Dicalcium silicate
Basic information
- CAS
10034-77-2- Standard SMILES
[Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-]- InChIKey
JHLNERQLKQQLRZ-UHFFFAOYSA-N- Molecular formula
- Ca2O4Si
- Average molar mass
- 172.24 g/mol
- Monoisotopic mass
- 171.88176697
Names & identifiers
- Preferred name
- Dicalcium silicate
- IUPAC
- dicalcium;silicate
- English name
- dicalcium silicate
- Molecular formula
- Ca2O6Si2
- Molecular weight
- 232.3234
Names & synonyms
Dicalcium silicate9W3UX8K5UQDTXSID5049570RefChem:920062DTXCID8029529233-107-810034-77-2Silicic acid (H4SiO4), calcium salt (1:2)dicalcium;silicatedicalcium orthosilicateCalcium silicate [NF]MFCD00015979
Show more names
Calcium silicate (NF)HSDB 705EINECS 215-710-8Calcium silicate, syntheticUNII-S4255P4G5MCa2O4SiEC 215-710-8SCHEMBL3578
Database identifiers
- CAS
10034-77-2、1344-95-2- PubChem CID
- 14941
- DTXSID
DTXSID5049570- UNII
- 9W3UX8K5UQ
- EC Number
- 233-107-8
Properties
Computed structural properties
- Topological polar surface area
- 92.2 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 0
- Heavy atoms
- 7
- Formal charge
- 0
- Complexity
- 19.1
Experimental & physicochemical properties
Chemical ClassesMetals -> Metals, Inorganic Compounds
Physical Description
Large Crystals; CBI; Dry Powder; Other Solid
Colorless, cream, or white odorless powder and pieces; [Materion Advanced Chemicals MSDS]
Physicochemical properties
- InChI
- InChI=1S/2Ca.2O3Si/c;;2*1-4(2)3/q2*+2;2*-2
- InChIKey
- GGDIOEDJZLBCGA-UHFFFAOYSA-N
- SMILES
- [Ca+2].[Ca+2].[Si]([O-])([O-])=O.[Si]([O-])([O-])=O
- FDA UNII
- 9 W3UX8K5UQ · 9W3UX8K5UQ
- EPA Substance Registry System
- Silicic acid (H4SiO4), calcium salt (1:2) (10034-77-2)
- TSCA
- TSCA listed
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Hazard information
Regulatory Information
Chemical: Silicic acid (H4SiO4), calcium salt (1:2)
Silicic acid (H4SiO4), calcium salt (1:2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid (H4SiO4), calcium 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)
Dicalcium silicate: 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 - Silicic acid (H4SiO4), calcium salt (1:2): Human health tier I assessment
Hazards SummaryMay cause mild irritation; Skin or eye contact may cause itching and redness; Chronic inhalation exposure may cause lung injury; [Materion Advanced Chemicals MSDS] See Calcium silicate. See Tricalcium silicate.
Safety data
- tsca
- TSCA listed
Chemistry & industry
Uses & manufacturing
U.S. Production2023: 25,000,000,000 - <30,000,000,000 lb
Consumer UsesAdhesion/cohesion promoter
Industry UsesOther
Household ProductsInformation on 11 consumer products that contain Dicalcium silicate in the following categories is provided:
General Manufacturing Information
Oil and Gas Drilling, Extraction, and Support activities
Silicic acid (H4SiO4), calcium salt (1:2): ACTIVE
Applications
General DescriptionDicalcium silicate occurs when cement clinker is not completely saturated with calcium oxide. Pure dicalcium silicate melts congruently at 2130 ℃. In lime-rich raw mixes, C2S forms already at temperatures below 1000 ℃ by solid-state reaction. During the sintering process in the presence of a melt above 1250 ℃, C2S incorporates additional Ca2+, resulting in the formation of C3S.
Related reactions
21 records
Compound notes
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