=====================  Product Identification  =====================

MSDS NAME:DOW CORNING OS-20
NIIN:01-412-0041
Status Code:A
MSDS Number: CLGYJ
=== Responsible Party ===
Company:DOW CORNING CORPORATION
Address:3901 S SAGINAW RD
Box:997
City:MIDLAND
State:MI
ZIP:48640
Country:US
Info Phone Num:517-496-6000
Emergency Phone Num:517-496-5900/517.496.6315
Resp. Party Other MSDS Num.:02800501
Chemtrec Ind/Phone:(800)424-9300
CAGE:5D028
=== Contractor Identification ===
Company:DOW CORNING CORP
Address:3901 S SAGINAW RD
Box:997
City:MIDLAND
State:MI
ZIP:48686-0997
Country:US
Phone:517-496-6000/517-496-6315
CAGE:5D028
Company:MCKEOWN ROBERT CO. INC.
Address:111 CHAMBERS BROOK RD.
Box:City:SOMERVILLE
State:NJ
ZIP:08876
Country:US
Phone:908-218-9000
Contract Num:SP0450-01-M-ZE64
CAGE:7B953

=============  Composition/Information on Ingredients  =============

Name:OCTAMETHYLTRISILOXANE
CAS:107-51-7
> Wt:60.
Other REC Limits:TWA 200 PPM DOW

=====================  Hazards Identification  =====================

Health Hazards Acute and Chronic:ACUTE: EYE-DIRECT CONTACT MAY CAUSE
    TEMPORARY REDNESS & DISCOMFORT. SKIN-NO SIGNIFIGANT IRRITATION
    EXPECTED FROM A SINGLE SHORT-TERM EXPOSURE.  INHALE-NO SIGNIFICANT
    EFFECTS EXPECTED FROM A SINGLE SHO RT-TERM EXPOSURE. VAPOR
    OVEREXPOSURE MAY CAUSE DROWSINESS. ORAL-LOW INGESTION HAZARD IN
    NORMAL USE. SWALLOWING LARGE AMOUNTS MAY CAUSE DROWSINESS. CHRONIC:
    SKIN-REPEATED CONTACT MAY CAUSE DEFATTING &  DRYING, WHICH MAY
    RESULT IN SKIN IRRITATION & DERMATITIS. REPEATED CONTACT MAY CAUSE
    DEFATTING & DRYING OG SKIN WHICH MAY RESULT IN SKIN IRRITATION &
    DERMATITIS. INHALATION-NO KNOWN APPLICABLE INFORMA TION. ORAL-MAY
    INJURE INTERNALLY.
Effects of Overexposure:NO KNOWN APPLICABLE INFORMATION.
Medical Cond Aggravated by Exposure:NO KNOWN APPLICABLE INFORMATION.

=======================  First Aid Measures  =======================

Eyes: IMMEDIATELY FLUSH WITH WATER.  SKIN: REMOVE FROM SKIN
    AND WASH THOROUGHLY WITH SOAP AND  WATER OR WATERLESS CLEANSER. GET
    MEDICAL ATTENTION IF IRRITATION OR OTHER ILL EFFECTS DEVELOP OR
    PERSIST. INHALATION: REMOVE TO FRESH AIR. GET MDICL ATTENTION IF
    ILL EFFECTS PERSIST.  ORAL: GET MEDICAL ATTENTION. COMMENTS: TREAT
    ACCORDING TO PERSON'S CONDITION AND SPECIFIES OF EXPOSURE.

=====================  Fire Fighting Measures  =====================

Flash Point Method:CC
Flash Point:=34.4C, 93.9F
Autoignition Temp:=350.C, 662.F
Lower Limits:0.9
Upper Limits:13.8
Extinguishing Media:LARGE FIRES USE MEDIUM EXPANSION (>30.1) AFFF,
    ALCOHOL COMPATIBLE FOAM, WATER SPRAY. ON SMALL FIRES USE MEDIUM
    EXPANSION(>30.1) AFFF, ALCHOL COMPATIBLE FOAM, CO2 OR WATER SPRAY.
Fire Fighting Procedures:SELF-CONTAINED BREATHING APPARATUS AND
    PROTECTIVE CLOTHING SHOULD BE WORN IN FIGHTING LARGE FIRES
    INVOLVING CHEMICALS.  EVACUATE AREA IN CASE OF OVERHEATING OR FIRE.
    USE WATER SPRAY TO KEEP FIRE EXPOS ED CONTAINERS COOL. WATER CAN BE
    USED TO COOL FIRE EXPOSED CONTAINERS.
Unusual Fire/Explosion Hazard:FIRE BURNS MORE VIGOROUSLY THAN WOULD BE
    EXPECTED. VAPORS ARE HEAVIER THAN AIR & MAY TRAVEL TO A SOURCE OF
    IGNITION & FLASHBACK. STATIC ELECTRICITY WILL ACCUMULATE & MAY
    IGINITE VAPORS. PREVENT A POSS IBLE FIRE HAZARD BY BONDING &
    GROUNDING OR INERT GAS PURGE.

==================  Accidental Release Measures  ==================

Spill Release Procedures:REMOVE POSSIBLE IGNITION SOURCES. DISPOSE OF
    SATURATED ABSORBANT OR CLEANING MATERIAL APPROPIATELY, SINCE
    SPONTANEOUS HEATING MAY OCCUR. DETERMINE WHETHER TO EVACUATE OR
    ISOLATE THE AREA ACCORDING TO  YOUR LOCAL EMERGENCY PLAN. CLEANUP
    REMAINING MATERIALS FROM SPILL WITH SUITABLE ABSORBANT. "SEE OTHER
    INFO"

======================	Handling and Storage  ======================

Handling and Storage Precautions:USE WITH A DEQUATE VENTILATION. AVOID
    BREATHING VAPOR. KEEP CONTAINER CLOSED. AVOID EYE & SKIN CONTACT.
    DO NOT TAKE INTERNALLY. STATIC ELECTRICITY WILL ACCUMULATE & MAY
    IGNITE VAPORS. PREVENT A POSSIB LE FIRE HAZARD BY BONDING &
    GROUNDING OR INERT GAS PURGE. KEEP AWAY FROM HEAT, SPARKS,	&
    FLAME.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:ORGANIC VAPOR TYPE.
Ventilation:LOCAL EXHAUST: RECOMMENDED. GENERAL VENTILATION:
    RECOMMENDED.
Protective Gloves:SILVER SHIELD?. 4H?. NITRILE RUBBER.
Eye Protection:USE PROPER PROTECTION-SAFETY GLASSES AS A MINIMUM.
Other Protective Equipment:CHEMICAL PROTECTIVE GLOVES RECOMMENEDED.
Work Hygienic Practices:WASH AT MEALTIME & END OF SHIFT. CONTAIMINATED
    CLOTHING & SHOES SHOULD BE REMOVED AS SOON AS PRACTICAL & THROUGHLY
    CLEANED BEFORE REUSE.
Supplemental Safety and Health
GENERIC DESCRIPTION: METHYL SILOXANE. MSDS NO.: 02800501. NFPA PROFILE:
    HEALTH=1, FLAMMABILITY=3, REACTIVITY=0. NOTE: NFPA=NATIONAL FIRE
    PROTECTION ASSOCIATION.

==================  Physical/Chemical Properties  ==================

HCC:F3
NRC/State Lic Num:NOT RELEVANT
Boiling Pt:B.P. Text:NOT AVAILABLE
Melt/Freeze Pt:=-82.C, -115.6F
Vapor Pres:0.45 KPA @25 C
Vapor Density:1.04
Spec Gravity:0.81
Viscosity:1.00 CST
Solubility in Water:NOT DETERMINED
Appearance and Odor:COLORLESS LIQUID - SLIGHT ODOR
Percent Volatiles by Volume:100

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
OXIDIZING MATERIALS CAN CAUSE A REACTION.
Stability Condition to Avoid:NONE.
Hazardous Decomposition Products:THERMAL BREAKDOWN OF THIS PRODUCT
    DURING FIRE OR VERY HIGH HEAT CONDITIONS MAY EVOLVE THE FOLLOWING
    THE FOLLOWING HAZARDOUS DECOMPOSITION PRODUCTS: SILICONE DIOXIDE,
    FORMALDEHYDE.

===================  Toxicological Information	===================

Toxicological Information:ACUTE TOXICOLOGY DATA FOR PRODUCT: COMPLETE
    INFORMATION IS NOT YET AVAILABLE. COMPONENT TOXICOLOGY: NO KNOWN
    APPLICABLE INFORMATION. SPECIAL HAZARD INFORMATION ON COMPONENTS.

=====================  Ecological Information  =====================

Ecological:ENVIRONMENTAL FATE AND DISTRIBUTION: NO SPECIFIC INFORMATION
    IS AVAILABLE.  ECOTOXICITY: NO SPECIFIC INFORMATION IS AVAILABLE.
    PERSISTENCE AND DEGRADATION: NO SPECIFIC INFORMATION AVAILABLE.

====================  Disposal Considerations  ====================

Waste Disposal Methods:WHEN A DECISION IS MADE TO DISCARD THIS
    MATERIAL, AS RECEIVED, IS IT LASSIFIED AS A HAZARDOUS WASTE? Y.
    FEDERAL HAZARDOUS WASTE CODE: NA. CHARACTERISTIC WASTE: IGNITABLE:
    D001. CORROSIVE: NA. REACTIVE : NA. TCLP: NA. STATE OR LOCAL LAWS
    MAY IMPOSE ADDITIONAL REGULATORY REQUIREMENTS REGARDING DISPOSAL .
    NA=NOT APPLICABLE. CALL DOW CORPORATION.

===================  MSDS Transport Information  ===================

Transport Information:DOT ROAD SHIPMENT INFORMATION (49 CFR 172.101).
    PROPER SHIPPING NAME: FLAMMABLE LIQUID, NOS. HAZARD TECHNICAL NAME:
    OCTAMETHYLTRISILOXANE. HAZARD CLASS: 3. UN/NA NUMBER: UN1993.
    PACKING GROUP: III. 00 00 AND NA=NOT APPLICABLE. CALL DOW CORNING
    TRANSPORTATION 517-496-8577, IF ADDITIONAL INFORMATION IS REQUIRED.

=====================  Regulatory Information  =====================

SARA Title III Information:SECTION 302 EXTREMELY HAZARDOUS SUBSTANCE.
    NONE. SECTION 304 HAZARDOUS SUBSTANCES: NONE. SECTION 312 HAZARD
    CLASS: ACUTE: YES; CHRONIC: NO; FIRE: YES; PRESSURE: NO;
    REACTIVITY: NO. SECTION 313 TOXIC C HEMICALS: NONE PRESENT OR NONE
    PRESENT IN REGULATED QUANTITIES.
Federal Regulatory Information:TSCA STATUS: ALL CHEMICAL SUBSTANCES IN
    THIS MATERIALO ARE INCLUDED ON OR EXEMPT FROM LISTING ON THE TSCA
    INVENTORY OF CHEMICAL SUBSTANCES.
State Regulatory Information:CALIFORNIA PROPOSITION 65: NONE.
    MASSACHUSETTS RIGHT-TO-KNOW: NO INGREDIENT REGULATED BY MA RTK
    PRESENT. NEW JERSEY: 000107517, > 60, OCTAMETHYLTRISILOXANE. 
    PENNSYLVANIA: 000107517, > 60, OCTAMETHYLT RISILOXANE.

=======================  Other Information  =======================

 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.

*** END OF RECORD ***