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Chlorides and other halides

Cryolite

Also known as Cryolite (Na3(AlF6)), Cryocide, Kryocide

CAS 15096-52-3Formula AlF6Na3Molar mass 209.94 g/molEC 215-560-3
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 44 suppliers listed
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Cryolite chemical structure, AlF6Na3, CAS 15096-52-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Monoclinic crystals (natural product), amorphous powder (synthetic product)
Melting point
960 to 1027
Boiling point
Decomposes
Density
2.95 g/cm³
Solubility
Solubility in water, g/100ml at 25 °C: 0.042 (very poor)
HS code
282630
Category
Chlorides and other halides
Illustrative photo, closed jumbo bulk bags in a warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Cryolite?

Plain description, key identifiers and synonyms

Trisodium hexafluoroaluminate is an inorganic sodium salt and a perfluorometallate salt. It contains a hexafluoroaluminate(3-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
trisodium, hexafluoroaluminum(3-)
CAS number
15096-52-3 CAS number cross-checkedOther or deprecated CAS: 13775-53-6
EC number
215-560-3
Molecular formula
AlF6Na3
UNII
5ZIS914RQ9
MDL number
MFCD00003507
InChIKey
REHXRBDMVPYGJX-UHFFFAOYSA-H
InChI
InChI=1S/Al.6FH.3Na/h;6*1H;;;/q+3;;;;;;;3*+1/p-6
SMILES (canonical and isomeric)
F[Al-3](F)(F)(F)(F)F.[Na+].[Na+].[Na+]

Synonyms

  • Cryolite (Na3(AlF6))
  • Cryocide
  • Kryocide
  • Kryolith
  • ICE Spar
  • Cryolite (AlNa3F6)
  • Sodium aluminum fluoride
  • Prokil cryolite-96
  • Cryodust
  • Icetone
  • Kriolit
  • Greenland spar
  • Sodium hexafluoroaluminate
  • Aluminum sodium fluoride
  • Aluminum trisodium hexafluoride
  • Sodium fluoroaluminate
  • sodium hexafluoroaluminate(III)
  • trisodium, hexafluoroaluminum(3-)
  • Na3AlF6
  • sodium aluminofluorate
  • Aluminum sodium fluorfide
  • Na3[AlF6]
  • trisodium hexafluoridoaluminate
  • sodiumhexafluoroaluminate(III)
  • sodium hexafluoridoaluminate(3-)
Show all 32 synonyms
  • Sodium hexafluoroaluminate, 97%
  • sodium hexafluoridoaluminate(III)
  • trisodium hexafluoroaluminate(3-)
  • Cryolite, synthetic, >=97.0% (from F)
  • trisodium (OC-6-11)-hexafluoroaluminate(3-)
  • Sodium hexafluoroaluminate, 99.98% trace metals basis
  • Cryolite,naturallyoccurringmineral,grains,approximately0.06-19in

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

Appearance
Monoclinic crystals (natural product), amorphous powder (synthetic product)exp.
Odour
Odorless.exp.
Melting point
960 to 1027exp.
Boiling point
Decomposesexp.
Density
2.95 g/cm³exp.
Solubility
Solubility in water, g/100ml at 25 °C: 0.042 (very poor)exp.
Vapour pressure
No detectable vapor pressureexp.

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
209.94 g/molcalc.
Exact mass
209.9413 Dacalc.
LogP (octanol/water)
-6.85calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
10calc.
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

GHS signal word
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H332Harmful if inhaled.
  • H372Causes damage to organs through prolonged or repeated exposure.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (11)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.

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

Full safety data and first aid

Cryolite suppliers

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

All 44 suppliers
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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

44 suppliers in 13 countries

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Cryolite 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

Primarily a stomach poison. ... For use against Lepidoptera & Coleoptera on certain vegetables & fruit crops...

Principally an electrolyte in production and refining of aluminum, flux in production of various metals and alloys, flux and opacifier in manufacture of glass and enamels, coating for welding rods, filler for resin, rubber, ceramic-bonded grinding wheels.

Electrolyte in the reduction of alumina to aluminum, ceramics, insecticide, binder for abrasives, electric insulation, explosives & polishes.

Industrial uses: Catalyst, Filler, Flux agent, Abrasives.

Consumer uses: Abrasives, Flux agent, Filler.

Use classes: Insecticides.

Roles

  • acaricide
  • insecticide
  • pesticide

Functional uses

  • Biocide

How it is made

Reaction of hydrofluoric acid, hydrated alumina, and sodium carbonate.

It is commonly produced by mixing sodium aluminate soln with liquid or gaseous hydrogen fluoride.

Synthetically from aluminum fluoride, ammonium fluoride and salt.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 009-016-00-2[2]

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 Cryolite is traded under.

HS 2826.30Indicative HS code

Sodium hexafluoroaluminate (synthetic cryolite)

World exports in 2024
$48.6M
−7.2% vs 2023, imports $59.1M
2019 to 2024
Top exporters
  1. China37.4%
  2. Hungary10.4%
  3. Canada9.7%
Top importers
  1. United States15.5%
  2. Brazil14.7%
  3. United Arab Emirates * partner reported8.1%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Cryolite?

Trisodium hexafluoroaluminate is an inorganic sodium salt and a perfluorometallate salt. It contains a hexafluoroaluminate(3-).

What is the CAS number of Cryolite?

The CAS registry number of Cryolite is 15096-52-3. Other or deprecated CAS numbers: 13775-53-6.

What is the molecular formula and weight of Cryolite?

The molecular formula of Cryolite is AlF6Na3 and its molar mass is 209.94 g/mol.

What is Cryolite used for?

Primarily a stomach poison. ... For use against Lepidoptera & Coleoptera on certain vegetables & fruit crops...

Is Cryolite hazardous?

Cryolite carries the GHS signal word "Danger". Main hazards: harmful if inhaled, causes damage to organs through prolonged or repeated exposure, toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cryolite?

Cryolite is usually classified under HS code 282630 (Sodium hexafluoroaluminate (synthetic cryolite)). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cryolite?

CompoundList lists 44 suppliers of Cryolite in United States, China, India, Italy and 9 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Cryolite in India?

6 suppliers in India list Cryolite on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Cryolite?

Suppliers quote Cryolite 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 Cryolite

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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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