Name:
Tetraethyl orthosilicate 95%
Synonym:
Ethylsilicate; Tetraethoxysilane; TEO
CAS:
78-10-4
Section 1 - Chemical Product
MSDS Name:Tetraethyl orthosilicate 95%
Synonym:Ethylsilicate; Tetraethoxysilane; TEO
Synonym:Ethylsilicate; Tetraethoxysilane; TEO
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 78-10-4 | Tetraethyl orthosilicate | 95% | 201-083-8 |
| Hazard Symbols: XN Risk Phrases: 10 36/37 20 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Flammable. Irritating to eyes and respiratory system. Harmful by inhalation.Moisture sensitive.
Potential Health Effects
Eye:
Causes severe eye irritation. Causes redness and pain.
Skin:
Causes moderate skin irritation. Causes redness and pain. May cause contact dermatitis. Contact with the skin defats the skin.
Ingestion:
May cause irritation of the digestive tract. Ingestion may cause headache, nausea, and vomiting.
Inhalation:
Harmful if inhaled. Causes respiratory tract irritation. May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema.
May cause narcotic effects in high concentration. May cause lung damage.
Chronic:
Prolonged or repeated skin contact may cause defatting and dermatitis. May cause liver and kidney damage. Prolonged or repeated exposure may cause lung irritation, chest pain, and pulmonary edema.
Flammable. Irritating to eyes and respiratory system. Harmful by inhalation.Moisture sensitive.
Potential Health Effects
Eye:
Causes severe eye irritation. Causes redness and pain.
Skin:
Causes moderate skin irritation. Causes redness and pain. May cause contact dermatitis. Contact with the skin defats the skin.
Ingestion:
May cause irritation of the digestive tract. Ingestion may cause headache, nausea, and vomiting.
Inhalation:
Harmful if inhaled. Causes respiratory tract irritation. May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema.
May cause narcotic effects in high concentration. May cause lung damage.
Chronic:
Prolonged or repeated skin contact may cause defatting and dermatitis. May cause liver and kidney damage. Prolonged or repeated exposure may cause lung irritation, chest pain, and pulmonary edema.
Section 4 - FIRST AID MEASURES
Eyes: 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 soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure 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.
Skin:
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure 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. Will burn if involved in a fire. Flammable liquid and vapor. Closed containers may rupture violently when heated.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide.
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. Will burn if involved in a fire. Flammable liquid and vapor. Closed containers may rupture violently when heated.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide.
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. Remove all sources of ignition.
Use a spark-proof tool.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition.
Use a spark-proof tool.
Section 7 - HANDLING and STORAGE
Handling:
Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Take precautionary measures against static discharges.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Flammables-area.
Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Take precautionary measures against static discharges.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Flammables-area.
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.
Personal Protective Equipment Eyes: Not available.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
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.
Personal Protective Equipment Eyes: Not available.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Clear liquid
Appearance: Not available.
Odor: ester-like - slight characteristic odor
pH: Not available.
Vapor Pressure: 1.7 mbar @ 20 deg C
Viscosity: 0.75 mPa.s@20 deg C
Boiling Point: 166 - 169 deg C @ 7
Freezing/Melting Point: -85 deg C
Autoignition Temperature: 225 deg C ( 437.00 deg F)
Flash Point: 45 deg C ( 113.00 deg F)
Explosion Limits, lower: 1.30 Vol%
Explosion Limits, upper: 23 Vol%
Decomposition Temperature:
Solubility in water: Hydrolysis.
Specific Gravity/Density: .9340g/cm3
Molecular Formula: C8H20O4Si
Molecular Weight: 208.33
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable.
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong acids, strong oxidizing agents, caustic alkalis, alkali metals, alkaline earth metals.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, ethyl alcohol, silicon oxide, acrid smoke and fumes, organic acids.
Hazardous Polymerization: Will not occur.
Stable.
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong acids, strong oxidizing agents, caustic alkalis, alkali metals, alkaline earth metals.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, ethyl alcohol, silicon oxide, acrid smoke and fumes, organic acids.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 78-10-4: VV9450000 LD50/LC50:
CAS# 78-10-4: Draize test, rabbit, eye: 100 mg Mild; Draize test, rabbit, eye: 500 mg/24H Mild; Draize test, rabbit, skin: 500 mg/24H Moderate; Oral, rat: LD50 = 6270 mg/kg; Skin, rabbit: LD50 = 6300 uL/kg.
Carcinogenicity:
Tetraethyl orthosilicate - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
See actual entry in RTECS for complete information.
CAS# 78-10-4: VV9450000 LD50/LC50:
CAS# 78-10-4: Draize test, rabbit, eye: 100 mg Mild; Draize test, rabbit, eye: 500 mg/24H Mild; Draize test, rabbit, skin: 500 mg/24H Moderate; Oral, rat: LD50 = 6270 mg/kg; Skin, rabbit: LD50 = 6300 uL/kg.
Carcinogenicity:
Tetraethyl orthosilicate - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Other No information available.
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
No information available.
IMO
No information available.
RID/ADR
No information available.
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 10 Flammable.
R 36/37 Irritating to eyes and respiratory system.
R 20 Harmful by inhalation.
Safety Phrases:
WGK (Water Danger/Protection)
CAS# 78-10-4: 1
United Kingdom Occupational Exposure Limits
CAS# 78-10-4: OES-United Kingdom, TWA 10 ppm TWA; 87 mg/m3 TWA
CAS# 78-10-4: OES-United Kingdom, STEL 30 ppm STEL; 260 mg/m3 STEL
Canada
CAS# 78-10-4 is listed on Canadas DSL List.
CAS# 78-10-4 is listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 78-10-4: OEL-AUSTRALIA:TWA 10 ppm (85 mg/m3)
OEL-BELGIUM:TWA 10 ppm (85 mg/m3)
OEL-DENMARK:TWA 10 ppm (85 mg/m3)
OEL-FINLAND:TWA 10 ppm (85 mg/m3);STEL 20 ppm (17 mg/m3)
OEL-FRANCE:TWA 10 ppm (85 mg/m3)
OEL-GERMANY:TWA 100 ppm (850 mg/m3)
OEL-THE NETHERLANDS:TWA 10 ppm (85 mg/m3)
OEL-THE PHILIPPINES:TWA 100 ppm (850 mg/m3)
OEL-POLAND:TWA 80 mg/m3
OEL-RUSSIA:STEL 20 mg/m3
OEL-SWITZERLAND:TWA 10 ppm (85 mg/m3)
OEL-TURKEY:TWA 100 ppm (850 mg/m3)
OEL-UNITED KINGDOM:TWA 10 ppm (85 mg/m3);STEL 30 ppm (255 mg/m3)
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 78-10-4 is listed on the TSCA inventory.
