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MSDS 
:
 Sodium bis(trimethylsilyl)amide, 2M solution in THF
CAS 
:
 109-99-9
SYNONYMS 
:
 N-Sodiumhexamethyldisilazane
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 109-99-9 |Tetrahydrofuran | 63.33 | 203-726-8 |
|----------------|--------------------------------------|----------|-----------|
| 1070-89-9 |Sodium bis(trimethylsilyl)amide | 36.67 | 213-983-8 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: F C
Risk Phrases: 11 15 34

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Highly flammable. Contact with water liberates extremely flammable
gases. Causes burns.Moisture sensitive.Corrosive.

Potential Health Effects
Eye:
Causes eye burns. May cause chemical conjunctivitis and corneal
damage.
Skin:
Causes skin burns. May cause skin rash (in milder cases), and cold
and clammy skin with cyanosis or pale color.
Ingestion:
May cause severe and permanent damage to the digestive tract. Causes
gastrointestinal tract burns. May cause perforation of the digestive
tract. May cause systemic effects.
Inhalation:
May cause severe irritation of the respiratory tract with sore
throat, coughing, shortness of breath and delayed lung edema. Causes
chemical burns to the respiratory tract. Aspiration may lead to
pulmonary edema. Vapors may cause dizziness or suffocation. May
cause systemic effects.
Chronic:
May cause liver and kidney damage. Prolonged exposure may produce a
narcotic effect. Effects may be delayed.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
Get medical aid immediately. Do NOT allow victim to rub eyes or keep
eyes closed. Extensive irrigation with water is required (at least 30
minutes).
Skin:
Get medical aid immediately. Immediately flush skin with plenty of
water for at least 15 minutes while removing contaminated clothing
and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
Do not induce vomiting. 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 immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If breathing is difficult, give oxygen. Do NOT use
mouth-to-mouth resuscitation. If breathing has ceased apply
artificial respiration using oxygen and a suitable mechanical device
such as a bag and a mask.
Notes to Physician:

**** 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. Use water spray to keep fire-exposed
containers cool. Extremely flammable liquid and vapor. Water may be
ineffective. Material is lighter than water and a fire may be spread
by the use of water. Containers may explode in the heat of a fire.
May form explosive peroxides. Vapors may be heavier than air. They
can spread along the ground and collect in low or confined areas.
Will be easily ignited by heat, sparks or flame. Contact with water
liberates highly flammable gases.
Extinguishing Media:
Do NOT use water directly on fire. Use water spray to cool
fire-exposed containers. Use foam, dry chemical, or carbon dioxide.
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. Avoid runoff into storm sewers and
ditches which lead to waterways. 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:
Use only in a well-ventilated area. Ground and bond containers when
transferring material. Do not breathe dust, vapor, mist, or gas. Do
not get in eyes, on skin, or on 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. Do
not ingest or inhale. Do not allow contact with water. Discard
contaminated shoes. 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. Keep container closed when not in use. 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# 109-99-9:
United Kingdom, WEL - TWA: 50 ppm TWA; 150 mg/m3 TWA
United Kingdom, WEL - STEL: 100 ppm STEL; 300 mg/m3 STEL
United States OSHA: 200 ppm TWA; 590 mg/m3 TWA
Belgium - TWA: 200 ppm VLE; 599 mg/m3 VLE
Belgium - STEL: 100 ppm VLE; 300 mg/m3 VLE
France - VME: 200 ppm VME; 590 mg/m3 VME
Germany: 50 ppm TWA; 150 mg/m3 TWA
Germany: Skin absorber
Japan: 200 ppm OEL; 590 mg/m3 OEL
Malaysia: 200 ppm TWA; 590 mg/m3 TWA
Netherlands: 100 ppm MAC; 300 mg/m3 MAC
Russia: 100 mg/m3 TWA
Spain: 50 ppm VLA-ED; 150 mg/m3 VLA-ED
Spain: 100 ppm VLA-EC; 300 mg/m3 VLA-EC
CAS# 1070-89-9:
United Kingdom, WEL - TWA: (listed as silica, amorphous): 6 mg/m3
(inhalable dust); 2.4 mg/m3 TWA (respirable dust)
United Kingdom, WEL - STEL: (listed as silica, amorphous): 18 mg/
STEL (inhalable dust); 7.2 mg/m3 STEL (respirable dust)

Russia: (listed as silica, amorphous): 1 mg/m3 TWA

Personal Protective Equipment

Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
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 brown
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not applicable.
Flash Point: -17 deg C ( 1.40 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density: 0.920
Molecular Formula: C6H18NSi2Na
Molecular Weight: 183.38

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable under normal temperatures and pressures. May form explosive
peroxides.
Conditions to Avoid:
Incompatible materials, ignition sources, moisture, excess heat.
Incompatibilities with Other Materials:
Moisture, acids, bases, strong oxidizing agents.
Hazardous Decomposition Products:
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and
gases, carbon dioxide, nitrogen, silicon dioxide.
Hazardous Polymerization: Has not been reported.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 109-99-9: LU5950000
CAS# 1070-89-9 unlisted.
LD50/LC50:
CAS# 109-99-9: Inhalation, rat: LC50 = 21000 ppm/3H; Oral, rat: LD50
= 1650 mg/kg.
CAS# 1070-89-9.
Carcinogenicity:
Tetrahydrofuran -
ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to
Sodium bis(trimethylsilyl)amide -
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, CORROSIVE, N.O.S.*
Hazard Class: 3 (8)
UN Number: 2924
Packing Group: II
IMO
Shipping Name: FLAMMABLE LIQUID, CORROSIVE, N.O.S.
Hazard Class: 3.2 (8)
UN Number: 2924
Packing Group: II
RID/ADR
Shipping Name: FLAMMABLE LIQUID, CORROSIVE, N.O.S.
Hazard Class: 3
UN Number: 2924
Packing group: II
USA RQ: CAS# 109-99-9: 1000 lb final RQ; 454 kg final RQ

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: F C
Risk Phrases:
R 11 Highly flammable.
R 15 Contact with water liberates extremely
flammable gases.
R 34 Causes burns.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 109-99-9: 1
CAS# 1070-89-9: No information available.
Canada
CAS# 109-99-9 is listed on Canada's DSL List.
CAS# 1070-89-9 is listed on Canada's NDSL List.
CAS# 109-99-9 is listed on Canada's Ingredient Disclosure List.
CAS# 1070-89-9 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 109-99-9 is listed on the TSCA inventory.
CAS# 1070-89-9 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

Text for R-phrases from Section 2
R 11 Highly flammable.
R 19 May form explosive peroxides.
R 36/37 Irritating to eyes and respiratory system.
MSDS Creation Date: 9/02/1997 Revision #7 Date: 3/18/2003

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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