Methyltriethoxysilane 2031-67-6 MSDS
Name: Methyltriethoxysilane 98+% Material Safety Data Sheet
Synonym: MTES; Triethoxymethylsilane; Triethoxysilylmethane
CAS: 2031-67-6
Section 1 - Chemical Product   MSDS Name:Methyltriethoxysilane 98+% Material Safety Data Sheet
Synonym:MTES; Triethoxymethylsilane; Triethoxysilylmethane

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
2031-67-6 Methyltriethoxysilane >98 217-983-9
Hazard Symbols: None Listed.
Risk Phrases: 10

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Flammable.
Potential Health Effects
Eye:
Causes mild eye irritation. May cause chemical conjunctivitis and corneal damage.
Skin:
Causes mild skin irritation.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion of large amounts may cause CNS depression.
Inhalation:
Causes respiratory tract irritation. Vapors may cause dizziness or suffocation. Can produce delayed pulmonary edema. May cause burning sensation in the chest.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Effects may be delayed. Ethanol is mainly metabolized in the liver, which is also one of the primary target organs. While ethanol is well known to cause cirrhosis of the liver in alcoholics, liver cirrhosis has also been produced in rabbits exposed by inhalation.

Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
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.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

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. Vapors may form an explosive mixture with air.
Vapors can travel to a source of ignition and flash back. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Flammable liquid and vapor. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Contact with water liberates highly flammable gases.
Extinguishing Media:
Use carbon dioxide or dry chemical. Do NOT get water inside containers.

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. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Do not get water inside containers. A vapor suppressing foam may be used to reduce vapors.

Section 7 - HANDLING and STORAGE
  Handling:
Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Keep away from heat, sparks and flame. Avoid ingestion and inhalation. Do not allow contact with water. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep from contact with moist air and steam.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Flammables-area. Store protected from moisture.

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 general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
Exposure Limits CAS# 2031-67-6: 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:
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: Liquid
Color: clear, colorless
Odor: None reported.
pH: Not available.
Vapor Pressure: 11 mm Hg @ 20 deg C
Viscosity: Not available.
Boiling Point: 141-143 deg C @ 760 mmHg
Freezing/Melting Point: Not available.
Autoignition Temperature: 220 deg C ( 428.00 deg F)
Flash Point: 23 deg C ( 73.40 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Reacts.
Specific Gravity/Density: 0.8900 g/ml
Molecular Formula: C7H18O3Si
Molecular Weight: 178.30

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures. Material generates ethanol on contact with water.
Conditions to Avoid:
Ignition sources, moisture, excess heat.
Incompatibilities with Other Materials:
Water, strong oxidizing agents, strong acids.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, silicon dioxide, ethanol.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 2031-67-6: VV4640000 LD50/LC50:
CAS# 2031-67-6: Draize test, rabbit, eye: 100 uL Mild; Draize test, rabbit, skin: 500 mg/24H Mild; Oral, rat: LD50 = 8570 uL/kg; Skin, rabbit: LD50 = 13300 uL/kg.
Carcinogenicity:
Methyltriethoxysilane - Not listed by ACGIH, IARC, or NTP.
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: FLAMMABLE LIQUID, N.O.S.*
Hazard Class: 3
UN Number: 1993
Packing Group: III
IMO
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3.3
UN Number: 1993
Packing Group: III
RID/ADR
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3
UN Number: 1993
Packing group: III

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
R 10 Flammable.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
WGK (Water Danger/Protection)
CAS# 2031-67-6: No information available.
Canada
CAS# 2031-67-6 is listed on Canada's DSL List.
CAS# 2031-67-6 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 2031-67-6 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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