ICSC 0167 - IODINE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

IODINE

ICSC: 0167
_{April 2004}

Jod
Iode
Iodio
Yodo

CAS No: 7553-56-2
RTECS No: NN1575000
EC No: 053-001-00-3

I₂
Molecular mass: 253.8

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Not combustible but enhances combustion of other substances. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.	NO contact with flammable substances.	In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION

EXPOSURE		STRICT HYGIENE!
Inhalation	Cough. Wheezing. Laboured breathing. Symptoms may be delayed (see Notes).	Ventilation (not if powder), local exhaust, or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness. Pain.	Protective gloves. Protective clothing.	First rinse with plenty of water, then remove contaminated clothes and rinse again.
Eyes	Causes watering of the eyes. Redness. Pain.	Face shield 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	Abdominal pain. Diarrhoea. Nausea. Vomiting.	Do not eat, drink, or smoke during work.	Rinse mouth. Give plenty of water to drink. 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. Do NOT absorb in saw-dust or other combustible absorbents. Do NOT let this chemical enter the environment. Personal protection: filter respirator for inorganic gases, vapours and halogens.	Xn Symbol N Symbol R: 20/21-50 S: (2-)23-25-61

EMERGENCY RESPONSE	SAFE STORAGE
	Separated from incompatible materials. See Chemical Dangers. Well closed. Ventilation along the floor.

IMPORTANT DATA

Physical State; Appearance
BLUISH BLACK OR DARK PURPLE CRYSTALS, WITH PUNGENT ODOUR.

Physical dangers
Iodine readily sublimes.

Chemical dangers
Upon heating, toxic fumes are formed. The substance is a strong oxidant and reacts with combustible and reducing materials. Reacts violently with metal powders, antimony, ammonia, acetaldehyde, acetylene causing fire and explosion hazard.

Occupational exposure limits
TLV: 0.1 ppm; (Ceiling value); (ACGIH 2004).
MAK: IIb (not established but data is available); (DFG 2005).

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion.

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.

Effects of short-term exposure
Lachrymation. The substance is severely irritating to the eyes and the respiratory tract, and is irritating to the skin. Inhalation of the vapour may cause asthma-like reactions (RADS). Inhalation of the vapour may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated.

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization in rare cases. Repeated or prolonged inhalation exposure may cause asthma-like syndrome (RADS). The substance may have effects on the thyroid.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: 184°C Melting point: 114°C Relative density (water = 1): 4.9 Solubility in water, g/100 ml at 20°C: 0.03 Vapour pressure, kPa at 25°C: 0.04 Relative vapour density (air = 1): 8.8 Relative density of the vapour/air-mixture at 20°C (air = 1): 1 Octanol/water partition coefficient as log Pow: 2.49	This substance may be hazardous in the environment; special attention should be given to fish.

NOTES

The occupational exposure limit value should not be exceeded during any part of the working exposure.
Rinse contaminated clothes (fire hazard) with plenty of water.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Card has been partly updated in October 2005. See section Emergency Response.

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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