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methyl methanesulfonate 66-27-3 MSDS
Name: Methyl methanesulfonate Material Safety Data Sheet
Synonym: MMS
CAS: 66-27-3
Section 1 - Chemical Product   MSDS Name:Methyl methanesulfonate Material Safety Data Sheet
Synonym:MMS

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
66-27-3 Methyl methanesulfonate 99 200-625-0
Hazard Symbols: T
Risk Phrases: 22 36/37/38 45 68

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Harmful if swallowed. Irritating to eyes, respiratory system and skin. May cause cancer.Possible risk of irreversible effects.Cancer suspect agent.
Potential Health Effects
Eye:
Causes eye irritation. Strong irritant of the eyes.
Skin:
Causes skin irritation. May be harmful if absorbed through the skin.
Strong irritant of the skin. Not expected to cause an allergic skin reaction.
Ingestion:
Harmful if swallowed.
Inhalation:
Causes respiratory tract irritation. May be harmful if inhaled.
Chronic:
Possible cancer hazard based on tests with laboratory animals.
Chronic exposure may cause liver damage.

Section 4 - FIRST AID MEASURES
  Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid breathing vapor or mist.
Storage:
Store in a cool, dry place.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 66-27-3: Personal Protective Equipment Eyes: Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: clear colorless to pale yellow
Odor: slight
pH: Not available.
Vapor Pressure: 0.31 mm Hg @ 25 deg C
Viscosity: Not available.
Boiling Point: 202-203 deg C
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: 104 deg C ( 219.20 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: 200 g/l @ 20C
Specific Gravity/Density: 1.3000
Molecular Formula: C2H6O3S
Molecular Weight: 110.13

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, carbon dioxide.
Hazardous Polymerization: Will not occur.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 66-27-3: PB2625000 LD50/LC50:
CAS# 66-27-3: Oral, mouse: LD50 = 290 mg/kg; Oral, rat: LD50 = 225 mg/kg.
Carcinogenicity:
Methyl methanesulfonate - California: carcinogen, initial date 4/1/88 NTP: Suspect carcinogen IARC: Group 2A carcinogen Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
 

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: TOXIC LIQUID, ORGANIC, N.O.S.*
Hazard Class: 6.1
UN Number: 2810
Packing Group: III
IMO
Shipping Name: TOXIC LIQUID, ORGANIC, N.O.S.
Hazard Class: 6.1
UN Number: 2810
Packing Group: III
RID/ADR
Shipping Name: TOXIC LIQUID, ORGANIC, N.O.S.
Hazard Class: 6.1
UN Number: 2810
Packing group: III

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T
Risk Phrases:
R 45 May cause cancer.
R 22 Harmful if swallowed.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
R 68 Possible risk of irreversible effects.
Safety Phrases:
S 53 Avoid exposure - obtain special instructions
before use.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 66-27-3: No information available.
Canada
CAS# 66-27-3 is listed on Canada's DSL List.
CAS# 66-27-3 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 66-27-3 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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