ICSC 0254 - 1,2-DICHLORO-4-NITROBENZENE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

1,2-DICHLORO-4-NITROBENZENE

ICSC: 0254
_{October 1995}

3,4-Dichloronitrobenzene
DCNB

CAS No: 99-54-7
RTECS No: CZ5250000
UN No: 1578

C₆H₃Cl₂NO₂
Molecular mass: 192.0

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	Finely dispersed particles form explosive mixtures in air.	Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE		PREVENT DISPERSION OF DUST!
Inhalation		Local exhaust or breathing protection.	Fresh air, rest.
Skin		Protective gloves.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain.	Safety goggles.	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.	Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!).

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Do NOT let this chemical enter the environment. (Extra personal protection: A/P3 filter respirator for organic vapour and toxic particles).	UN classification UN Hazard Class: 6.1 UN Pack Group: II	Do not transport with food and feedstuffs.

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-775 and 776 (molten)	Separated from strong oxidants, strong bases, food and feedstuffs. Well closed. Ventilation along the floor.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS TO TAN NEEDLE-LIKE CRYSTALS.

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air.

Chemical dangers
The substance decomposes on burning producing toxic fumes of nitrogen oxides, hydrogen chloride (see ICSC 0163). Reacts violently with oxidants and strong bases.

Occupational exposure limits
TLV not established.
MAK: skin absorption (H); Carcinogen category: 3B (DFG 2005).

Routes of exposure
The substance can be absorbed into the body by inhalation.

Effects of short-term exposure
The substance is irritating to the eyes and the skin. The substance may cause effects on the blood.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: 255°C Melting point: 39-41°C Relative density (water = 1): 1.45 at 75°C Solubility in water: none Relative vapour density (air = 1): 6.6 Flash point: 124°C Octanol/water partition coefficient as log Pow: 3.12	The substance may cause long-term effects in the aquatic environment.

NOTES

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006

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Updated by AS. Approved by GS. Last update: 29.01.2008