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MSDS 
:
 N,O-Bis(trimethylsilyl)acetamide
CAS 
:
 10416-59-8
SYNONYMS 
:
 Bis(trimethylsilyl)acetamide; BSA; Ethanimidic acid,     N-(trimethylsilyl)-, trimethylsilyl ester;     N-(Trimethylsilyl)acetimidic acid, trimethylsilyl ester.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 10416-59-8 |N,O-Bis(trimethylsilyl)acetamide | >90 | 233-892-7 |
|----------------|--------------------------------------|----------|-----------|
| 13435-12-6 |N-(Trimethylsilyl)acetamide | <10 | 236-565-7 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: C
Risk Phrases: 10 14 22 34

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

EMERGENCY OVERVIEW
Flammable. Reacts violently with water. Harmful if swallowed. Causes
burns.

Potential Health Effects
Eye:
Causes eye burns.
Skin:
Causes skin burns.
Ingestion:
Causes gastrointestinal tract burns. May be harmful if swallowed.
Inhalation:
Causes chemical burns to the respiratory tract.
Chronic:
Chronic exposure may cause effects similar to those of acute
exposure.

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

Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with plenty of water for
at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. Never give
anything by mouth to an unconscious person.
Inhalation:
If inhaled, remove to fresh air. 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:
Containers can build up pressure if exposed to heat and/or fire. As
in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. 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. Water Reactive.
Material will react with water and may release a flammable and/or
toxic gas. Use water spray to keep fire-exposed containers cool.
Vapors may be heavier than air. They can spread along the ground and
collect in low or confined areas. May be ignited by heat, sparks, and
flame.
Extinguishing Media:
Use dry sand or earth to smother fire. Use dry chemical. 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 expose spill to water. A vapor suppressing foam may be used to
reduce vapors.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Ground and bond containers when transferring material. Use
spark-proof tools and explosion proof equipment. 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. 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. Use only with adequate ventilation. Keep away from heat,
sparks and flame.
Storage:
Keep away from heat, sparks, and flame. Keep container closed when
not in use. Store in a tightly closed container. Keep away from
water. Refrigerator/flammables. Store protected from moisture.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or
utilizing this material should be equipped with an eyewash facility
and a safety shower. Use adequate ventilation to keep airborne
concentrations low.
Exposure Limits
CAS# 10416-59-8:
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
CAS# 13435-12-6:
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 chemical splash goggles and face shield.
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 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Solid or liquid
Color: colorless to slight yellow
Odor: characteristic odor
pH: Not available.
Vapor Pressure: 7.5 mm Hg @ 50 deg C
Viscosity: Not available.
Boiling Point: 71-73 deg C @ 35 mm Hg
Freezing/Melting Point: 24 deg C
Autoignition Temperature: Not available.
Flash Point: 42 deg C ( 107.60 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: >80 deg C
Solubility in water: decomposes
Specific Gravity/Density: .8200 g/cm3
Molecular Formula: C8H21NOSi2
Molecular Weight: 203.43

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

Chemical Stability:
Reacts with water.
Conditions to Avoid:
Ignition sources, excess heat, exposure to moist air or water.
Incompatibilities with Other Materials:
Water, strong oxidizing agents, acids.
Hazardous Decomposition Products:
Nitrogen oxides, carbon monoxide, carbon dioxide, acetonitrile,
silicon dioxide.
Hazardous Polymerization: Has not been reported.

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

RTECS#:
CAS# 10416-59-8: AK3000000
CAS# 13435-12-6: AD0250000
LD50/LC50:
Not available.
Not available.
Oral rat LD50 1580 mg/kg.
Carcinogenicity:
N,O-Bis(trimethylsilyl)acetamide -
Not listed by ACGIH, IARC, or NTP.
N-(Trimethylsilyl)acetamide -
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: CORROSIVE LIQUID, FLAMMABLE, N.O.S.*
Hazard Class: 8 (3)
UN Number: 2920
Packing Group: II
IMO
Shipping Name: CORROSIVE LIQUID, FLAMMABLE, N.O.S.
Hazard Class: 8 (3)
UN Number: 2920
Packing Group: II
RID/ADR
Shipping Name: CORROSIVE LIQUID, FLAMMABLE, N.O.S.
Hazard Class: 8
UN Number: 2920
Packing group: II

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

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 10 Flammable.
R 14 Reacts violently with water.
R 22 Harmful if swallowed.
R 34 Causes burns.
Safety Phrases:
S 7/8 Keep container tightly closed and dry.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 30 Never add water to this product.
S 36 Wear suitable protective clothing.
S 43A In case of fire, use dry chemical (never use
water).
WGK (Water Danger/Protection)
CAS# 10416-59-8: 1
CAS# 13435-12-6: No information available.
Canada
CAS# 10416-59-8 is listed on Canada's NDSL List.
CAS# 13435-12-6 is listed on Canada's DSL List.
CAS# 10416-59-8 is not listed on Canada's Ingredient Disclosure List.
CAS# 13435-12-6 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 10416-59-8 is listed on the TSCA inventory.
CAS# 13435-12-6 is listed on the TSCA inventory.

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

Text for R-phrases from Section 2
MSDS Creation Date: 8/18/1998 Revision #8 Date: 11/24/2003

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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