murphySodium Silicate
AKA: Waterglass, Sodium siliconate, Sodium sesquisilicate, Sodium silicate glass, Sodium water glass, Britesil, Carsil, Dryseq, Sikalon
Synthetic
Not Clean
OriginSodium silicate is produced by fusing silica sand with sodium carbonate or sodium hydroxide at high temperatures. The resulting compound is then dissolved in water to create a clear alkaline solution for cosmetic use.
The Expert Panel for Cosmetic Ingredient Safety concluded that the following 24 silicate ingredients are safe in cosmetics in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating, with the exception that the available data are insufficient to make a determination of safety for the use of naturally-sourced (i.e., mined) silicate ingredients in products that may be incidentally inhaled: Sodium Metasilicate.
Solubility VERY SOL IN COLD & HOT WATER; SOLUBLE IN DILUTE SODIUM HYDROXIDE; INSOLUBLE IN ALCOHOL, ACIDS /NONAHYDRATE/
Formula
Na2O3Si
Mol. Weight
122.06
CAS #
1344-09-8
Form
Powder
State
Sodium silicate appears as a powdered or flaked solid substance. Strong irritant to skin, eyes, and mucous membranes. May be toxic by ingestion. Concentrated aqueous solutions used as a glue.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Anticorrosive
Buffering
Prevents Corrosion
Stabilizes pH
Anti-Aging Benefits
Antioxidant Protection
Locks In Moisture
Prevents product degradation
Maintains optimal pH
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 335)
Mixed Eye Irritation Results
4 studies / 2 irritating / 1 mixed / 1 not irritating / reactions severe (CIR 335 and 808)
Mixed Skin Irritation Results
11 studies / 8 irritating / 1 mixed / 2 not irritating / reactions mild to corrosive (CIR 335 and 808)
Concentration Guide
Leave-onNot reported
Rinse-off0.017–35%
0%50%100%
CIR reported use · 2018 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR