International Chemical Safety Cards

HYDROGEN IODIDE

ICSC: 1326

Anhydrous hydriodic acid
HI
Molecular mass: 127.9

ICSC #    1326
CAS #     10034-85-2
RTECS # MW3760000
UN #        2197
EC #         053-002-00-9
October 19, 1999 Peer reviewed

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

STORAGE

PACKAGING & LABELLING

Ventilation. Personal protection: chemical protection suit including self-contained breathing apparatus.

Fireproof if in building.

C symbol
R: 35
S: 1/2-9-26-36/37/39-45
UN Hazard Class: 2.3
UN Subsidiary Risks: 8

SEE IMPORTANT INFORMATION ON BACK

ICSC: 1326

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

HYDROGEN IODIDE

ICSC: 1326

I

M

P

O

R

T

A

N

T

D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS GAS , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
The gas is heavier than air.

CHEMICAL DANGERS:
Reacts withstrong 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.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

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

ENVIRONMENTAL
DATA

N O T E S

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.

Transport Emergency Card: TEC (R)-20G2TC
NFPA Code: H3; F0; R0;

ADDITIONAL INFORMATION

ICSC: 1326	HYDROGEN IODIDE
(C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE:

Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.