long lasting effects Transportation UN Classification
STORAGE
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Well closed. Store only in original container. Store in an area without drain or sewer access.
PACKAGING
Do not transport with food and feedstuffs.

3,3'-DICHLOROBENZIDINE

ICSC: 0481

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance GREY-TO-PURPLE CRYSTALS. Physical dangers No data. Chemical dangers Decomposes on burning. This produces toxic and corrosive fumes including nitrogen oxides and hydrogen chloride.	Formula: C₆H₃ClNH₂C₆H₃ClNH₂/C₁₂H₁₀Cl₂N₂ Molecular mass: 253.1 Boiling point: 368°C Melting point: 132-133°C Solubility in water: none Auto-ignition temperature: 350°C Octanol/water partition coefficient as log Pow: 3.51

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
GREY-TO-PURPLE CRYSTALS.

Physical dangers
No data.

Chemical dangers
Decomposes on burning. This produces toxic and corrosive fumes including nitrogen oxides and hydrogen chloride.

Formula: C₆H₃ClNH₂C₆H₃ClNH₂/C₁₂H₁₀Cl₂N₂
Molecular mass: 253.1
Boiling point: 368°C
Melting point: 132-133°C
Solubility in water: none
Auto-ignition temperature: 350°C
Octanol/water partition coefficient as log Pow: 3.51

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. Effects of short-term exposure The substance is irritating to the respiratory tract.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. Effects of long-term or repeated exposure Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver. This substance is probably carcinogenic to humans.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

Effects of short-term exposure
The substance is irritating to the respiratory tract.

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered.

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver. This substance is probably carcinogenic to humans.

OCCUPATIONAL EXPOSURE LIMITS
TLV: (skin); A3 (confirmed animal carcinogen with unknown relevance to humans). MAK: skin absorption (H); carcinogen category: 2

ENVIRONMENT
The substance is toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. It is strongly advised not to let the chemical enter into the environment.

NOTES
The substance is combustible but no flash point is available in literature. TLV Note: Exposure by all routes should be carefully controlled to levels as low as possible.

ADDITIONAL INFORMATION

EC Classification
Symbol: T, N; R: 45-21-43-50/53; S: 53-45-60-61; Note: E

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