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Hazard Predictions

• Flammable: Reaction products may be flammable
• Generates gas: Reaction liberates gaseous products and may cause pressurization

Tetramethyldisiloxane can be hydrolyzed by aqueous sodium hydroxide solution, generating flammable hydrogen gas. If this reaction occurs under pressure (in a closed system, for example) a violent explosion can occur, especially in the presence of oxygen and an ignition source. Siloxanes with no Si-H bonds, such as hexamethyldisiloxane, cannot produce hydrogen by hydrolysis, and are therefore not expected to be hazardous under these conditions (Anon., Jahresberichte, 1983, 71-72; Plewinsky, B. et al., Thermochim. Acta, 1985, 94, 33-42).

Potential Gas Byproducts

• Hydrogen (H2)