Dimethyl Siloxane (PDMS)
- Silicones
- CAS 63148-62-9
- IUPAC: poly(dimethylsiloxane), trimethylsiloxy-terminated
Polydimethylsiloxane (PDMS) is an organosilicon polymer widely used as a lubricant, gloss enhancer, and water-repellent in car care products. It is not a VOC and not classified as PFAS (organosilicon ≠ organofluorine). Aquatic ecotoxicity data are limited but PDMS is generally considered low hazard at normal use concentrations. Not biodegradable in the traditional sense (does not break down via microbial action), but is not bioaccumulative and not classified as persistent organic pollutant.
Health & environment profile
- VOC
- no
- Prop 65 listed
- no
- Asthmagen
- no
- EPA Safer Choice
- no
- Aquatic toxicity
- no
- Biodegradable
- no
- Bioaccumulative
- no
- Persistent
- no
- Ozone depleting
- no
- Microplastic
- no
- PFAS
- no
- Env. score
- 5/5
9 products contain this
Adam's Polishes Graphene Tire DressingProp 65tire-dressing
Armor All Extreme Tire Shine Geltire-dressing
Black Magic Tire Wet Geltire-dressing
Chemical Guys Speed Wipe Quick Detailerquick-detailer
Chemical Guys VRP Vinyl, Rubber, Plastic DressingProp 65tire-dressing
Griot's Garage Black Shine Tire & Trim Coatingtire-dressing
Meguiar's Endurance Tire GelProp 65tire-dressing
Meguiar's Gold Class Rich Leather Cleaner & ConditionerProp 65leather-cleaner
Mothers Back-to-Black High-Gloss Tire Shinetire-dressing
Health summaries are editorial — we synthesize from SDSs, peer-reviewed sources, and regulatory listings. Not medical advice.