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• Pharmaceutica
• Soil fumigation
• Other |
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| MolecularFormula
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CH3I |
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CAS No. 74-88-4 |
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| Molecular
Weight |
141.95 |
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| Typical
Properties |
| Appearance |
Colorless
transparent liquid, with sweet ether-like odor |
| Specific gravity |
d204
2.28 |
| Melting point |
-66.45°C |
| Boiling point |
42.5°C |
| Refractive index |
n21D
1.5293 |
| Solubility |
in water
1.4g/100 g (20°C)
Readily soluble in alcohol, ether, and carbon tetrachloride. |
| Reactivity |
Releases
iodide in light and turns brown
Decomposition temperature: 270°C |
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| Specifications |
| Item |
ISE Standard |
JIS K8919-1981 Special
Class |
| Fraction (41.5 ~ 43°C) |
95v/v% min. |
95v/v min. |
| Water content |
0.1% max. |
0.1% max. |
| Non-volatile constituents |
0.1% max. |
0.1% max. |
| Acidity |
To pass test |
To pass test |
| Assay |
98.0% min. |
98.0% min. |
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| Packing |
| 30 l Stainless
steel drum |
| Net weight:
40kg. Mixed with copper foil |
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| Applications |
| Medicines,
organic chemicals synthesis (methylation agent), microcopy
(utilization of refractive index), soil disinfectant. |
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| Hazards |
1) Fire and
explosion: Noncombustible, non-inflammable, and on-explosive
2) Gas generation: Methyl iodide fumes |
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| Toxicity |
LD50
oral-rat: 200 mg/kg or 50 mg/kg
TLV: 10 ppm air
Toxic, and cutaneously absorbed. When fumes are inhaled,
the lung liver, kidney, and central nervous system are
damaged, resulting in dizziness, sleepiness, nausea, diarrhea,
speech disorder, ataxia, muscle convulsion, etc.
Acute poisoning is caused at 100 ~ 500 ppm in air, and
death at 6000 ~ 8600 ppm. |
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| First
aid |
1) Rinse
eyes immediately with running water for over 15 minutes.
2) Wash skin with running water and soap.
3) Remove contaminated clothing immediately, and wash
contaminated skin areas thoroughly. |
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| Handling
& Storage |
1) Tightly
seal containers, and store in a well-ventilated, cool,
dark place.
2) Keep working area well ventilated, and measure gas
concentration at regular intervals. Wear polyurethane
gloves and impermeable garments. |
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| Spillage |
| Eliminate
all ignition sources in the neighborhood, absorb the spilled
liquid with paper towels or vermiculite, and place these
on a steel, glass or plastic pan to let the liquid evaporate.
Burn the paper towels or vermiculite and wash the ground
surface with soapy water. |
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