M.S.D.S. 0301
Material Safety Data Sheet
City University of Hong Kong
MSDS DIMETHYLDICHLOROSILANE 0301
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PRODUCT INFORMATION
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Chemical Family/Use: Methylchlorosilanes
Chinese Name:
Formula: Me 2SiCl 2
CAS No.: 75-78-5
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RISK SYMBOL
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PHYSICAL DATA
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Boiling Point : 70 (掳C)
Vapor Pressure(20掳C)(mm Hg): 115
Vapor Density (Air=1) : 4.5
Freezing Point : Unk (掳C)
City University of Hong Kong 1
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
Melting Point : -76.1 (掳C)
Physical State : Liquid
Odor : Sharp,HCl Odor
Color : Colorless
Odor Threshold (ppm) : 10.0
% Volatile By Volume : 100
Evap. Rate(Butyl Acetate=1): >1
Specific Gravity (Water=1) : 1.07
Density (kg/m3) : 1066
Acid/Alkalinity (Meq/G) : Unk
pH : <7
Voc (EPA Meth.24) (g/l) : Nt
Solubility In Water (20掳C) : Reacts
Solubility In Organic Solvent (State Solvent): Unknown
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FIRE AND EXPLOSION DATA
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Flash Point: -16 (掳C)
Method : Pmcc
Ignition Temp : 463 (掳C)
Flammable Limits In Air - Lower (%):5.5
Flammable Limits In Air - Upper (%):10.4
Sensitivity To Mechanical Impact (Y/N): No
Sensitivity To Static Discharge:
Sensitivity to static discharge is expected; material has a flash point below 200 掳F.
Extinguishing Media:
Carbon dioxide
Dry chemical
Sodium chloride
Foam
Special Firefighting Procedures:
Do not use water because of violent reaction.
Extremely flammable.
Corrosive material.
Wear respiratory protection if in a confined area.
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REACTIVITY DATA
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Stability: Stable
Hazardous Polymerization: Will not occur
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
M.S.D.S. 0301
Hazardous Thermal Decomposition/Combustion Products:
Silicon dioxide.
Hydrogen chloride.
Incompatibility (Materials To Avoid):
Water can cause violent reaction.
Avoid contact with acidic,basic or oxidizing agents.
Conditions To Avoid:
Keep away from any contact with water.
Do not allow water to get into container because of violent reaction.
Keep away from heat,sparks and flame.
Avoid any source of ignition.
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HEALTH HAZARD DATA
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Ingestion:
Harmful if swallowed.
Causes burns of the mouth,throat and stomach
Skin Contact:
Causes severe skin irritation with tissue destruction.
Causes severe burns.
Inhalation:
Irritating vapor causes immediate distress.
Causes severe respiratory irritation.
Causes irritation of the mouth,nose,and throat.
Harmful if inhaled.
Eye Contact:
Causes severe eye irritation will damage tissue
Causes severe eye burns.
Vapor and/or liquid causes irritation.
Medical Conditions Aggravated: Respiratory
Subchronic (Target Organ) Effects: None known.
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The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
Chronic Effects/Carcinogenicity:
This product or one of its ingredients present 0.1% or more is not listed as a carcinogen or suspected
carcinogen by NTP, IARC, or OSHA.
Products/Ingredients : This space reserved for special use.
Principle Routes Of Exposure:
Oral.
Dermal - skin.
Eyes.
Inhalation.
Other: None known.
Acute Oral LD50 (mg/kg): 1000 mg/kg LDLO
Acute Dermal LD50 (mg/kg): not found
Acute Inhalation LC50 (mg/l): 2340 ppm/1hr(Rat)
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FIRST AID MEASURES
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Ingestion:
Do not induce vomiting. Slowly dilute with 1-2 glasses of water or milk and seek medical attention.
Never give any- thing by mouth to an unconscious person.
Skin:
In case of contact, immediately flush skin with plenty of soap and water for at least 15 minutes. Get
medical attention. Remove contaminated shoes and discard.
Inhalation:
If inhaled, remove to fresh air, if not breathing give artifi- cial respiration, preferably mouth-to mouth. If
breathing is difficult give oxygen. Get medical attention.
Eyes:
In case of contact, or suspected contact, immediately flush eyes with plenty of water for at least 15
minutes and get medical attention immediately after flushing.
Note To Physician: None known.
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
M.S.D.S. 0301
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PREVENTATIVE MEASURES
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Engineering Controls:
Exhaust ventilation
Showers.
Eyewash stations.
Use in a well ventilated area.
Respiratory Protection:
Use in a well ventilated area.
Wear self-contained breathing apparatus.
Protective Gloves:
Rubber gloves.
Use Viton or 4H gloves.
Eye And Face Protection:
Safety glasses.
Monogoggles.
Face shield.
Other Protective Equipment:
Rubber raincoat.
Rubber overcoat.
Wear eye protection and protective clothing.
Ventilation:
Use only in well ventilated area.
Mechanical ventilation.
Precautions To Be Taken In Handling And Storage:
Use ground strap.
Use inert gas blanket.
Recommended storage in original container below 30掳C (85掳F).
Keep container closed when not in use.
Avoid breathing vapors, if exposed to high vapor concentration,
leave area at once.
Avoid contact with skin and eyes.
Open container cautiously.
Use only in a well ventilated area.
Danger] Corrosive.
Danger] Extremely flammable.
City University of Hong Kong 5
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
Keep dry.
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ENVIRONMENTAL PROTECTION DATA
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Action To Be Taken If Material Is Released Or Spilled:
Wipe, scrape or soak up in an inert material and put in a container for disposal. Wear proper protective
equipment as specified in the protective equipment section. Remove sources of ignition. Warn other
workers of spill. Increase area ventilation.
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
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