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| TYPES OF HAZARD / EXPOSURE | ACUTE HAZARDS / SYMPTOMS | PREVENTION | FIRST AID / FIRE FIGHTING |
| FIRE |
Not combustible.
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In case of fire in the surroundings: use appropriate extinguishing media.
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| EXPLOSION |
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In case of fire: keep drums, etc., cool by spraying with water.
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| EXPOSURE |
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STRICT HYGIENE!
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| Inhalation |
Cough. Sore throat. Headache. Dizziness. Drowsiness. Weakness. Confusion. Diarrhoea. Nausea. Vomiting. Symptoms may be delayed (see Notes).
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest. Refer for medical attention.
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| Skin |
Redness. Pain. Blisters.
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Protective gloves. Protective clothing.
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Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
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| Eyes |
Redness. Pain.
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Safety goggles, or eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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| Ingestion |
(See Inhalation).
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Do not eat, drink, or smoke during work.
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Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give a slurry of activated charcoal in water to drink. Refer for medical attention.
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| SPILLAGE DISPOSAL | PACKAGING & LABELLING | |||||||
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Evacuate danger area! Consult an expert! Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Chemical protection suit including self-contained breathing apparatus.
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Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. EU Classification Symbol: T R: 21-23/25-37/38-40 S: (1/2-)-36/37-38-45 UN Classification UN Hazard Class: 6.1 UN Pack Group: I | |||||||
| EMERGENCY RESPONSE | STORAGE | |||||||
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Transport Emergency Card: TEC (R)-61GT1-I
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Separated from strong oxidants, food and feedstuffs. Well closed. Ventilation along the floor.
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| IMPORTANT DATA | |||
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PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR. TURNS BROWN ON EXPOSURE TO LIGHT AND MOISTURE. PHYSICAL DANGERS: The vapour is heavier than air and may accumulate in low ceiling spaces causing deficiency of oxygen. CHEMICAL DANGERS: The substance decomposes on heating above 270C° producing hydrogen iodide. Reacts violently with strong oxidants. Reacts violently with oxygen at 300°C causing explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV: 2 ppm as TWA; (skin); (ACGIH 2004). MAK: Carcinogen category: 2 (DFG 2003). |
ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour, by ingestion and through the skin. INHALATION RISK: A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes, the skin and the respiratory tract The substance may cause effects on the central nervous system. The effects may be delayed. Medical observation is indicated. | ||
| PHYSICAL PROPERTIES | |||
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Boiling point: 42.5°C Melting point: -66.5°C Relative density (water = 1): 2.3 Solubility in water, g/100 ml at 20°C: 1.4 Vapour pressure, kPa at 20°C: 50 Relative vapour density (air = 1): 4.9 |
Relative density of the vapour/air-mixture at 20°C (air = 1): 2.9 Octanol/water partition coefficient as log Pow: 1.51-1.69 | ||
| ENVIRONMENTAL DATA | |||
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| NOTES | |||
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The symptoms of central nervous system do not become manifest until days or weeks after exposure. Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
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| ADDITIONAL INFORMATION | |||
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| © IPCS, CEC 1999 | |||
See Also:
Toxicological Abbreviations
Methyl iodide (PIM 341F, French)
Methyl Iodide (IARC Summary & Evaluation, Volume 15, 1977)
Methyl Iodide (IARC Summary & Evaluation, Volume 41, 1986)
Methyl Iodide (IARC Summary & Evaluation, Volume 71, 1999)