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Heptamethyldisilazane(920-68-3)

Heptamethyldisilazane(920-68-3)
Product IdentificationBack to Contents
【Product Name】

Heptamethyldisilazane
【Synonyms】

N,1,1,1-Tetramethyl-N-(trimethylsilyl)silylamine
N,N-Bis(trimethylsilyl)methanamine
【CAS】

920-68-3
【Formula】

C7H21NSi2
【Molecular Weight】

175.42
【EINECS】

213-061-5
【Beilstein/Gmelin】

2321949
Physical and Chemical PropertiesBack to Contents
【Appearance】

Clear, colorless.
【Boiling Point】

148
【Density】

0.79 g/cm3
【Refractive Index】

1.42 (20 C)
First Aid MeasuresBack to Contents
【Ingestion】

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
【Inhalation】

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
【Skin】

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
【Eyes】

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Handling and StorageBack to Contents
【Storage】

Keep away from heat, sparks, and flame. Flammables-area.
【Handling】

Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Hazards IdentificationBack to Contents
【Ingestion】

May cause toxic effects.
【Inhalation】

Vapors may cause dizziness or suffocation. May cause toxic effects.
【Skin】

Contact with substance may cause severe burns.
【Eyes】

See Skin.
【Hazards】

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
【EC Risk Phrase】

R 10 34
【EC Safety Phrase】

S 26 36/37/39 45
【UN (DOT)】

2924
Exposure Controls/Personal ProtectionBack to Contents
【Personal Protection】

Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
【Respirators】

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Fire Fighting MeasuresBack to Contents
【Flash Point】

27
【Fire Fighting】

Small Fires: Dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Large Fires: Water spray, fog or alcohol-resistant foam.
【Fire Potential】

Flammable/combustible material. May be ignited by heat, sparks or flames.
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment.
Stability and ReactivityBack to Contents
【Stability】

Stable under normal temperatures and pressures.
【Incompatibilities】

Strong oxidizing agents.
【Decomposition】

Irritating and toxic fumes and gases.
【Combustion Products】

Fire will produce irritating, corrosive and/or toxic gases.
Transport InformationBack to Contents
【UN Number】

2924
【Hazard Class】

3
【Packing Group】

I; II; III
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