ICSC 1326 - HYDROGEN IODIDE

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

HYDROGEN IODIDE

ICSC: 1326
_{October 1999}

Anhydrous hydriodic acid

CAS No: 10034-85-2
RTECS No: MW3760000
UN No: 2197
EC No: 053-002-00-9

HI
Molecular mass: 127.9

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings: powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION

EXPOSURE		AVOID ALL CONTACT!	IN ALL CASES CONSULT A DOCTOR!
Inhalation	Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat. Symptoms may be delayed (see Notes).	Closed system and ventilation.	Fresh air, rest. Half-upright position. Refer for medical attention.
Skin	Redness. Skin burns. Pain. Blisters. (See Inhalation). ON CONTACT WITH LIQUID: FROSTBITE.	Cold-insulating gloves. Protective clothing.	ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.
Eyes	Redness. Pain. Severe deep burns.	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		Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Ventilation. Personal protection: chemical protection suit including self-contained breathing apparatus.	C Symbol R: 35 S: (1/2-)9-26-36/37/39-45 UN Hazard Class: 2.3 UN Subsidiary Risks: 8

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-20G2TC NFPA Code: H3; F0; R0	Fireproof if in building.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS GAS, WITH PUNGENT ODOUR.

Physical dangers
The gas is heavier than air.

Chemical dangers
Reacts with strong oxidants, magnesium, causing fire hazard. The solution in water is a strong acid, it reacts violently with bases and is corrosive.

Occupational exposure limits
TLV not established.

Routes of exposure
The substance can be absorbed into the body by inhalation.

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.

Effects of short-term exposure
The substance is corrosive to the eyes, the skin and the respiratory tract. Inhalation of this gas may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated. See Notes.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: -35.5°C Melting point: -51°C Solubility in water, g/100 ml at 20°C: 57 Vapour pressure, kPa at °C: 756 Relative vapour density (air = 1): 4.4

NOTES

Copper-nickel alloys and copper-tin alloys, as well as, stainless steel and nickel-chromium alloys, offer the best resistance to corrosion.
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.
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
Card has been partly updated in April 2005. See sections EU classification, 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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