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Sodium thiomethoxide 5188-07-8 MSDS
Name: Sodium thiomethoxide 95% Material Safety Data Sheet
Synonym: Methanethiol, sodium salt; Methyl mercaptan sodium salt; Sodium methanethiolate; Sodium thiomethylate; Thiomethoxide, sodiu
CAS: 5188-07-8
Section 1 - Chemical Product   MSDS Name:Sodium thiomethoxide 95% Material Safety Data Sheet
Synonym:Methanethiol, sodium salt; Methyl mercaptan sodium salt; Sodium methanethiolate; Sodium thiomethylate; Thiomethoxide, sodiu

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
5188-07-8 Sodium thiomethoxide 95 225-969-9
Hazard Symbols: F C
Risk Phrases: 11 34

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Highly flammable. Causes burns.The toxicological properties of this material have not been fully investigated.Corrosive.Water-reactive.Air sensitive.Light sensitive.
Potential Health Effects
Eye:
Causes eye burns.
Skin:
Causes skin burns.
Ingestion:
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. The toxicological properties of this substance have not been fully investigated. Ingestion may cause headache, nausea, and vomiting.
Inhalation:
May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema. Causes chemical burns to the respiratory tract.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed. Extensive irrigation with water is required (at least 30 minutes).
Skin:
Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
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. Will burn if involved in a fire. Water Reactive.
Material will react with water and may release a flammable and/or toxic gas. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Flammable solid. May ignite or explode on contact with steam or moist air. May re-ignite after fire is extinguished.
Extinguishing Media:
Use approved class D extinguishing agents or smother with dry sand, clay, or sodium bicarbonate. DO NOT USE WATER! Do NOT get water inside containers. Contact professional fire-fighters immediately.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Cover with sand, dry lime or soda ash and place in a closed container for disposal. Provide ventilation. Do not expose spill to water.

Section 7 - HANDLING and STORAGE
  Handling:
Remove contaminated clothing and wash before reuse. Do not allow water to get into the container because of violent reaction. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Store protected from light. Use only in a chemical fume hood. Discard contaminated shoes. Keep from contact with moist air and steam.
Storage:
Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Keep under a nitrogen blanket. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Flammables-area.
Store protected from light.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use only under a chemical fume hood.
Exposure Limits CAS# 5188-07-8: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Powder
Color: off-white - light orange
Odor: unpleasant odor
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: CH3NaS
Molecular Weight: 70.09

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions. Combines vigorously or explosively with water. Sensitive to light.
Conditions to Avoid:
Incompatible materials, light, dust generation, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong oxidizing agents, acids.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 5188-07-8 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
Sodium thiomethoxide - Not listed by ACGIH, IARC, or NTP.

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: SELF-HEATING SOLID, CORROSIVE, ORGANIC, N.O.S.*
Hazard Class: 4.2 (8)
UN Number: 3126
Packing Group: II
IMO
Shipping Name: SELF-HEATING SOLID, CORROSIVE, ORGANIC, N.O.S.
Hazard Class: 4.2 (8)
UN Number: 3126
Packing Group: II
RID/ADR
Shipping Name: SELF-HEATING SOLID, CORROSIVE, ORGANIC, N.O.S.
Hazard Class: 4.2
UN Number: 3126
Packing group: II

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: F C
Risk Phrases:
R 11 Highly flammable.
R 34 Causes burns.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 25 Avoid contact with eyes.
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# 5188-07-8: No information available.
Canada
CAS# 5188-07-8 is listed on Canada's NDSL List.
CAS# 5188-07-8 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 5188-07-8 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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