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Disodium silicate

Also known as Silicic acid (H2SiO3), sodium salt, sodium, dioxido(oxo)silane

CAS 15457-97-3Formula NaO3Si-Molar mass 99.07 g/molEC 239-476-1
Disodium silicate chemical structure, NaO3Si-, CAS 15457-97-3
2D chemical structure

Key facts

What buyers check first

CAS number
15457-97-3
Formula
NaO3Si-
Molar mass
99.07 g/mol
EC number
239-476-1
HS code
283919
Category
Silicates, borates and other salts

What is Disodium silicate?

Plain description, key identifiers and synonyms

Disodium silicate is a chemical substance with the molecular formula NaO3Si- and a molar mass of 99.07 g/mol. Its CAS registry number is 15457-97-3. The IUPAC name is sodium dioxido(oxo)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sodium dioxido(oxo)silane
CAS number
15457-97-3Other or deprecated CAS: 15915-98-7
EC number
239-476-1
Molecular formula
NaO3Si-
InChIKey
PVRGLAMGMYQDTQ-UHFFFAOYSA-N
InChI
InChI=1S/Na.O3Si/c;1-4(2)3/q+1;-2
SMILES (canonical and isomeric)
[O-][Si](=O)[O-].[Na+]

Synonyms

  • Silicic acid (H2SiO3), sodium salt
  • sodium, dioxido(oxo)silane

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
99.07 g/molcalc.
Exact mass
98.952 Dacalc.
LogP (octanol/water)
-5.87calc.
Topological polar surface area
63.19 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
-1calc.
Stereocentres
0calc.
Components
2calc.

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.

Disodium silicate suppliers

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Disodium silicate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2839.19Indicative HS code

Silicates of sodium (excluding sodium metasilicates)

World exports in 2024
$453M
−8.6% vs 2023, imports $424M
2019 to 2024
Top exporters
  1. Poland16.1%
  2. China14.2%
  3. Netherlands11.3%
Top importers
  1. United States9.2%
  2. South Korea8.6%
  3. Germany7.3%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Disodium silicate?

Disodium silicate is a chemical substance with the molecular formula NaO3Si- and a molar mass of 99.07 g/mol. Its CAS registry number is 15457-97-3. The IUPAC name is sodium dioxido(oxo)silane.

What is the CAS number of Disodium silicate?

The CAS registry number of Disodium silicate is 15457-97-3. Other or deprecated CAS numbers: 15915-98-7.

What is the molecular formula and weight of Disodium silicate?

The molecular formula of Disodium silicate is NaO3Si- and its molar mass is 99.07 g/mol.

What is Disodium silicate used for?

Known uses and roles of Disodium silicate include acids and alkalis in home care and cleaning.

Is Disodium silicate hazardous?

No GHS hazard classification for Disodium 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 Disodium silicate?

Disodium silicate is usually classified under HS code 283919 (Of sodium, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Disodium silicate?

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What is the price of Disodium silicate?

Suppliers quote Disodium 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 Disodium 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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