| Item Name | |
| Part Number/Trade Name | OS-20; METHYL SILOXANE |
| National Stock Number | 6850014120041 |
| CAGE Code | 5D028 |
| Part Number Indicator | A |
| MSDS Number | 183880 |
| HAZ Code | B |
| Manufacturer Name | DOW CORNING CORPORATION |
| P.O. Box | N/K |
| Street | 3901 SOUTH SAGINAW ROAD |
| City | MIDLAND |
| State | MI |
| Country | US |
| Zip Code | 48686-5601 |
| Emergency Phone | 517-496-6000/517-496-5900 |
| Information Phone | 517-496-5813/517-496-8577 |
| Street | 3901 SOUTH SAGINAW ROAD |
| City | MIDLAND |
| State | MI |
| Zip Code | 48686-5601 |
| Date MSDS Prepared/Revised | 15JUL98 |
| Date of Technical Review | 13DEC94 |
| Active Indicator | N |
| Hazard Storage Compatibility Code | NR |
| NRC License Number | NR |
| Net Propellant Weight (Ammo) | NR |
| Appearance/Odor | COLORLESS LIQUID/SLIGHT ODOR |
| Boiling Point | NR` |
| Melting Point | 115.60F |
| Vapor Pressure | 3.88 |
| Vapor Density | NR |
| Specific Gravity | 0.81 |
| Decomposition Temperature | NR |
| Evaporation Rate | NR |
| Solubility in Water | NR |
| Percent Volatiles by Volume | 100 |
| Chemical pH | NR |
| Corrosion Rate | NR |
| Container Type | F |
| Container Pressure Code | 1 |
| Temperature Code | 4 |
| Product State Code | L |
| Flash Point Method | UNK |
| Lower Explosion Limit | 0.9 |
| Upper Explosion Limit | 13.8 |
| Extinguishing Media | ON LARGE FIRES, USE ALCOHOL COMPATIBLE FOAM OR WATER SPRAY. ON SMALL FIRES USE MEDIUM EXPANSION, ALCOHOL COMPATIBLE FOA |
| Special Fire Fighting Procedures | SCBA, WEAR FULL PROTECTIVE CLOTHING |
| Unusual Fire/Explosion Hazards | FIRE BURNS MORE VIGOROUSLY THAN WOULD BE EXPECTED. VAPORS ARE HEAVIER THAN AIR AND MAY TRAVEL TO A SOURCE OF IGNITION AND FLASH BACK |
| Stability | YES |
| Stability Conditions to Avoid | NONE |
| Materials to Avoid | OXIDIZING MATERIAL CAN CAUSE A REACTION |
| Hazardous Decomposition Products | NR |
| Hazardous Polymerization | NO |
| Polymerization Conditions to Avoid | WILL NOT OCCUR |
| Route of Entry: Skin | YES |
| Route of Entry: Ingestion | YES |
| Route of Entry: Inhalation | YES |
| Health Hazards - Acute and Chronic | [EYES] REDNESS, DISCOMFORT [SKIN] NO SIGNIFICANT IRRITATION FROM A SINGLE SHORT-TERM EXPOSURE [INHAL] NO SIGNIFICANT EFFECTS FROM A SINGLE SHORT-TERM EXPOSURE [INGEST] LOW INGEST HAZARD IN NORMAL USE, SWALLOWING LARGE AMOUNTS MAY CAUSE DROWSINESS |
| Carcinogenity: NTP | NR |
| Carcinogenity: IARC | NR |
| Carcinogenity: OSHA | NR |
| Explanation of Carcinogenity | NR |
| Symptoms of Overexposure | NO KNOWN APPLICABLE INFORMATION |
| Medical Cond. Aggrevated by Exposure | NONE KNOWN |
| Emergency/First Aid Procedures | [EYE] IMMED FLUSH W/ WATER [SKIN] REMOVE FROM SKIN AND WASH W/ SOAP AND WATER, GET DR [INHAL] REMOVE TO FRESH AIR, GET DR [INGEST] GET MEDICAL ATTENTION |
| Steps if Material Released/Spilled | REMOVE POSSIBLE IGNITION SOURCES, DISPOSE OF SATURATED ABSORBENT OR CLEANING MATERIALS APPROPRIATELY, SINCE SPONTANEOUS HEATING MAY OCCUR. DETERMINE WHETHER TO EVACUATE OR ISOLATE THE AREA. LARGE SPILLS: DIKE, PUMP, STORE RECOVERED MATERIAL IN APPROP CONTAINER |
| Neutralizing Agent | NR |
| Waste Disposal Method | DISPOSE IAW FEDERAL, STATE, LOCAL REGULATIONS |
| Handling and Storage Precautions | KEEP CONTAINERS CLOSED |
| Other Precautions | NR |
| Respiratory Protection | USE RESPIRATORY PROTECTION UNLESS ADEQUATE LOCAL EXHAUST VENTILATION IS PROVIDED OR AIR SAMPLING DATA SHOW EXPOSURE ARE WITHIN RECOMMENDED EXPOSURE GUIDELINES |
| Ventilation | LOCAL: RECOMMENDED GENERAL: RECOMMENDED |
| Protective Gloves | CHEMICAL GLOVES |
| Eye Protection | SAFETY GLASSES AS A MINIMUM |
| Other Protective Equipment | NR |
| Work Hygenic Practices | WASH HANDS AFTER USE |
| Supplemental Health/Safety Data | NR |
| Disposal Code | O |
| Protect Eye | YES |
| Protect Skin | YES |
| Protect Respiratory | YES |
| Chronic Indicator | UNKNOWN |
| Contact Code | SLIGHT |
| Fire Code | UNKNOWN |
| Health Code | UNKNOWN |
| React Code | UNKNOWN |
| Container Quantity | 30 |
| Unit of Measure | LB |
| Volatile Organic Compounds (P/G) | 0 |
| Volatile Organic Compounds (G/L) | 0 |
| Ingredient # | 01 |
| Ingredient Name | OCTAMETHYLTRISILOXANE (>60%) |
| CAS Number | 107517 |
| NIOSH Number | 1012055OE |
| Proprietary | NO |
| Percent | 60 |
| OSHA PEL | N/K |
| ACGIH TLV | N/K |
| Recommended Limit | 200 PPM TWA |