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MSDS 
:
 1,3-Dichloro-1,1,3,3-tetramethyldisiloxane, 96%
CAS 
:
 2401-73-2
SYNONYMS 
:
 None.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 2401-73-2 |1,3-Dichloro-1,1,3,3-tetramethyldisilo| 96 | 219-278-1 |
| |xane | | |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: F C
Risk Phrases: 11 34

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

EMERGENCY OVERVIEW
Highly flammable. Causes burns.Moisture sensitive.

Potential Health Effects
Eye:
Causes eye burns.
Skin:
Causes skin burns.
Ingestion:
Causes gastrointestinal tract burns. May cause kidney damage. May
cause central nervous system effects. Ingestion of large amounts may
cause CNS depression. May cause systemic effects. May cause cardiac
effects such as heart blocks, arrhythmias, shock and possible death
due to cardiovascular collapse.
Inhalation:
Causes chemical burns to the respiratory tract. Inhalation may be
fatal as a result of spasm, inflammation, edema of the larynx and
bronchi, chemical pneumonitis and pulmonary edema. May cause kidney
damage. Aspiration may lead to pulmonary edema. Vapors may cause
dizziness or suffocation. May cause systemic effects. May cause
burning sensation, coughing, wheezing, laryngitis, shortness of
breath, headache, nausea, and vomiting. Inhalation at high
concentrations may cause CNS depression and asphixiation. May cause
burning sensation in the chest. May cause cardiac effects such as
tachyardia and shock.
Chronic:
Effects may be delayed. May cause kidney damage.

**** 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:
Never give anything by mouth to an unconscious person. Get medical
aid immediately. Do NOT induce vomiting. If conscious and alert,
rinse mouth and drink 2-4 cupfuls of milk or water.
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:
Treat symptomatically and supportively.

**** 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. Combustion
generates toxic fumes. During a fire, irritating and highly toxic
gases may be generated by thermal decomposition or combustion. Will
burn if involved in a fire. Use water spray to keep fire-exposed
containers cool. Containers may explode in the heat of a fire.
Flammable liquid and vapor. Containers may explode if exposed to
fire.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or
alcohol-resistant foam. For large fires, use water spray, fog, or
alcohol-resistant foam. Use water spray to cool fire-exposed
containers. Water may be ineffective. Do NOT get water inside
containers. Do NOT use straight streams of water.

**** 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:
Ground and bond containers when transferring material. Use
spark-proof tools and explosion proof equipment. 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. Use only in a chemical fume hood. 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 sources of ignition. Keep container closed when not
in use. Store in a tightly closed container. Flammables-area. Store
protected from moisture. Store under an inert atmosphere.

**** 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# 2401-73-2:


Personal Protective Equipment

Eyes:
Wear chemical splash goggles.
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: Liquid
Color: clear, colorless
Odor: acrid odor
pH: Not available.
Vapor Pressure: 8 mm Hg @ 25 deg C
Viscosity: Not available.
Boiling Point: 138 deg C @ 760 mm Hg
Freezing/Melting Point: -37 deg C
Autoignition Temperature: Not available.
Flash Point: 15 deg C ( 59.00 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Reacts.
Specific Gravity/Density: 1.03 g/ml
Molecular Formula: C4H12Cl2OSi2
Molecular Weight: 203.22

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

Chemical Stability:
Stable. May decompose on exposure to moist air or water. This
product rapidly hydrolyzes to form hydrochloric acid.
Conditions to Avoid:
Ignition sources, moisture, excess heat.
Incompatibilities with Other Materials:
Oxidizing agents, acids, bases, moisture.
Hazardous Decomposition Products:
Hydrogen chloride, carbon monoxide, carbon dioxide, silicon dioxide.
Hazardous Polymerization: Will not occur.

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

RTECS#:
CAS# 2401-73-2 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
1,3-Dichloro-1,1,3,3-tetramethyldisiloxane -
Not listed by ACGIH, IARC, or NTP.

**** 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
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

**** 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 34 Causes burns.
Safety Phrases:
S 9 Keep container in a well-ventilated place.
S 16 Keep away from sources of ignition - No
smoking.
S 25 Avoid contact with eyes.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 2401-73-2: No information available.
Canada
CAS# 2401-73-2 is listed on Canada's NDSL List.
CAS# 2401-73-2 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 2401-73-2 is listed on the TSCA inventory.

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

MSDS Creation Date: 1/25/2000 Revision #7 Date: 9/08/2004

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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