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Silicates, borates and other salts

Kyanite

Also known as Valfor, Kyanite (Al2O(SiO4)), aluminum, orthosilicic acid, hydrate

CAS 1302-76-7Formula H6Al2O5SiMolar mass 168.09 g/mol
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Kyanite chemical structure, H6Al2O5Si, CAS 1302-76-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1302-76-7
Formula
H6Al2O5Si
Molar mass
168.09 g/mol
HS code
250850
Category
Silicates, borates and other salts

What is Kyanite?

Plain description, key identifiers and synonyms

Kyanite is a chemical substance with the molecular formula H6Al2O5Si and a molar mass of 168.09 g/mol. Its CAS registry number is 1302-76-7.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
1302-76-7
Molecular formula
H6Al2O5Si
InChIKey
INJRKJPEYSAMPD-UHFFFAOYSA-N
InChI
InChI=1S/2Al.H4O4Si.H2O/c;;1-5(2,3)4;/h;;1-4H;1H2
SMILES (canonical and isomeric)
O.O[Si](O)(O)O.[Al].[Al]

Synonyms

  • Valfor
  • Kyanite (Al2O(SiO4))
  • aluminum, orthosilicic acid, hydrate

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
168.09 g/molcalc.
Exact mass
167.9615 Dacalc.
LogP (octanol/water)
-4.2calc.
Topological polar surface area
112.4 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
8calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
4calc.

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.

Kyanite suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 2 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

2 suppliers in 2 countries

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Kyanite 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

Functional uses

  • Surface modifier

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 Kyanite is traded under.

HS 2508.50Exact HS code

Andalusite, kyanite and sillimanite

World exports in 2024
$117M
−8.8% vs 2023, imports $120M
2019 to 2024
Top exporters
  1. South Africa38.8%
  2. France * partner reported19.5%
  3. United States15.8%
Top importers
  1. Germany17.8%
  2. China12.9%
  3. Spain11.2%

* Partner reported figures, a lower bound.

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

The HS code shown for Kyanite is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Kyanite?

Kyanite is a chemical substance with the molecular formula H6Al2O5Si and a molar mass of 168.09 g/mol. Its CAS registry number is 1302-76-7.

What is the CAS number of Kyanite?

The CAS registry number of Kyanite is 1302-76-7.

What is the molecular formula and weight of Kyanite?

The molecular formula of Kyanite is H6Al2O5Si and its molar mass is 168.09 g/mol.

What is Kyanite used for?

Known uses and roles of Kyanite include fillers and thixotropes in adhesives and sealants, builders and chelants in home care and cleaning and surface modifier.

Is Kyanite hazardous?

No GHS hazard classification for Kyanite 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 Kyanite?

Kyanite is usually classified under HS code 250850 (Andalusite, kyanite and sillimanite). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Kyanite?

CompoundList lists 2 suppliers of Kyanite in United Kingdom and 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 Kyanite?

Suppliers quote Kyanite 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 Kyanite

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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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