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NIOSH

1,2-DICHLORO-4-NITROBENZENE

ICSC: 0254

3,4-Dichloronitrobenzene
3,4-Dichloro-1-nitrobenzene
1-Nitro-3,4-dichlorobenzene
C6H3Cl2NO2
Molecular mass: 192.0
ICSC # 0254 		CAS # 99-54-7
RTECS # CZ5250000
UN # 1578
April 10, 2008 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 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 Cough.
Ventilation (not if powder).
Fresh air, rest.
•SKIN
Protective gloves.
Rinse and then wash skin with water and soap.
•EYES Redness.
Safety spectacles
Rinse with plenty of water (remove contact lenses if easily possible).
•INGESTION
Do not eat, drink, or smoke during work.
Rinse mouth.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Personal protection: particulate filter adapted to the airborne concentration of the substance. Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Do NOT let this chemical enter the environment.
Separated from strong oxidants, strong bases. Separated from food and feedstuffs . Provision to contain effluent from fire extinguishing.
Do not transport with food and feedstuffs.
UN Hazard Class: 6.1
UN Packing Group: II
Signal: Warning
Excl mark
Harmful if swallowed
Toxic to aquatic life
ICSC: 0254 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.

1,2-DICHLORO-4-NITROBENZENE

ICSC: 0254

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D

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PHYSICAL STATE; APPEARANCE:
COLOURLESS TO TAN NEEDLE-LIKE CRYSTALS.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating and 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 2007).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by ingestion. (2008) to delete (very weak metHb-forming potential and lack of supportive evidence)

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 255°C
Melting point: 39-41°C
Density: 1.56 at 15°C
g/cm3
Solubility in water:
none
Vapour pressure, Pa at 25°C: 2
Relative vapour density (air = 1): 6.6
Flash point: 124°C
Auto-ignition temperature: 420°C
Octanol/water partition coefficient as log Pow: 3.12

ENVIRONMENTAL
DATA

The substance is toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. It is strongly advised that this substance does not enter the environment. select after lengthy discussion about log Pow and related card ICSC 1618

N O T E S

Health effects of exposure to the substance have not been investigated adequately.
Transport Emergency Card: TEC (R)-61S1578

ADDITIONAL INFORMATION



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