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Silicates, borates and other salts

Thorite

Also known as Uranothorite, Thorite (Th(SiO4)), thorium(4+) orthosilicate

CAS 15501-85-6Formula O4SiThMolar mass 324.12 g/mol
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Thorite chemical structure, O4SiTh, CAS 15501-85-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
15501-85-6
Formula
O4SiTh
Molar mass
324.12 g/mol
HS code
284430
Category
Silicates, borates and other salts

What is Thorite?

Plain description, key identifiers and synonyms

Thorite is a chemical substance with the molecular formula O4SiTh and a molar mass of 324.12 g/mol. Its CAS registry number is 15501-85-6. The IUPAC name is thorium(4+) silicate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
thorium(4+) silicate
CAS number
15501-85-6 CAS number cross-checked
Molecular formula
O4SiTh
InChIKey
XSSPKPCFRBQLBU-UHFFFAOYSA-N
InChI
InChI=1S/O4Si.Th/c1-5(2,3)4;/q-4;+4
SMILES (canonical and isomeric)
[O-][Si]([O-])([O-])[O-].[Th+4]

Synonyms

  • Uranothorite
  • Thorite (Th(SiO4))
  • thorium(4+) orthosilicate
  • Thorium(IV) orthosilicate
  • Thorium silicate, 99.99%

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
324.12 g/molcalc.
Exact mass
323.9946 Dacalc.
LogP (octanol/water)
-5.14calc.
Topological polar surface area
92.24 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
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.

Thorite suppliers

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No supplier listings yet

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Thorite price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Thorite is traded under.

HS 2844.30Indicative HS code

Uranium depleted in U 235 and its compounds, thorium and its compounds, alloys…

World exports in 2024
$91M
+16.8% vs 2023, imports $48M
2019 to 2024
Top exporters
  1. South Africa73.2%
  2. United States13.4%
  3. Sweden6.9%
Top importers
  1. Belgium53.7%
  2. France * partner reported9.2%
  3. Canada8.8%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Thorite is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Thorite, based on the data on this page

What is Thorite?

Thorite is a chemical substance with the molecular formula O4SiTh and a molar mass of 324.12 g/mol. Its CAS registry number is 15501-85-6. The IUPAC name is thorium(4+) silicate.

What is the CAS number of Thorite?

The CAS registry number of Thorite is 15501-85-6.

What is the molecular formula and weight of Thorite?

The molecular formula of Thorite is O4SiTh and its molar mass is 324.12 g/mol.

Is Thorite hazardous?

No GHS hazard classification for Thorite 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 Thorite?

Thorite is usually classified under HS code 284430 (Uranium depleted in U 235 and its compounds, thorium and its compounds, alloys…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Thorite?

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What is the price of Thorite?

Suppliers quote Thorite 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 Thorite

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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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