Basic information
- CAS
13870-28-5- Standard SMILES
O=[Si]([O-])O[Si](=O)[O-].[Na+].[Na+]- InChIKey
OQEVSCYDUYRAAM-UHFFFAOYSA-N- Molecular formula
- Na2O5Si2
- Average molar mass
- 182.15 g/mol
- Monoisotopic mass
- 181.90796473
Names & identifiers
- Preferred name
- Disodium disilicate
- IUPAC
- disodium;oxido-[oxido(oxo)silyl]oxy-oxosilane
- English name
- SODIUM DISILICATE N-HYDRATE
- Molecular formula
- H3NaO5Si2
- Molecular weight
- 162.18
Names & synonyms
Disodium disilicatesodium disilicate13870-28-5PURIFEEDW64N8HUI60SILICATE DHOLLISIL 26BRITESIL H 20 PLUSUNII-W64N8HUI60Silicic acid (H2Si2O5), sodium salt (1:2)DTXSID50891889EC 237-623-4
Show more names
SODIUM NITRITDinatriumdisilikatSilicic acid (H2Si2O5), disodium saltSilicic acid (H2Si2O5),sodium salt (1:2)SODIUM DISILICATE N-HYDRATE ISO 9001：2015 REACH
EINECS 237-623-4SODIUM SILICON OXIDE (NA2SI2O5)SODIO DISILICATORefChem:135034DISILICATO DI DISODIODTXCID501031439disodium;oxido-[oxido(oxo)silyl]oxy-oxosilanesodium disilicate n-hydrate
Database identifiers
- CAS
13870-28-5- PubChem CID
- 61699
- DTXSID
DTXSID50891889- UNII
- W64N8HUI60
- EC Number
- 237-623-4
Properties
Computed structural properties
- Topological polar surface area
- 89.5 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 5
- Rotatable bonds
- 0
- Heavy atoms
- 9
- Formal charge
- 0
- Complexity
- 71.2
Experimental & physicochemical properties
Chemical ClassesMetals -> Metals, Inorganic Compounds
Physical Description
Dry Powder; Other Solid
White powder or lumps; [BDH Laboratory Supplies MSDS]
Physicochemical properties
- Density
- 2.43 · 2.43[at 20℃]
- Water Solubility
- 700 g/L · 700g/L at 20℃
- FDA UNII
- 64 N8HUI60 · W64N8HUI60
- EPA Substance Registry System
- Disodium disilicate (13870-28-5)
- Symbol(GHS)
- 5 · GHS05
- Signal word
- Danger
- Hazard statements
- 318 · H318
- Precautionary statements
- 280 · P280-P305+P351+P338-P310
- RIDADR
- 1759 · 1759
- TSCA
- TSCA listed
- HazardClass
- 8 · 8
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
H318 (98.8%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
P264+P265, P280, P305+P354+P338, and P317 (click each P-code to see the statement)
Aggregated GHS information provided per 173 reports by companies from 3 notifications to the ECHA C&L Inventory.
Danger
H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
Hazard information
Regulatory Information
Chemical: Silicic acid (H2Si2O5), disodium salt
Silicic acid (H2Si2O5), sodium salt (1:2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid (H2Si2O5), sodium 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)
REACH registered substance: Disodium disilicate (EC: 237-623-4)
Disodium disilicate: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationIMAP assessments - Soluble silicates: Human health tier II assessment
Hazards Summary
May cause serious eye injury; [ECHA REACH Registrations] Causes burns; Inhalation can cause severe respiratory tract irritation; [BDH Laboratory Supplies MSDS] See Tetrasodium orthosilicate. See Sodium metasilicate pentahydrate, Sodium metasilicate, and Sodium silicate.
EPA Safer ChemicalChemical: Disodium disilicate
Hazard Classes and Categories
Eye Dam. 1 (98.8%)
Chemistry & industry
Uses & manufacturing
UsesUsed in industrial processing and in consumer washing-cleaning products and water softeners; [ECHA REACH Registrations] Permitted for use as an inert ingredient in non-food pesticide products; [EPA]
U.S. Production2023: 62,311 lb
Consumer UsesSurfactant (surface active agent)
Industry UsesAbrasives
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 Information
Soap, Cleaning Compound, and Toilet Preparation Manufacturing
Silicic acid (H2Si2O5), sodium salt (1:2): ACTIVE
Suppliers21 total
山东泰诚生物科技有限公司18769832557 18769832557 · [email protected]
杭州品高化工有限公司0571-87658025 · [email protected]
苏州市森菲达化工有限公司18796480002 18796480002 · [email protected]
深圳市思美泉生物科技有限公司17683743113;18038040196 · [email protected]
Cangzhou Wanyou New Material Technology Co.,Ltd18631714998 · [email protected]
湖北广奥生物科技有限公司027-02702759223056 18162699093 · [email protected]
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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