Basic information
- CAS
10213-79-3- Standard SMILES
O.O.O.O.O.O=[Si]([O-])[O-].[Na+].[Na+]- InChIKey
ADPGKKZKGXANON-UHFFFAOYSA-N- Molecular formula
- H10Na2O8Si
- Average molar mass
- 212.14 g/mol
- Monoisotopic mass
- 211.99403237
Overview
See also: Disodium dioxido(oxo)silane pentahydrate (annotation moved to).
Names & identifiers
- Preferred name
- Silicic acid (H2SiO3), disodium salt, pentahydrate
- IUPAC
- disodium;dioxido(oxo)silane;pentahydrate
- English name
- SODIUM METASILICATE PENTAHYDRATE
- Molecular formula
- H5NaO4Si
- Molecular weight
- 120.11
Names & synonyms
Sodium metasilicate pentahydrateSilicic acid (H2SiO3), disodium salt, pentahydrateSilicic acid, disodium salt, pentahydrateDTXSID0029717DISODIUM METASILICATE PENTAHYDRATERefChem:885447DTXCID40971710213-79-3disodium;dioxido(oxo)silane;pentahydrateMFCD00149176H10Na2O8SiSCHEMBL123472
Show more names
metsogranulardrymetakeiso5aqdorimetakeiso5aqSodiumsilicatehydrateSODIUM SILICATE, PENTAHYDRATESodiumMestasilicatePentahydrateSodium metasilicate pentehydratesodiumsilicatehydrate(na2sio3.5h2o)
SODIUM METASILICATE 5H2OAKOS015913813FS76799NS00113262Sodium oxosilanebis(olate)--water (2/1/5)Sodium metasilicate pentahydrate, >=95.0% (T)F098683disodium;bis(oxidanidyl)-oxidanylidene-silane;pentahydrate
Database identifiers
- CAS
10213-79-3
Properties
Computed structural properties
- Topological polar surface area
- 68.2 Ų
- Hydrogen bond donors
- 5
- Hydrogen bond acceptors
- 8
- Rotatable bonds
- 0
- Heavy atoms
- 11
- Formal charge
- 0
- Complexity
- 18.8
Experimental & physicochemical properties
Chemical ClassesOther Classes -> Salts, Basic
Physical Description
Dry Powder; Liquid; Dry Powder; CBI
Crystalline powder; [Reference #1] White solid; [Sigma-Aldrich MSDS]
Physicochemical properties
- Melting point
- 1088 °C · 1088°C
- Density
- 2.61 · 2.61
- refractive index
- 1.52 · 1.52
- storage temp.
- Store at room temperature
- form
- Solid
- color
- White
- PH
- 12 · 12,5 (in aqueous solution: 10 g /l , 20 °C)
- Odor
- odourless
- Water Solubility
- Soluble in cold water.
- Merck
- 14 · 14,8642
- InChI
- 1S/2Na.O3Si.5H2O/c;;1-4(2)3;;;;;/h;;;5*1H2/q2*+1;-2;;;;;
- InChIKey
- ADPGKKZKGXANON-UHFFFAOYSA-N
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
Danger
H302: Harmful if swallowed [Warning Acute toxicity, oral]
P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P308+P316, P316, P317, P321, P330, P363, P405, and P501 (click each P-code to see the statement)
Hazard information
Regulatory Information
Silicic acid (H2SiO3), disodium salt, pentahydrate is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid (H2SiO3), disodium salt, pentahydrate 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)
Sodium metasilicate, pentahydrate: Does not have an individual approval but may be used under an appropriate group standard
Hazards Summary
Corrosive to moistened rabbit skin; Sodium metasilicate was not sensitizing in a local lymph node assay study of mice; Similar uses and adverse effects are expected from the hydrous and anhydrous forms (Sodium metasilicate pentahydrate, Sodium metasilicate nonahydrate, Sodium metasilicate, Sodium silicate, and Potassium silicate). One case of occupational contact urticaria reported from sodium silicate; [OECD SIDS: Soluble Silicates - 2004] Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; Harmful by ingestion; [Sigma-Aldrich MSDS] See Sodium metasilicate.
EPA Safer ChemicalChemical: Silicic acid, disodium salt, pentahydrate
Hazard Classes and CategoriesAcute toxicity (Oral) - Category 4
Safety & protection
Chemistry & industry
Uses & manufacturing
Uses
Permitted for use as an inert ingredient in non-food pesticide products; [EPA] Alkali metal silicates are used as starting materials for products like silicas and zeolites, in detergents and cleaners, and pulp and paper production; Also used to a lesser extent in soil stabilization and sealing, adhesives and binders (construction materials, paperboard and cardboard, ceramic binders, refractories, welding rods, and foundry molds and cores), surface coatings (titanium dioxide production, paints for masonry and glass, and spray coatings for tunnel construction and mining), water/wastewater treatment, enhanced oil recovery, and textile processing (bleach and dye stabilizing); [OECD SIDS: Soluble Silicates - 2004] Generally regarded as safe (GRAS) by the FDA for use in fruit and vegetable washes, sanitizers for food-contact surfaces, and other indirect food contact uses; [NTP]
Molding and Core Making [Category: Foundry]
U.S. Production2023: 250,000 - <400,000 lb
Consumer UsesNot Known or Reasonably Ascertainable
Industry UsesNot Known or Reasonably Ascertainable
Household ProductsInformation on 33 consumer products that contain Sodium metasilicate pentahydrate in the following categories is provided:
Use Classification
EPA Safer Chemical Functional Use Classes -> Processing Aids and Additives
Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern
General Manufacturing InformationAdhesive Manufacturing
Applications
UsesSodium Metasilicate Pentahydrate is used in method for preparing cement accelerator containing Aluminum Sulfate.
Related reactions
8 records
Compound notes
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