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Chlorides and other halides

Fluorosilicate

Also known as Hexafluorosilicate(2-), hexafluorosilicon(2-), Silicon hexafluoride ion

CAS 17084-08-1Formula F6Si-2Molar mass 142.07 g/mol
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Fluorosilicate chemical structure, F6Si-2, CAS 17084-08-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
17084-08-1
Formula
F6Si-2
Physical form
Crystals
HS code
282690
Category
Chlorides and other halides
UN number
UN 2856
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Fluorosilicate?

Plain description, key identifiers and synonyms

Hexafluorosilicate(2-) is a silicon coordination entity.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
hexafluorosilicon(2-)
CAS number
17084-08-1 CAS number cross-checked
Molecular formula
F6Si-2
InChIKey
OHORFAFFMDIQRR-UHFFFAOYSA-N
InChI
InChI=1S/F6Si/c1-7(2,3,4,5)6/q-2
SMILES (canonical and isomeric)
F[Si-2](F)(F)(F)(F)F

Synonyms

  • Hexafluorosilicate(2-)
  • hexafluorosilicon(2-)
  • Silicon hexafluoride ion
  • Hexafluorosilicate(2-) ion
  • hexafluoridosilicate(2-)
  • Silicate(2-), hexafluoro-
  • Cesium hexafluoro silicate
  • hexafluoridosilicate(IV)
  • Fluorosilicates, n.o.s.
  • SiF6(2-)
  • [SiF6](2-)

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

Physical form
Crystalsexp.

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
142.07 g/molcalc.
Exact mass
141.9684 Dacalc.
LogP (octanol/water)
2.14calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
-2calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms
UN number
UN 2856

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

Fluorosilicate 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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Fluorosilicate 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 Fluorosilicate is traded under.

HS 2826.90Indicative HS code

Fluorides, fluorosilicates, fluoroaluminates and other complex fluorine salts, other

World exports in 2024
$465M
−20.9% vs 2023, imports $484M
2019 to 2024
Top exporters
  1. China52.6%
  2. Germany16.1%
  3. South Korea11.1%
Top importers
  1. Japan33.0%
  2. United States18.8%
  3. South Korea8.4%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Fluorosilicate?

Hexafluorosilicate(2-) is a silicon coordination entity.

What is the CAS number of Fluorosilicate?

The CAS registry number of Fluorosilicate is 17084-08-1.

What is the molecular formula and weight of Fluorosilicate?

The molecular formula of Fluorosilicate is F6Si-2 and its molar mass is 142.07 g/mol.

Is Fluorosilicate hazardous?

No GHS hazard classification for Fluorosilicate 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 Fluorosilicate?

Fluorosilicate is usually classified under HS code 282690 (Fluorides, fluorosilicates, fluoroaluminates and other complex fluorine salts, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Fluorosilicate?

CompoundList lists 2 suppliers of Fluorosilicate in China and India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Fluorosilicate in India?

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

What is the price of Fluorosilicate?

Suppliers quote Fluorosilicate 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 Fluorosilicate

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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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