At a Glance
Material Family
Acids & Salts
Record Type
Acid
Primary Role
Synthesis Intermediate · pH Adjustment
Solubility
Miscible / soluble in water at low concentration; condenses to silica gel above ~2 mmol/L (typical)
Functional Roles
Industries Served
Applications & Use Cases
- ▸ Supplied as a stabilized liquid concentrate for agriculture, where it delivers bioavailable monomeric silicon as a foliar spray or fertigation additive to strengthen plant cell walls and support abiotic and biotic stress tolerance.
- ▸ Used as a silicon precursor in sol-gel chemistry and silica synthesis, condensing to amorphous silica networks for coatings, binders, and ceramic or refractory applications.
- ▸ Functions as a silica source in coatings and construction chemistry for surface densification and consolidation treatments on mineral substrates.
- ▸ Incorporated at low levels into cosmetic and personal-care formulations as a source of soluble silicon for hair, skin, and nail benefit positioning.
- ▸ Serves as a laboratory and process reagent for studying silica polymerization, biomineralization, and silicon uptake in plant and analytical research.
Physical Properties
Appearance
Clear to slightly opalescent liquid concentrate (stabilized); pure monomer is a white solid (typical)
Molecular Weight
96.11 g/mol
Physical State
Liquid concentrate (commercial stabilized grade); solid for pure compound (typical)
Solubility
Miscible / soluble in water at low concentration; condenses to silica gel above ~2 mmol/L (typical)
pH
Acidic in stabilized concentrate form (typical)
Safety & Handling
Full SDS available on request
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →
Chemical Identity
CAS Number
10193-36-9
Molecular Formula
H4O4Si
Molecular Weight
96.11 g/mol
IUPAC Name
silicic acid
PubChem CID
InChI Key
RMAQACBXLXPBSY-UHFFFAOYSA-N
Synonyms & Trade Names
Full Description
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 233-477-0
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
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Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.