International Chemical Safety Cards

HYDROGEN IODIDE ICSC: 1326
World Health Organization (WHO) International Labour Organization (ILO) United Nations Environmental Programme (UNEP) European Commission National Institute for Occupational Safety and Health (NIOSH)
Anhydrous hydriodic acid
HI
Molecular mass: 127.9
8 Corrosive placard 2 Poison Gas placard ICSC #    1326
CAS #     10034-85-2
RTECS # MX1510000
UN #        2197
EC #         053-002-00-9
May 04, 2010 Validated
Ju, 010 IPCS checked incl GHS
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: use appropriate extinguishing media.
EXPLOSION

In case of fire: keep cylinder cool by spraying with water.
EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
 •INHALATION Cough. Sore throat. Burning sensation behind the breastbone. Shortness of breath. Laboured breathing.
Ventilation, local exhaust, or breathing protection.
Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.
 •SKIN Redness. Pain. Serious skin burns. Blisters. ON CONTACT WITH LIQUID: FROSTBITE.
Protective gloves. Cold-insulating gloves. Protective clothing.
Rinse skin with plenty of water or shower for at least 15 minutes. ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer immediately for medical attention.
 •EYES Redness. Pain. Severe burns.
Face shield or eye protection in combination with breathing protection.
Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.
 •INGESTION
Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation.
Fireproof if in building. Separated from metals , oxidants . Keep in a well-ventilated room.

Note: 5
C symbol
R: 35
S: 1/2-9-26-36/37/39-45
UN Hazard Class: 2.3
UN Subsidiary Risks: 8
Signal: Danger
Cylinder-Corr
Contains gas under pressure; may explode if heated
Causes severe skin burns and eye damage
May cause respiratory irritation
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
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PHYSICAL STATE; APPEARANCE:
 COLOURLESS COMPRESSED LIQUEFIED GAS , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
 The gas is heavier than air.

CHEMICAL DANGERS:
 Reacts with oxidants causing fire hazard. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001). The solution in water is a strong acid, it reacts violently with bases and is corrosive.

OCCUPATIONAL EXPOSURE LIMITS:
 TLV not established.
MAK not established.


 ROUTES OF EXPOSURE:
 Serious local effects by all routes of exposure.

INHALATION RISK:
 On loss of containment, a harmful concentration of this gas in the air will be reached very quickly.

EFFECTS OF SHORT-TERM EXPOSURE:
 Rapid evaporation of the liquid may cause frostbite. The substance is corrosive to the eyes, the skin and the respiratory tract. Inhalation may cause severe swelling of the throat. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
PHYSICAL
PROPERTIES
Boiling point: -35.5°C
Melting point: -50.8°C
Solubility in water, g/100 ml at 20°C: 42.5
(good)
 Vapour pressure, kPa at 20°C: 733
Relative vapour density (air = 1): 4.4
ENVIRONMENTAL
DATA

N O T E S
Other UN number : 1787 Hydriodic acid, hazard class 8, packing group II-III. The CAS number 10034-85-2 applies for hydrogen iodide and hydriodic acid.
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.