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iso-PHTHALONITRILE ICSC: 1583
Date of Peer Review: April 2005

1,3-Benzenedicarbonitrile
Isophthalodinitrile
m-Dicyanobenzene
CAS # 626-17-5 C8H4N2
RTECS # CZ1900000 Molecular mass: 128.14
UN # 3276
EC #
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.
In case of fire: keep cylinder cool by spraying with water.
EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough.
Avoid inhalation of dust.
Fresh air, rest.
Skin

Rinse and then wash skin with water and soap.
Eyes Redness.
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Diarrhoea.
Do not eat, drink, or smoke during work. Wash hands before eating.
Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: P1 filter respirator for inert particles. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Do not transport with food and feedstuffs.
EU Classification
UN Classification
UN Hazard Class: 6.1
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-GT1-III
Separated from strong oxidants, food and feedstuffs.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK
iso-PHTHALONITRILE ICSC: 1583
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE CRYSTALLINE POWDER, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
Reacts with strong oxidants. The substance decomposes on heating producing toxic gases including hydrogen cyanide. On combustion, forms nitrogen oxides.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 mg/m as TWA; (ACGIH 2004).
MAK not established.
INHALATION RISK:
Evaporation at 20C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes.

PHYSICAL PROPERTIES
Sublimation > 162C
Density: 1.3 g/cm
Solubility in water, g/100 ml at 20C: 0.07
Vapour pressure, Pa : 1.33
Relative vapour density (air = 1): 4.42
Flash point: >150C
Octanol/water partition coefficient as log Pow: 0.39
ENVIRONMENTAL DATA

NOTES
Health effects of exposure to the substance have not been investigated adequately.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor 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
IPCS, CEC 1999