International Chemical Safety Cards

1,2-DICHLORO-4-NITROBENZENE ICSC: 0254
1,2-DICHLORO-4-NITROBENZENE
3,4-Dichloronitrobenzene
DCNB
C6H3Cl2NO2
Molecular mass: 192.0
CAS # 99-54-7
RTECS # CZ5250000
ICSC # 0254
UN # 1578

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 STORAGE 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).
    Separated from strong oxidants, strong bases, food and feedstuffs. Well closed. Ventilation along the floor.
    Do not transport with food and feedstuffs.
    UN Hazard Class: 6.1
    UN Packing Group: II
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0254 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

    International Chemical Safety Cards

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

    I

    M

    P

    O

    R

    T

    A

    N

    T



    D

    A

    T

    A

    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 and hydrogen chloride (see ICSC # 0163). Reacts violently with oxidants and strong bases.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV not established.


    ROUTES OF EXPOSURE:
    The substance can be absorbed into the body by inhalation.

    INHALATION RISK:


    EFFECTS OF SHORT-TERM EXPOSURE:
    The substance irritates the eyes and the skin. The substance may cause effects on the blood.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    PHYSICAL
    PROPERTIES
    Boiling point: 255C
    Melting point: 39-41C
    Relative density (water = 1): 1.45 at 75C
    Solubility in water: none
    Relative vapour density (air = 1): 6.6
    Flash point: 124C
    Octanol/water partition coefficient as log Pow: 3.12
    ENVIRONMENTAL
    DATA
    The substance may cause long-term effects in the aquatic environment.
    N O T E S
    Transport Emergency Card: TEC (R)-775 and 776 (molten)
    ADDITIONAL INFORMATION


    ICSC: 0254 1,2-DICHLORO-4-NITROBENZENE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither the CEC or 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. 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.