Flash Point:not flammable
Extinguishing Media:carbon dioxide, regular dry chemical 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. Cool containers with water spray until well
after the fire is out. Stay away from the ends of tanks. Keep
unnecessary people away, isolate hazard area and deny entry.
Unusual Fire/Explosion Hazard:Negligible fire hazard.

Spill Release Procedures:Stop leak if possible without personal risk.
Reduce vapors with water spray. Do not get water directly on
material. Keep unnecessary people away, isolate hazard area and
deny entry. Stay upwind and keep out of low areas. Ventilate closed
spaces before entering. Evacuation radius: 150 feet.
Neutralizing Agent:

Handling and Storage Precautions:Store and handle in accordance with
all current regulations and standards. Store below 52 C. Store in a
cool, dry place. Store in a well-ventilated area. Subject to
storage regulations: U.S. OSHA 29 CFR 1910.101. See original
container for storage recommendations. Keep separated from
incompatible substances.
Other Precautions:

Respiratory Protection:No respirator is required under normal
conditions of use. Under conditions of frequent use or heavy
exposure, respiratory protection may be needed. For Unknown
Concentrations or Immediately Dangerous to Life or Health - Any
supplied-air respirator with full facepiece and operated in a
pressure-demand or other positive-pressure mode in combination with
a separate escape supply. Any self-contained breathing apparatus
with a full facepiece.
Ventilation:Provide local exhaust or process enclosure 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
SILICON TETRAFLUORIDE: INORGANIC FLUORIDES (as F): 2.5 mg/m3 OSHA TWA
2.5 mg/m3 ACGIH TWA 2.5 mg/m3 NIOSH recommended TWA 10 hour(s)

Boiling Pt:-123 F (-86 C)
Melt/Freeze Pt:-130 F (-90 C)
Vapor Pres:Not available
Vapor Density:3.63
Spec Gravity:1.7 @ -95 C
pH:acidic in solution
Evaporation Rate & Reference:Not applicable
Solubility in Water:decomposes
Appearance and Odor:PHYSICAL STATE:gas COLOR:colorless ODOR:irritating
odor
Corrosion Rate:

Stability Indicator/Materials to Avoid:May react with evolution of heat
on contact with water. Releases toxic, corrosive, flammable or
explosive gases.
Stability Condition to Avoid:Minimize contact with material. Containers
may rupture or explode if exposed to heat.
Hazardous Decomposition Products:Thermal decomposition products: acid
halides Thermal decomposition products: acid halides
Conditions to Avoid Polymerization:Will not polymerize.

Waste Disposal Methods:Dispose in accordance with all applicable
regulations.

Toxicological Information:SILICON TETRAFLUORIDE: TOXICITY DATA: 2272
ppm inhalation-rat LC50 LOCAL EFFECTS: Corrosive: inhalation, skin,
eye, ingestion ACUTE TOXICITY LEVEL: Moderately Toxic: inhalation
MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: central nervous system
disorders, bone, joint or tooth disorders, eye disorders, kidney
disorders, respiratory disorders, skin disorders and allergies
ADDITIONAL DATA: May cross the placenta. May be excreted in breast
milk.

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:Not available

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Silicon tetrafluoride, compressed ID NUMBER: UN1859 HAZARD CLASS OR
DIVISION: 2.3 LABELING REQUIREMENTS: Poison gas; Corrosive QUANTITY
LIMITATIONS: PASSENGER AIRCRAFT OR RAILCAR: Forbidden CARGO
AIRCRAFT ONLY: Forbidden

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: No
REACTIVE: Yes SUDDEN RELEASE: Yes 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.