DOW CORNING CORPORATION
Material Safety Data Sheet
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DOW CORNING(R) TC-5600 THERMALLY CONDUCTIVE COMPOUND
1. PRODUCT AND COMPANY IDENTIFICATION
24 Hour Emergency Telephone:
Customer Service:
Product Disposal Information:
CHEMTREC:Dow Corning Corporation
South Saginaw Road
Midland, Michigan 48686

MSDS No.: 04078268(989) 496-5900(989) 496-6000(989) 496-6315(800) 424-9300

Revision Date: 2009/02/11

Generic Description:
Physical Form:Color:
Odor:

Silicone compound
Viscous LiquidGrey.
Odorless

NFPA Profile: Health0 Flammability

1 Instability/Reactivity0

Note: NFPA = National Fire Protection Association

2. HAZARDS IDENTIFICATIONPOTENTIAL HEALTH EFFECTS
Acute Effects
Eye:

No significant irritation expected from a single exposure.

Skin:

No significant irritation expected from a single short-term exposure.

Inhalation:

No significant effects expected from a single short-term exposure.

Oral:

Low ingestion hazard in normal use.

Prolonged/Repeated Exposure Effects
Skin:

No known applicable information.

Inhalation:

No known applicable information.

Oral:

No known applicable information.

Signs and Symptoms of Overexposure
No known applicable information.
Medical Conditions Aggravated by Exposure
No known applicable information.
The above listed potential effects of overexposure are based on actual data, results of studies performed upon similar compositions,

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DOW CORNING(R) TC-5600 THERMALLY CONDUCTIVE COMPOUND
component data and/or expert review of the product. Please refer to Section 11 for the detailed toxicology information.

3. COMPOSITION/INFORMATION ON INGREDIENTSCAS Number681-84-5

Wt %Component Name

<0.1

Tetramethoxysilane

The above components are hazardous as defined in 29 CFR 1910.1200.

4. FIRST AID MEASURES
Eye:

Immediately flush with water.

Skin:

No first aid should be needed.

Inhalation:

No first aid should be needed.

Oral:

No first aid should be needed.

Notes to Physician:Treat according to person's condition and specifics of exposure.

5. FIRE FIGHTING MEASURES
Flash Point:

509 °F / 265 °C (Seta Closed Cup)

Autoignition Temperature:

Not determined.

Flammability Limits in Air:

Not determined.

Extinguishing Media:

On large fires use dry chemical, foam or water spray. On small fires use carbon dioxide(CO2), dry chemical or water spray. Water can be used to cool fire exposed containers.

Fire Fighting Measures:

Self-contained breathing apparatus and protective clothing should be worn in fighting large
fires involving chemicals. Determine the need to evacuate or isolate the area according to
your local emergency plan. Use water spray to keep fire exposed containers cool.

Unusual Fire Hazards:

None.

6. ACCIDENTAL RELEASE MEASURESDOW CORNING CORPORATION
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Containment/Clean up:

Determine whether to evacuate or isolate the area according to your local emergency plan.
Observe all personal protection equipment recommendations described in Sections 5 and 8.
For large spills, provide diking or other appropriate containment to keep material fromspreading. If diked material can be pumped, store recovered material in appropriatecontainer. Clean up remaining materials from spill with suitable absorbant. Clean area as
appropriate since spilled materials, even in small quantities, may present a slip hazard. Finalcleaning may require use of steam, solvents or detergents. Dispose of saturated absorbant or
cleaning materials appropriately, since spontaneous heating may occur. Local, state andfederal laws and regulations may apply to releases and disposal of this material, as well as
those materials and items employed in the cleanup of releases. You will need to determine
which federal, state and local laws and regulations are applicable. Sections 13 and 15 of thisMSDS provide information regarding certain federal and state requirements.

Note: See section 8 for Personal Protective Equipment for Spills. Call (989) 496-5900, if additional information isrequired.

7. HANDLING AND STORAGE
Use with adequate ventilation. Traces of benzene (carcinogen) may form if heated in air above 300 F (149 C). Provideventilation to control vapor exposure within inhalation guidelines when handling at elevated temperatures. Review theOSHA benzene regulation for detailed information on safe handling requirements. Product contains a highly toxiccomponent. Provide engineering controls to ensure exposure levels are controlled.
Use reasonable care and store away from oxidizing materials.

8. EXPOSURE CONTROLS / PERSONAL PROTECTION
Component Exposure Limits
CAS Number

Component NameExposure Limits

681-84-5

Tetramethoxysilane

ACGIH TLV: TWA 1 ppm.

Engineering Controls
Local Ventilation:
General Ventilation:

Recommended.
Recommended.

Personal Protective Equipment for Routine Handling
Eyes:

Use proper protection - safety glasses as a minimum.

Skin:

Washing at mealtime and end of shift is adequate.

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Suitable Gloves:Handle in accordance with good industrial hygiene and safety practices.

Inhalation:

No respiratory protection should be needed.

Suitable Respirator:

None should be needed.

Personal Protective Equipment for Spills
Eyes:

Use proper protection - safety glasses as a minimum.

Skin:

Washing at mealtime and end of shift is adequate.

Inhalation/Suitable
Respirator:

No respiratory protection should be needed.

Precautionary Measures:

Use reasonable care.

Comments:

Traces of benzene (carcinogen) may form if heated in air above 300 F (149 C). Provide
ventilation to control vapor exposure within inhalation guidelines when handling at elevatedtemperatures. Review the OSHA benzene regulation for detailed information on safe
handling requirements. Product contains a highly toxic component. Provide engineering
controls to ensure exposure levels are controlled.

Note: These precautions are for room temperature handling. Use at elevated temperature or aerosol/spray applications may require
added precautions. For further information regarding aerosol inhalation toxicity, please refer to the guidance document regarding theuse of silicone-based materials in aerosol applications that has been developed by the silicone industry (www.SEHSC.com) or contact
the Dow Corning customer service group.

9. PHYSICAL AND CHEMICAL PROPERTIES
Physical Form:Color:
Odor:
Specific Gravity @ 25°C:
Viscosity:

Viscous Liquid
Grey.
Odorless
2.74
85,000 mPa s

Freezing/Melting Point: Not determined.
Boiling Point: > 200 °C
Vapor Pressure @ 25°C: Not determined.
Vapor Density: Not determined.
Solubility in Water: Not determined.
pH: Not determined.
Volatile Content:
Flash Point: 509 °F / 265 °C (Seta Closed Cup)
Autoignition Temperature: Not determined.
Flammability Limits in Air: Not determined.
Note: The above information is not intended for use in preparing product specifications. Contact Dow Corning before writing

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specifications.

10. STABILITY AND REACTIVITY
Chemical Stability:Stable.

Hazardous
Polymerization:
Conditions to Avoid:

Hazardous polymerization will not occur.

Materials to Avoid:

Oxidizing material can cause a reaction.

None.

Hazardous Decomposition Products
Thermal breakdown of this product during fire or very high heat conditions may evolve the following decomposition
products: Carbon oxides and traces of incompletely burned carbon compounds. Silicon dioxide. Formaldehyde.
Hydrogen. Metal oxides. Zinc oxide fumes.

11. TOXICOLOGICAL INFORMATION
Component Toxicology Information
Product contains tetramethoxysilane which is highly toxic by inhalation. The 4 hour LC50 in rats is 63 ppm. Severe eye
injury ranging from eye pain to blindness and eye loss has resulted from occupational exposure to tetramethoxysilane.
Exposure to air concentrations of 200 to 300 ppm for 15 minutes can induce minimal eye lesions and exposure at 1000
ppm can produce corneal damage.

Special Hazard Information on Components
No known applicable information.

12. ECOLOGICAL INFORMATION
Environmental Fate and Distribution
Complete information is not yet available.
Environmental Effects
Complete information is not yet available.
Fate and Effects in Waste Water Treatment Plants
Complete information is not yet available.

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Hazard Parameters (LC50 or EC50)
Acute Aquatic Toxicity (mg/L)
Acute Terrestrial Toxicity

Ecotoxicity Classification CriteriaHigh
Medium<=1>1 and <=100<=100>100 and <= 2000

Low>100>2000

This table is adapted from "Environmental Toxicology and Risk Assessment", ASTM STP 1179, p.34, 1993.
This table can be used to classify the ecotoxicity of this product when ecotoxicity data is listed above. Please read the other information presented in thesection concerning the overall ecological safety of this material.

13. DISPOSAL CONSIDERATIONSRCRA Hazard Class (40 CFR 261)
When a decision is made to discard this material, as received, is it classified as a hazardous waste? No
State or local laws may impose additional regulatory requirements regarding disposal.Call (989) 496-6315, if additional
information is required.
14. TRANSPORT INFORMATIONDOT Road Shipment Information (49 CFR 172.101)
Not subject to DOT.
Ocean Shipment (IMDG)
Not subject to IMDG code.
Air Shipment (IATA)
Not subject to IATA regulations.
Call Dow Corning Transportation, (989) 496-8577, if additional information is required.

15. REGULATORY INFORMATION
Contents of this MSDS comply with the OSHA Hazard Communication Standard 29 CFR 1910.1200.
TSCA Status:

All chemical substances in this material are included on or exempted from listing on the TSCA
Inventory of Chemical Substances.

EPA SARA Title III Chemical Listings
Section 302 Extremely Hazardous Substances (40 CFR 355):
None.
Section 304 CERCLA Hazardous Substances (40 CFR 302):

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DOW CORNING(R) TC-5600 THERMALLY CONDUCTIVE COMPOUND
None.

Section 311/312 Hazard Class (40 CFR 370):
Acute: No
Chronic: No
Fire: No
Pressure: No
Reactive: No
Section 313 Toxic Chemicals (40 CFR 372):
None present or none present in regulated quantities.
Note: Chemicals are listed under the 313 Toxic Chemicals section only if they meet or exceed a reporting threshold.

Supplemental State Compliance Information
California
Warning: This product contains the following chemical(s) listed by the State of California under the Safe Drinking Water
and Toxic Enforcement Act of 1986 (Proposition 65) as being known to cause cancer, birth defects or otherreproductive harm.
None known.
Massachusetts
No ingredient regulated by MA Right-to-Know Law present.
New Jersey
CAS Number

Wt %Component NameNJ TSRN
14962700-700
4P
NJ TSRN
14962700-700
3P471277-16-4> 60.0Treated filler

15.0 - 40.0

Zinc oxide

3.0 - 7.0

Dimethyl siloxane, dimethylvinylsiloxy and trimethoxysiloxy-terminated63148-52-7

1.0 - 5.0

Dimethyl, phenylmethyl siloxane, trimethyl-terminatedWt %Component Name

Pennsylvania
CAS Number

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Trade Secret> 60.0Treated filler

Trade Secret15.0 - 40.0

Zinc oxide

471277-16-4

3.0 - 7.0

Dimethyl siloxane, dimethylvinylsiloxy and trimethoxysiloxy-terminated

16. OTHER INFORMATION
Prepared by: Dow Corning Corporation
These data are offered in good faith as typical values and not as product specifications. No warranty, either expressed or
implied, is hereby made. The recommended industrial hygiene and safe handling procedures are believed to be generallyapplicable. However, each user should review these recommendations in the specific context of the intended use anddetermine whether they are appropriate.
(R) indicates Registered Trademark