General Information
Version
6
Revision date
2025-12-19
Product name
Methyl methanesulfonate
Product Synonyms
MMS
CAS No.
66-27-3
Emergency telephone
001-800-227-6701, +32 14 57 52 11, 001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887
Icons in SDS
Company Information
company name
Fisher Scientific Company
GHS Information
Signal word
Danger
Section 2
SECTION 2: Hazards identification
(29 CFR 1910.1200) Classification
Signal word
Danger Hazard Statements Toxic if swallowed Causes skin irritation Causes serious eye irritation May cause an allergic skin reaction May cause genetic defects May cause cancer Suspected of damaging fertility or the unborn child May cause damage to organs through prolonged or repeated exposure
Prevention
Obtain special instructions before use Do not handle until all safety precautions have been read and understood Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product Contaminated work clothing should not be allowed out of the workplace Do not breathe dust/fume/gas/mist/vapors/spray Wear protective gloves/protective clothing/eye protection/face protection
Response
IF exposed or concerned: Get medical attention/advice Skin IF ON SKIN: Wash with plenty of soap and water Take off contaminated clothing If skin irritation or rash occurs: Get medical advice/attention Eyes IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing If eye irritation persists: Get medical advice/attention Ingestion IF SWALLOWED: Immediately call a POISON CENTER or doctor Rinse mouth
Storage
Store locked up
Disposal
Dispose of contents/container to an approved waste disposal plant
2.3 Other hazards
Toxic to aquatic life with long lasting effects
2.1 Classification of the substance or mixture
Category 3 Skin Corrosion/Irritation Category 2 Serious Eye Damage/Eye Irritation Category 2 Skin Sensitization Category 1 Germ Cell Mutagenicity Category 1B Carcinogenicity Category 1B Reproductive Toxicity Category 2 Specific target organ toxicity - (repeated exposure) Category 2 Label Elements