Skip to content
CarCareTruthProducts · Ranked

Polyurea Silazane

  • Ceramic (SiO₂)
  • CAS 2649792-57-2
  • IUPAC: Polyurea silazane (CAS 2649792-57-2)

Polyurea Silazane (CAS 2649792-57-2) appears in 3 of the 1,812 car-care products CarCareTruth tracks (as of June 2026).

Classified with H318 (Serious Eye Damage Cat 1) and H315 (Skin Irritation Cat 2) in US GHS SDS formulations where it appears at 5–30%. Chemical splash goggles are required when handling products containing polyurea silazane at concentrations that drive H318 at the mixture level. Skin contact should be avoided with chemical-resistant gloves. Not a respiratory sensitizer (no H334), not carcinogenic at current classification.

Polyurea silazane (CAS 2649792-57-2) is an alkoxysilane-derived polymer that functions as the active ceramic precursor in premium wipe-on ceramic and graphene-ceramic coatings. On contact with atmospheric moisture it undergoes hydrolysis and cross-linking to form a dense, hard silica-like network bonded to the paint surface — the mechanism that produces ceramic hardness and long-term hydrophobicity.

In professional and enthusiast wipe-on ceramic formulations it typically appears at 5–30% concentration, where it drives serious eye damage classification (H318) at the product level. Products with polyurea silazane as the active ingredient require full-seal chemical splash goggles during application — standard safety glasses do not provide adequate splash protection against H318 materials.

The cured film is chemically inert and environmentally benign; the hazard is associated with the uncured liquid precursor during application, not the finished coating on the vehicle.

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
Purpose: Active ceramic precursor; cross-links on contact with atmospheric moisture to form a hard, hydrophobic SiO₂-like film on paint surfaces

Common questions about Polyurea Silazane

What is Polyurea Silazane used for in car care?
Active ceramic precursor; cross-links on contact with atmospheric moisture to form a hard, hydrophobic SiO₂-like film on paint surfaces
Is Polyurea Silazane a VOC?
No. Polyurea Silazane is not classified as a volatile organic compound (VOC).
Is Polyurea Silazane on California's Proposition 65 list?
No. Polyurea Silazane is not on California's Proposition 65 list.

3 products contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.