murphyPotassium Silicate
AKA: Potassium water glass, Kasil, Kasil 6, Pyramid 120, 1312-76-1, Potassium orthosilicate, Anhydrous, Tetrapotassium;silicate, Pyramid K-84
Synthetic
Not Clean
OriginPotassium silicate is produced from silicon dioxide and potassium compounds, typically through high-temperature fusion or alkali treatment. The resulting compound is synthesized by reacting silica with potassium hydroxide or potassium carbonate at elevated temperatures.
Silicic acid, potassium salt
Solubility SOL IN COLD & HOT WATER; INSOL ALC /META & TETRASILICATE/
Formula
K4O4Si
Mol. Weight
248.48
CAS #
1312-76-1
Form
Powder
State
Dry Powder, Liquid; Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Anticorrosive
Prevents Corrosion
Anti-Aging Benefits
Antioxidant Protection
Locks In Moisture
Prevents product degradation
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
1 study / 1 not sensitizing (CIR 808)
Mixed Eye Irritation Results
3 studies / 1 mixed / 2 not irritating / reactions slight (CIR 335 and 808)
Mixed Skin Irritation Results
3 studies / 1 irritating / 1 mixed / 1 not irritating / reactions mild (CIR 335 and 808)
Concentration Guide
CIR's newest survey reports no concentration of use.
CIR · 2018 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR