Product ID:TETRAETHYLORTHOSILICATE
MSDS Date:Nov 11 1997
MSDS Number: EEEOW
Kit Part:=== Responsible Party ===
Company Name:MATHESON TRI-GAS, INC.
Address:959 ROUTE 46 EAST
City:PARSIPPANY
State:NJ
ZIP:07054-0624
Country:US
Info Phone Num:(USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)
780-471-4036
Chemtrec Ind/Phone:18004249300

Telephone: (USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)

TETRAETHYLORTHOSILICATE

CAS: 78-10-4

Fraction By Weight: 100.0%

Reports of Carcinogenicity:NTP:No IARC:No OSHA:No
Health Hazards Acute and Chronic:INHALATION: SHORT TERM EXPOSURE:
irritation, nausea, vomiting, headache, symptoms of drunkenness,
lung congestion LONG TERM EXPOSURE: lung damage, kidney damage,
liver damage SKIN CONTACT: SHORT TERM EXPOSURE: irritation LONG
TERM EXPOSURE: same as effects reported in short term exposure EYE
CONTACT: SHORT TERM EXPOSURE: irritation, burns, tearing, blurred
vision LONG TERM EXPOSURE: same as effects reported in short term
exposure INGESTION: SHORT TERM EXPOSURE: nausea, vomiting,
diarrhea, headache LONG TERM EXPOSURE: same as effects reported in
short term exposure
Medical Cond Aggravated by Exposure:

First Aid: INHALATION: If adverse effects occur, remove to
uncontaminated area. Give artificial respiration if not breathing.
Get immediate medical attention. SKIN CONTACT: Wash skin with soap
and water for at least 15 minutes while removing contaminated
clothing and shoes. Get medical attention, if needed. Thoroughly
clean and dry contaminated clothing and shoes before reuse. EYE
CONTACT: Flush eyes with plenty of water for at least 15 minutes.
Then get immediate medical attention. INGESTION: If a large amount
is swallowed, get medical attention. NOTE TO PHYSICIAN: For
ingestion, consider gastric lavage and activated charcoal slurry.

Flash Point:99 F (37 C) (CC)
Lower Limits:1.3%
Upper Limits:23%
Extinguishing Media:regular dry chemical, carbon dioxide, water,
regular foam Large fires: Use regular foam or flood with fine water
spray.
Fire Fighting Procedures:Move container from fire area if it can be
done without risk. Do not get water inside container. Cool
containers with water spray until well after the fire is out. Stay
away from the ends of tanks. Withdraw immediately in case of rising
sound from venting safety device or any discoloration of tanks due
to fire. For tank, rail car or tank truck, evacuation radius: 800
meters (1/2 mile). Do not attempt to extinguish fire unless flow of
material can be stopped first. Cool containers with water spray
until well after the fire is out. Apply water from a protected
location or from a safe distance. Do not get water directly on
material. Large fires: Flood with fine water spray. Reduce vapors
with water spray. Avoid inhalation of material or combustion
by-products. Stay upwind and keep out of low areas.
Unusual Fire/Explosion Hazard:Severe fire hazard. The vapor is heavier
than air. Vapors or gases may ignite at distant ignition sources
and flash back. Vapor/air mixtures are explosive above flash point.

Spill Release Procedures:Avoid heat, flames, sparks and other sources
of ignition. Do not touch spilled material. Stop leak if possible
without personal risk. Reduce vapors with water spray. Do not get
water inside container. Small spills: Absorb with sand or other
non-combustible material. Collect spilled material in appropriate
container for disposal. Large spills: Dike for later disposal.
Remove sources of ignition. Keep unnecessary people away, isolate
hazard area and deny entry.
Neutralizing Agent:

Handling and Storage Precautions:Store and handle in accordance with
all current regulations and standards. Store in a cool, dry place.
Store in a tightly closed container. Store under an inert
atmosphere. Subject to storage regulations: U.S. OSHA 29 CFR
1910.106. Grounding and bonding required. Keep separated from
incompatible substances.
Other Precautions:

Respiratory Protection: TETRAETHYLORTHOSILICATE: ETHYL SILICATE: 100
ppm (850 mg/m3) OSHA TWA 10 ppm (85 mg/m3) OSHA TWA (vacated by 58
FR 35338, June 30, 1993) 10 ppm ACGIH TWA 10 ppm (85 mg/m3) NIOSH
recommended TWA 10 hour(s) ETHYL ALCOHOL (ETHANOL): 1000 ppm (1900
mg/m3) OSHA TWA 1000 ppm ACGIH TWA 1000 ppm (1900 mg/m3) NIOSH
recommended TWA 10 hour(s)
Ventilation:Ventilation equipment should be explosion-resistant if
explosive concentrations of material are present. Provide local
exhaust ventilation system. Ensure compliance with applicable
exposure limits.
Protective Gloves:Wear appropriate chemical resistant gloves.
Eye Protection:Wear splash resistant safety goggles with a faceshield.
Provide an emergency eye wash fountain and quick drench shower in
the immediate work area.
Other Protective Equipment:Wear appropriate chemical resistant
clothing.
Supplemental Safety and Health
TETRAETHYLORTHOSILICATE: ETHYL SILICATE: 100 ppm (850 mg/m3) OSHA TWA
10 ppm (85 mg/m3) OSHA TWA (vacated by 58 FR 35338, June 30, 1993)
10 ppm ACGIH TWA 10 ppm (85 mg/m3) NIOSH recommended TWA 10 hour(s)
ETHYL ALCOHOL (ETHANOL): 1000 ppm (1900 mg/m3) OSHA TWA 1000 ppm
ACGIH TWA 1000 ppm (1900 mg/m3) NIOSH recommended TWA 10 hour(s)

Boiling Pt:329-336 F (165-169 C)
Melt/Freeze Pt:-123 to -107 F (-86 to -77 C)
Vapor Pres:2 mmHg @ 20 C
Vapor Density:7.2
Spec Gravity:0.920-0.950
pH:Not available
Evaporation Rate & Reference:0.3 (butyl acetate=1)
Solubility in Water:decomposes
Appearance and Odor:PHYSICAL STATE:liquid COLOR:colorless ODOR:alcohol
odor
Corrosion Rate:

Stability Indicator/Materials to Avoid:Contact with water or moist air
may form flammable and/or toxic gases or vapors.
Stability Condition to Avoid:Avoid heat, flames, sparks and other
sources of ignition. Minimize contact with material. Keep out of
water supplies and sewers.
Hazardous Decomposition Products:Thermal decomposition products or
combustion: oxides of carbon, silica Thermal decomposition products
or combustion: oxides of carbon, silica Thermal decomposition
products: alcohols, silicon
Conditions to Avoid Polymerization:Will not polymerize.

Waste Disposal Methods:Dispose in accordance with all applicable
regulations. Subject to disposal regulations: U.S. EPA 40 CFR 262.
Hazardous Waste Number(s): D001. Dispose in accordance with all
applicable regulations.

Toxicological Information:TETRAETHYLORTHOSILICATE: IRRITATION DATA:
3000 ppm eyes-human; 500 mg/24 hour(s) skin-rabbit moderate; 100 mg
eyes-rabbit mild; 500 mg/24 hour(s) eyes-rabbit mild; 2500 ppm/2
hour(s) eyes-guinea pig severe TOXICITY DATA: 6300 ul/kg
skin-rabbit LD50; 6270 mg/kg oral-rat LD50 LOCAL EFFECTS: Irritant:
inhalation, skin, eye ACUTE TOXICITY LEVEL: Slightly Toxic: dermal
absorption, ingestion TARGET ORGANS: central nervous system MEDICAL
CONDITIONS AGGRAVATED BY EXPOSURE: blood system disorders, eye
disorders, kidney disorders, liver disorders, respiratory
disorders, skin disorders and allergies

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.

Ecological:ECOTOXICITY DATA: INVERTEBRATE TOXICITY: 4000 ug/L 15
month(s) LETH (Mortality) Water flea (Daphnia magna) ALGAL
TOXICITY: 1000 ug/L 30 month(s) LETH (Mortality) Green algae
(Chlorella vulgaris)

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Tetraethyl silicate ID NUMBER: UN1292 HAZARD CLASS OR DIVISION: 3
PACKING GROUP: III LABELING REQUIREMENTS: Flammable liquid

SARA Title III Information: SARA TITLE III SECTION 302 EXTREMELY
HAZARDOUS SUBSTANCES (40 CFR 355.30): Not regulated. SARA TITLE
III SECTION 304 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.40): Not
regulated. SARA TITLE III SARA SECTIONS 311/312 HAZARDOUS
CATEGORIES (40 CFR 370.21): ACUTE: Yes CHRONIC: No FIRE: Yes
REACTIVE: Yes SUDDEN RELEASE: No SARA TITLE III SECTION 313 (40
CFR 372.65): Not regulated.
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): Not regulated. OSHA PROCESS SAFETY
(29CFR1910.119): Not regulated.
State Regulatory Information: California Proposition 65: Not regulated.