International Chemical Safety Cards

1,2-DIPHENYLHYDRAZINE ICSC: 0263
1,2-DIPHENYLHYDRAZINE
Hydrazobenzene
Diphenylhydrazine
N,N'-Bianiline
C12H12N2 / C6H5-NH-NH-C6H5
Molecular mass: 184.3
CAS # 122-66-7
RTECS # MW2625000
ICSC # 0263
EC # 007-021-00-4

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
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
  • INHALATION
  • Cough. Sore throat. See Notes.
    Local exhaust or breathing protection.
    Fresh air, rest. See Notes.
  • SKIN
  • See Notes.
    Protective gloves.
    Remove contaminated clothes. Rinse and then wash skin with water and soap.
  • EYES
  • See Notes.
    Safety spectacles, 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
  • See Notes.
    Do not eat, drink, or smoke during work. Wash hands before eating.
    Rest. Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Do NOT wash away into sewer. Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: P3 filter respirator for toxic particles).
    Separated from food and feedstuffs. Cool. Dry. Keep in the dark. Keep in a well-ventilated room. Keep under inert gas.
    Do not transport with food and feedstuffs.
    T symbol
    R: 45-22
    S: 53-45
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0263 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-DIPHENYLHYDRAZINE ICSC: 0263

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    PHYSICAL STATE; APPEARANCE:
    WHITE TO YELLOW CRYSTALS.

    PHYSICAL DANGERS:


    CHEMICAL DANGERS:
    The substance decomposes on heating or on burning producing toxic fumes including nitrogen oxides. Reacts with mineral acids forming benzidine (see ICSC # 0224).

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV not established.


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

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

    EFFECTS OF SHORT-TERM EXPOSURE:
    The substance irritates the respiratory tract.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    This substance is possibly carcinogenic to humans.
    PHYSICAL
    PROPERTIES
    Melting point: 125-131C
    Relative density (water = 1): 1.16
    Solubility in water, g/100 ml at 20C: <0.1
    Octanol/water partition coefficient as log Pow: 2.94
    ENVIRONMENTAL
    DATA

    N O T E S
    Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
    Transport Emergency Card: TEC (R)-61G12b
    ADDITIONAL INFORMATION


    ICSC: 0263 1,2-DIPHENYLHYDRAZINE
    © 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.