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Methyl methanesulfonate(66-27-3)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
Methyl methanesulfonate

Synonyms
as-Dimethyl sulfite
as-Dimethyl sulphite
Methyl mesylate
Methyl methanesulfonic acid
Methylmethane sulfonate
Methylmethanesulphonate

CAS
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

Physical and Chemical Properties

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)

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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

Exposure Controls/Personal Protection

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.