Silicones

**Definition:** A broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed)

**Tree numbers:** - D02.756.650.700 - D05.750.900.850 - D25.720.900.850 - J01.637.051.720.900.850

**Synonyms:** - Silicone