Tetraethyl Orthosilicate http://www.jtbaker.com/msds/T1131.htm
Tetraethyl Orthosilicate
MSDS Number: T1131 --- Effective Date: 09/06/01
1. Product Identification
Synonyms: Ethyl Silicate; Silicic Acid, Tetraethyl Ester; Tetraethoxysilane
CAS No.: 78-10-4
Molecular Weight: 208.33
Chemical Formula: (C2H5O)4Si
Product Codes: V492
2. Composition/Information on Ingredients
Ingredient CAS No Percent Hazardous
--------------------------------------- ------------ ------- ---------
Ethyl Silicate 78-10-4 100% Yes
3. Hazards Identification
Emergency Overview
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WARNING! FLAMMABLE LIQUID AND VAPOR. HARMFUL IF SWALLOWED OR
INHALED. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT.
AFFECTS LIVER, KIDNEYS AND BLOOD.
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J.T. Baker SAF-T-DATA(tm) Ratings (Provided here for your convenience)
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Health Rating: 1 - Slight
Flammability Rating: 2 - Moderate
Reactivity Rating: 1 - Slight
Contact Rating: 2 - Moderate
Lab Protective Equip: GOGGLES; LAB COAT; VENT HOOD; PROPER GLOVES; CLASS B
EXTINGUISHER
Storage Color Code: Red (Flammable)
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Potential Health Effects
----------------------------------
Inhalation:
Causes irritation to the respiratory tract. Symptoms may include coughing, shortness of breath.
Inhalation may result in symptoms and problems similar to ingestion.
Ingestion:
Causes irritation to the gastrointestinal tract. Symptoms may include nausea, vomiting and diarrhea.
Anemia and pulmonary, kidney, and liver damage are possible. May cause central nervous system
depression. Symptoms may include lethargy, drowsiness, staggering and sleepiness.
Skin Contact:
Causes irritation to skin. Symptoms include redness, itching, and pain.
Eye Contact:
Vapors are irritating to the eyes. Splashes may cause severe irritation, with stinging, tearing, redness
and pain. Exposure to vapors becomes intolerable at concentrations of 3000 ppm.
Chronic Exposure:
No information found.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin or blood disorders, eye problems, or impaired liver, kidney or
respiratory/pulmonary function may be more susceptible to the effects of the substance.
4. First Aid Measures
Inhalation:
Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Get medical attention.
Ingestion:
Give large amounts of water to drink. Never give anything by mouth to an unconscious person. Get
medical attention.
Skin Contact:
Immediately flush skin with plenty of water for at least 15 minutes. Remove contaminated clothing
and shoes. Get medical attention. Wash clothing before reuse. Thoroughly clean shoes before reuse.
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Eye Contact:
Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids
occasionally. Get medical attention immediately.
5. Fire Fighting Measures
Fire:
Flash point: 40.6C (106F) CC
Flammable Liquid and Vapor!
Explosion:
Sealed containers may rupture when heated. Above the flash point, explosive vapor-air mixtures
may be formed. Vapors can flow along surfaces to distant ignition source and flash back.
Fire Extinguishing Media:
Use CO2, foam, dry chemical, water spray or fog for extinguishing surrounding fire. Water spray
may be used to keep fire exposed containers cool.
Special Information:
In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing
apparatus with full facepiece operated in the pressure demand or other positive pressure mode.
6. Accidental Release Measures
Ventilate area of leak or spill. Remove all sources of ignition. Wear appropriate personal protective
equipment as specified in Section 8. Isolate hazard area. Keep unnecessary and unprotected
personnel from entering. Contain and recover liquid when possible. Use non-sparking tools and
equipment. Collect liquid in an appropriate container or absorb with an inert material (e. g.,
vermiculite, dry sand, earth), and place in a chemical waste container. Do not use combustible
materials, such as saw dust. Do not flush to sewer! If a leak or spill has not ignited, use water spray
to disperse the vapors, to protect personnel attempting to stop leak, and to flush spills away from
exposures.
J. T. Baker SOLUSORB(R) solvent adsorbent is recommended for spills of this product.
7. Handling and Storage
Protect against physical damage. Store in a cool, dry well-ventilated location, away from any area
where the fire hazard may be acute. Outside or detached storage is preferred. Separate from
incompatibles. Containers should be bonded and grounded for transfers to avoid static sparks.
Storage and use areas should be No Smoking areas. Use non-sparking type tools and equipment,
including explosion proof ventilation. Containers of this material may be hazardous when empty
since they retain product residues (vapors, liquid); observe all warnings and precautions listed for
the product. Do Not attempt to clean empty containers since residue is difficult to remove. Do not
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pressurize, cut, weld, braze, solder, drill, grind or expose such containers to heat, sparks, flame,
static electricity or other sources of ignition: they may explode and cause injury or death.
8. Exposure Controls/Personal Protection
Airborne Exposure Limits:
-OSHA Permissible Exposure Limit (PEL):
100 ppm (TWA) The PEL for Tetraethyl Orthosilicate is listed under Ethyl silicate.
-ACGIH Threshold Limit Value (TLV):
10 ppm (TWA) The TLV for Tetraethyl Orthosilicate is listed under Ethyl silicate.
Ventilation System:
A system of local and/or general exhaust is recommended to keep employee exposures below the
Airborne Exposure Limits. Local exhaust ventilation is generally preferred because it can control the
emissions of the contaminant at its source, preventing dispersion of it into the general work area.
Please refer to the ACGIH document, Industrial Ventilation, A Manual of Recommended
Practices, most recent edition, for details.
Personal Respirators (NIOSH Approved):
If the exposure limit is exceeded and engineering controls are not feasible, wear a supplied air,
full-facepiece respirator, airlined hood, or full-facepiece self-contained breathing apparatus.
Breathing air quality must meet the requirements of the OSHA respiratory protection standard
(29CFR1910.134).
Skin Protection:
Wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as
appropriate, to prevent skin contact.
Eye Protection:
Use chemical safety goggles and/or a full face shield where splashing is possible. Maintain eye wash
fountain and quick-drench facilities in work area.
9. Physical and Chemical Properties
Appearance:
Clear, colorless liquid.
Odor:
Alcohol odor.
Solubility:
Practically insoluble in water. Hydrolyzes in water.
Specific Gravity:
0.933 @ 20C/4C
pH:
No information found.
% Volatiles by volume @ 21C (70F):
99.9
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Boiling Point:
165 - 166C (329 - 331F) Decomposes.
Melting Point:
- 77C (-107F)
Vapor Density (Air=1):
7.22
Vapor Pressure (mm Hg):
1 @ 20C (68F)
Evaporation Rate (BuAc=1):
1
10. Stability and Reactivity
Stability:
Stable under ordinary conditions of use and storage.
Hazardous Decomposition Products:
Oxides of carbon and silicon may be formed when heated to decomposition.
Hazardous Polymerization:
Will not occur.
Incompatibilities:
Ethyl silicate can react dangerously with strong oxidizing agents. Incompatible with alkalis and
mineral acids; hydrolyzes slowly and nonviolently under moist alkaline or acidic conditions at
ambient temperatures and atmospheric pressures to form silicon dioxide and ethanol. Reacts with
water to form a silicone adhesive (a milky-white mass). Causes swelling and hardening of some
plastics.
Conditions to Avoid:
Heat, flames, ignition sources and incompatibles.
11. Toxicological Information
For Ethyl Silicate: LD50 Oral Rat: 6270 mg/kg; LD50 Skin Rabbit: 6300ul/kg. Irritation Data (Std
Draize, Rabbit, 500 mg/24H): skin, moderate; eye, mild.
--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Ethyl Silicate (78-10-4) No No None
12. Ecological Information
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Tetraethyl Orthosilicate http://www.jtbaker.com/msds/T1131.htm
Environmental Fate:
No information found.
Environmental Toxicity:
No information found.
13. Disposal Considerations
Whatever cannot be saved for recovery or recycling should be handled as hazardous waste and
sent to a RCRA approved waste facility. Processing, use or contamination of this product may
change the waste management options. State and local disposal regulations may differ from federal
disposal regulations. Dispose of container and unused contents in accordance with federal, state and
local requirements.
14. Transport Information
Domestic (Land, D.O.T.)
-----------------------
Proper Shipping Name: TETRAETHYL ORTHOSILICATE
Hazard Class: 3
UN/NA: UN1292
Packing Group: III
Information reported for product/size: 4L
International (Water, I.M.O.)
-----------------------------
Proper Shipping Name: TETRAETHYL ORTHOSILICATE
Hazard Class: 3
UN/NA: UN1292
Packing Group: III
Information reported for product/size: 4L
International (Air, I.C.A.O.)
-----------------------------
Proper Shipping Name: TETRAETHYL ORTHOSILICATE
Hazard Class: 3
UN/NA: UN1292
Packing Group: III
Information reported for product/size: 4L
15. Regulatory Information
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--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
Ethyl Silicate (78-10-4) Yes Yes Yes Yes
--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Ethyl Silicate (78-10-4) Yes Yes No Yes
--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Ethyl Silicate (78-10-4) No No No No
--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Ethyl Silicate (78-10-4) No No No
Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: Yes Chronic: No Fire: Yes Pressure: No
Reactivity: No (Pure / Liquid)
Australian Hazchem Code: 3Y
Poison Schedule: No information found.
WHMIS:
This MSDS has been prepared according to the hazard criteria of the Controlled Products
Regulations (CPR) and the MSDS contains all of the information required by the CPR.
16. Other Information
NFPA Ratings: Health: 2 Flammability: 2 Reactivity: 0
Label Hazard Warning:
WARNING! FLAMMABLE LIQUID AND VAPOR. HARMFUL IF SWALLOWED OR
INHALED. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT.
AFFECTS LIVER, KIDNEYS AND BLOOD.
Label Precautions:
Keep away from heat, sparks and flame.
Keep container closed.
Use only with adequate ventilation.
Avoid contact with eyes, skin and clothing.
Avoid breathing vapor or mist.
Wash thoroughly after handling.
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Label First Aid:
If swallowed, give large amounts of water to drink. Never give anything by mouth to an unconscious
person. If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is
difficult, give oxygen. In case of contact, immediately flush eyes or skin with plenty of water for at
least 15 minutes. Remove contaminated clothing and shoes. Wash clothing before reuse. In all
cases, get medical attention.
Product Use:
Laboratory Reagent.
Revision Information:
MSDS Section(s) changed since last revision of document include: 3, 4, 5, 6, 7, 8, 9, 10, 11, 14,
15, 16.
Disclaimer:
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Mallinckrodt Baker, Inc. provides the information contained herein in good faith but
makes no representation as to its comprehensiveness or accuracy. This document is
intended only as a guide to the appropriate precautionary handling of the material by a
properly trained person using this product. Individuals receiving the information must
exercise their independent judgment in determining its appropriateness for a particular
purpose. MALLINCKRODT BAKER, INC. MAKES NO REPRESENTATIONS OR
WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT
LIMITATION ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH
HEREIN OR THE PRODUCT TO WHICH THE INFORMATION REFERS.
ACCORDINGLY, MALLINCKRODT BAKER, INC. WILL NOT BE RESPONSIBLE
FOR DAMAGES RESULTING FROM USE OF OR RELIANCE UPON THIS
INFORMATION.
*****************************************************************************************
Prepared by: Environmental Health & Safety
Phone Number: (314) 654-1600 (U.S.A.)
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