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Silicates, borates and other salts

Dicalcium silicate

Also known as Silicic acid (H4SiO4), calcium salt (1:2), dicalcium, silicate, dicalcium orthosilicate

CAS 10034-77-2Formula Ca2O4SiMolar mass 172.24 g/molEC 215-710-8
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Dicalcium silicate chemical structure, Ca2O4Si, CAS 10034-77-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
10034-77-2
Formula
Ca2O4Si
Molar mass
172.24 g/mol
Physical form
Crystals
HS code
283990
Category
Silicates, borates and other salts
Illustrative photo, 25 kg white woven sacks of powder on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Dicalcium silicate?

Plain description, key identifiers and synonyms

Dicalcium silicate is a chemical substance with the molecular formula Ca2O4Si and a molar mass of 172.24 g/mol. Its CAS registry number is 10034-77-2. The IUPAC name is dicalcium, silicate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dicalcium, silicate
CAS number
10034-77-2 CAS number cross-checkedOther or deprecated CAS: 1344-95-2
EC numbers
215-710-8, 233-107-8
Molecular formula
Ca2O4Si
UNII
9W3UX8K5UQ, S4255P4G5M
MDL number
MFCD00015979
InChIKey
JHLNERQLKQQLRZ-UHFFFAOYSA-N
InChI
InChI=1S/2Ca.O4Si/c;;1-5(2,3)4/q2*+2;-4
SMILES (canonical and isomeric)
[O-][Si]([O-])([O-])[O-].[Ca+2].[Ca+2]

Synonyms

  • Silicic acid (H4SiO4), calcium salt (1:2)
  • dicalcium, silicate
  • dicalcium orthosilicate
  • Calcium silicate
  • Calcium silicate (NF)
  • Calcium silicate, synthetic
  • Ca2O4Si

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Crystalsexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
172.24 g/molcalc.
Exact mass
171.8818 Dacalc.
LogP (octanol/water)
-5.9calc.
Topological polar surface area
92.24 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Dicalcium silicate suppliers

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Where suppliers are based

40 suppliers in 1 country

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Dicalcium silicate price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Other, Binder, Intermediate, Adhesion/cohesion promoter, Sealant (barrier), Flux agent.

Consumer uses: Adhesion/cohesion promoter, Hardener, Intermediate, Fixing agent (mordant), Other, Binder.

Roles

  • additive
  • antacid
  • anticaking agent
  • flame retardant
  • food additive
  • food anticaking agent
  • food component
  • pharmaceutical
  • physiological role

Functional uses

  • Binder

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Dicalcium silicate is traded under.

HS 2839.90Indicative HS code

Silicates, commercial alkali metal silicates, other

World exports in 2024
$241M
−2.7% vs 2023, imports $307M
2019 to 2024
Top exporters
  1. China20.4%
  2. United States17.9%
  3. Netherlands11.7%
Top importers
  1. Saudi Arabia13.5%
  2. Germany8.3%
  3. United States7.3%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Dicalcium silicate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dicalcium silicate, based on the data on this page

What is Dicalcium silicate?

Dicalcium silicate is a chemical substance with the molecular formula Ca2O4Si and a molar mass of 172.24 g/mol. Its CAS registry number is 10034-77-2. The IUPAC name is dicalcium, silicate.

What is the CAS number of Dicalcium silicate?

The CAS registry number of Dicalcium silicate is 10034-77-2. Other or deprecated CAS numbers: 1344-95-2.

What is the molecular formula and weight of Dicalcium silicate?

The molecular formula of Dicalcium silicate is Ca2O4Si and its molar mass is 172.24 g/mol.

What is Dicalcium silicate used for?

Industrial uses: Other, Binder, Intermediate, Adhesion/cohesion promoter, Sealant (barrier), Flux agent. Consumer uses: Adhesion/cohesion promoter, Hardener, Intermediate, Fixing agent (mordant), Other, Binder.

Is Dicalcium silicate hazardous?

No GHS hazard classification for Dicalcium silicate is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Dicalcium silicate?

Dicalcium silicate is usually classified under HS code 283990 (Silicates, commercial alkali metal silicates, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dicalcium silicate?

CompoundList lists 40 suppliers of Dicalcium silicate in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Dicalcium silicate?

Suppliers quote Dicalcium silicate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Dicalcium silicate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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