ICSC 1583 - iso-PHTHALONITRILE

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iso-PHTHALONITRILE

ICSC: 1583
_{April 2005}

1,3-Benzenedicarbonitrile
Isophthalodinitrile
m-Dicyanobenzene

CAS No: 626-17-5
RTECS No: CZ1900000
UN No: 3276

C₈H₄N₂
Molecular mass: 128.14

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.	UN Hazard Class: 6.1 UN Pack Group: III	Do not transport with food and feedstuffs.

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-GT1-III	Separated from strong oxidants, food and feedstuffs.

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/m³ as TWA; (ACGIH 2004).
MAK not established.

Inhalation risk
Evaporation at 20°C 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	ENVIRONMENTAL DATA
Sublimation > 162°C Density: 1.3 g/cm³ Solubility in water, g/100 ml at 20°C: 0.07 Vapour pressure, Pa : 1.33 Relative vapour density (air = 1): 4.42 Flash point: >150°C Octanol/water partition coefficient as log Pow: 0.39

NOTES

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

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

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