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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 66200Generated: October 23, 2026

Silicic acid (H2SiO3), potassium salt (1:2)

Dikaliumsilicat · dipotassium silicate · Dipotassium metasilicate · Silicic acid,dipotassium salt · Silicic acid, dipotassium salt · dipotassium,dioxido(oxo)silane · Metasilicic acid dipotassium salt · Silicic acid (H2SiO3), dipotassium salt

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Silicic acid (H2SiO3), potassium salt (1:2) molecular structure

Identifiers & Physical Properties

CAS No.10006-28-7
Molecular formulaK2.Si.O3
Average molar mass154.28 g/mol
Monoisotopic mass153.88908375 g/mol
SMILESO=[Si]([O-])[O-].[K+].[K+]
InChIKeyNNHHDJVEYQHLHG-UHFFFAOYSA-N
PubChem CID66200
EC No.233-001-1
DTXSIDDTXSID20893092

Chemical & Physical Properties

Topological polar surface area63.2
Hydrogen bond donors0
Hydrogen bond acceptors3
Rotatable bonds0
Heavy atoms6
Formal charge0
Complexity18.8
Physical DescriptionLiquid
StabilityStable.
EPA Substance Registry SystemSilicic acid (H2SiO3), dipotassium salt (10006-28-7)
Signal wordDanger
GHS hazard statementsH335-H314
GHS precautionary statementsP260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501
TSCA inventory statusTSCA listed

Safety & Regulations

GHS classificationDangerH314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]P260, P261, P264, P271, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P319, P321, P363, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 39 reports by companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
Regulatory informationChemical: Silicic acid (H2SiO3), dipotassium saltSilicic acid (H2SiO3), potassium salt (1:2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid (H2SiO3), potassium salt (1:2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Silicic acid (H2SiO3), dipotassium salt: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Other safety informationIMAP assessments - Soluble silicates: Human health tier II assessment
Hazard Classes and CategoriesSkin corrosion - category 1
Protective Action Criteria (PAC)3.5 [mg/m3]38 [mg/m3]230 [mg/m3]
TSCA inventory statusTSCA listed
Signal wordDanger
GHS hazard statementsH335-H314
GHS precautionary statementsP260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501