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Methyl methanesulfonate

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[Flash Point]

104
[Fire Fighting]

Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher.
[Fire Potential]

This chemical is combustible.
[Ingestion]

Do NOT induce vomiting. Allow the victim to rinse his mouth and then to drink 2-4 cupfuls of water, and seek medical advice.
[Inhalation]

Remove from exposure to fresh air immediately.
[Skin]

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
[Eyes]

First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
[Storage]

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
[Handling]

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
[Ingestion]

See inhalation.
[Inhalation]

Symptoms of exposure to this compound may include irritation of the eyes, skin, mucous membranes, nose and respiratory tract. It can cause dermatitis and nausea. Large doses ingested over nearly a year produced gastrointestinal and hepatic toxic effects.
[Skin]

See inhalation.
[Eyes]

See inhalation
[Hazards]

Contact with metals may evolve flammable hydrogen gas.
[UN (DOT)]

2922
[Personal Protection]

If Tyvek-type disposable protective clothing is not worn during handling of this chemical, wear disposable Tyvek-type sleeves taped to your gloves.
[Respirators]

Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
[Appearance]

Colorless to amber liquid.
[Solubility in water]

Very soluble
[Melting Point]

20
[Boiling Point]

203
[Vapor Pressure]

0.42 (25 C)
[Density]

1.3206 g/cm3 (0 C)
[Partition Coefficient]

-.57
[Heat Of Vaporization]

42.0 kJ/mol
[Usage]

Research chemical.
[Refractive Index]

1.41248 (16.2 C)
[Product Name]

Methyl methanesulfonate
[Synonyms]

as-Dimethyl sulfite
as-Dimethyl sulphite
Methyl mesylate
Methyl methanesulfonic acid
Methylmethane sulfonate
Methylmethanesulphonate
[CAS]

"CASEN_66-27-3.htm">66-27-3
[Formula]

C2H6O3S
[Molecular Weight]

110.12
[EINECS]

200-625-0
[RTECS]

PB2625000
[RTECS Class]

Agricultural Chemical and Pesticide; Tumorigen; Drug; Mutagen; Reproductive Effector
[Merck]

12,6170
[Beilstein/Gmelin]

1098586
[Beilstein Reference]

4-04-00-00011
[Small spills/leaks]

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.
[Stability]

Stable under normal temperatures and pressures.
[Incompatibilities]

Strong oxidizing agents - strong acids - strong bases.
[Decomposition]

Carbon monoxide, oxides of sulfur, carbon dioxide.
[Combustion Products]

Fire may produce irritating, corrosive and/or toxic gases.
[UN Number]

2922
[Hazard Class]

8
[Packing Group]

I; II; III