Tin Oxide

AKA: Tin oxide (SnO2), CI 77861, C.I. 77861, Stannoxyl, Putty powder, Polishing powder, Tin ash, Nanotek tin oxide
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Synthetic
Not Clean
OriginDerived from tin ore (cassiterite) through mining and mineral extraction processes. Produced by oxidizing tin metal at high temperatures or through chemical precipitation methods.
Tin(iv) oxide appears as white or off-white crystalline solid or powder. mp: 1127 °C, Sublimes: 1800-1900 °C, density: 6.95 g/cm3 Insoluble in water. Soluble in concentrated sulfuric acid, hydrochloric acid. Occurs in nature as the mineral cassiterite. Used as a catalyst, in putty, as a polishing powder for steel and glass, in ceramic glazes and colors. "Flowers of tin" refers to the material collected as the result of condensation after sublimation.
Solubility Insoluble (NIOSH, 2024)
Formula
O2Sn
Mol. Weight
150.71
CAS #
18282-10-5
Form
Powder
State
Tin(iv) oxide appears as white or off-white crystalline solid or powder. mp: 1127 °C, Sublimes: 1800-1900 °C, density: 6.95 g/cm3 Insoluble in water. Soluble in concentrated sulfuric acid, hydrochlori
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Abrasive
Bulking
Opacifying
Viscosity Controlling
Physical Exfoliant
Adds Body & Volume
Adds Opacity
Controls Viscosity
Reduces Inflammation
Gently polishes surface
Adds volume
Creates creamy opacity
Controls product thickness
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Eye Irritant
2 studies / 2 not irritating (CIR 620)
Not a Skin Irritant
4 studies / 4 not irritating (CIR 620)
Not a Sensitizer
4 studies / 4 not sensitizing (CIR 620)
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR