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IOXYNIL ICSC: 0900
Date of peer-review: October 1997

3,5-diiodo-4-hydroxybenzonitrile
4-Hydroxy-3,5-diiodobenzonitrile
4-Cyano-2,6-diiodophenol
CAS # 1689-83-4 C7H3I2NO
RTECS # DI4025000 Molecular mass: 370.9
UN # 2588
EC # 608-007-00-6
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible. Liquid formulations containing organic solvents may be flammable. 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
STRICT HYGIENE! AVOID EXPOSURE OF (PREGNANT) WOMEN! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Dizziness. Headache. Sweating. Vomiting. Weakness. Fever.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin MAY BE ABSORBED! Pain. Redness.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes Pain. Redness.
Safety goggles, or face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion (See Inhalation).
Do not eat, drink, or smoke during work. Wash hands before eating.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
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).
Do not transport with food and feedstuffs. Marine pollutant.
EU Classification
Symbol: T
R: 21-25-63
S: (1/2-)36/37-45
UN Classification
UN Hazard Class: 6.1
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61G41b NFPA Code: H2; F1; R0;
Provision to contain effluent from fire extinguishing. 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 2001

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IOXYNIL ICSC: 0900
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
ODOURLESS, COLOURLESS 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 including nitrogen oxides and iodine and cyanide compounds.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

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 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates slightly the eyes and the skin.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Animal tests show that this substance possibly causes malformations in human babies.
PHYSICAL PROPERTIES
Melting point: 212-213C
Solubility in water: none
Vapour pressure, Pa at 20C: <0.001
Octanol/water partition coefficient as log Pow: 3.51
ENVIRONMENTAL DATA
The substance is toxic to aquatic organisms. Avoid release to the environment in circumstances different to normal use.
NOTES
Carrier solvents used in commercial formulations may change physical and toxicological properties. Actril, Bentrol, Certol, Iotril, Toxynil are trade names.
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 2001