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Silicates, borates and other salts

Pyrope

Also known as Vogesite, Pyrope (Al2Mg3(SiO4)3), Silicic acid (H4SiO4) aluminum magnesium salt (3:2:3)

CAS 1302-68-7Formula Al2Mg3O12Si3Molar mass 403.13 g/mol
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Pyrope chemical structure, Al2Mg3O12Si3, CAS 1302-68-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1302-68-7
Formula
Al2Mg3O12Si3
Molar mass
403.13 g/mol
HS code
284210
Category
Silicates, borates and other salts

What is Pyrope?

Plain description, key identifiers and synonyms

Pyrope is a chemical substance with the molecular formula Al2Mg3O12Si3 and a molar mass of 403.13 g/mol. Its CAS registry number is 1302-68-7. The IUPAC name is dialuminum, trimagnesium, trisilicate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dialuminum, trimagnesium, trisilicate
CAS number
1302-68-7
Molecular formula
Al2Mg3O12Si3
UNII
87O64D6I9N
InChIKey
FDKCTEWMJWRPDS-UHFFFAOYSA-N
InChI
InChI=1S/2Al.3Mg.3O4Si/c;;;;;3*1-5(2,3)4/q2*+3;3*+2;3*-4
SMILES (canonical and isomeric)
[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3]

Synonyms

  • Vogesite
  • Pyrope (Al2Mg3(SiO4)3)
  • Silicic acid (H4SiO4) aluminum magnesium salt (3:2:3)
  • Aluminum magnesium silicate trihydrate
  • dialuminum, trimagnesium, trisilicate

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
403.13 g/molcalc.
Exact mass
401.788 Dacalc.
LogP (octanol/water)
-17.31calc.
Topological polar surface area
276.7 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
12calc.
Rotatable bonds
0calc.
Heavy atoms
20calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
8calc.

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.

Pyrope suppliers

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Pyrope price

Indicative price range per kg from live supplier offers

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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

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 Pyrope is traded under.

HS 2842.10Indicative HS code

Double or complex silicates, including aluminosilicates whether or not chemically defined

World exports in 2024
$929M
−10.0% vs 2023, imports $944M
2019 to 2024
Top exporters
  1. Netherlands25.3%
  2. Germany24.4%
  3. Japan11.3%
Top importers
  1. United States15.2%
  2. Germany14.1%
  3. Netherlands13.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Pyrope?

Pyrope is a chemical substance with the molecular formula Al2Mg3O12Si3 and a molar mass of 403.13 g/mol. Its CAS registry number is 1302-68-7. The IUPAC name is dialuminum, trimagnesium, trisilicate.

What is the CAS number of Pyrope?

The CAS registry number of Pyrope is 1302-68-7.

What is the molecular formula and weight of Pyrope?

The molecular formula of Pyrope is Al2Mg3O12Si3 and its molar mass is 403.13 g/mol.

What is Pyrope used for?

Known uses and roles of Pyrope include fillers and thixotropes in adhesives and sealants and builders and chelants in home care and cleaning.

Is Pyrope hazardous?

No GHS hazard classification for Pyrope 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 Pyrope?

Pyrope is usually classified under HS code 284210 (Double or complex silicates, including aluminosilicates whether or not chemically defined). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pyrope?

Post a free request on CompoundList and suppliers of Pyrope will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Pyrope?

Suppliers quote Pyrope 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 Pyrope

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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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