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Chlorides and other halides

Selenium hexafluoride

Also known as Selenium fluoride, selenium(VI) fluoride, Selenium fluoride (SeF6)

CAS 7783-79-1Formula F6SeMolar mass 192.95 g/molEC 620-577-8
GHS signal word: Danger. Pictograms: Gas under pressure, Corrosive, Acute toxicity (severe) 1 supplier listed
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Selenium hexafluoride chemical structure, F6Se, CAS 7783-79-1
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless gas, white solid at low temperature
Melting point
-50.8 °C
Boiling point
-34.4 °C
Density
7.887 g/L
Solubility
Insoluble in water
HS code
281290
Category
Chlorides and other halides
UN number
UN 2194
Illustrative photo, a gas cylinder on a trolley on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Selenium hexafluoride?

Plain description, key identifiers and synonyms

Selenium hexafluoride is a selenium coordination entity.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
7783-79-1 CAS number cross-checked
EC number
620-577-8
Molecular formula
F6Se
UNII
H91D37I668
MDL number
MFCD00042558
InChIKey
LMDVZDMBPZVAIV-UHFFFAOYSA-N
InChI
InChI=1S/F6Se/c1-7(2,3,4,5)6
SMILES (canonical and isomeric)
F[Se](F)(F)(F)(F)F

Synonyms

  • Selenium fluoride
  • selenium(VI) fluoride
  • Selenium fluoride (SeF6)
  • hexafluoridoselenium
  • UN 2194
  • Selenium fluoride (SeF6), (OC-6-11)-
  • selenium(6+) fluoride
  • [SeF6]
  • (oc-6-11)-Selenium fluoride (sef6)
  • (SeF6)
  • hexafluoro-lambda6-selane
  • SELENIUM FLUORIDE (SeF6),
  • Selenium hexafluoride (ACGIH:OSHA)
  • Selenium fluoride (SeF6), (OC611)
  • F6Se
  • Selenhexafluorid
  • Selenium fluoride, (OC-6-11)-
  • SeF6
  • Hexafluoro-lambda~6~-selane
  • Selenium hexafluoride [UN2194] [Poison gas]

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
Colorless gas, white solid at low temperatureexp.
Melting point
-50.8 °Cexp.
Boiling point
-34.4 °Cexp.
Density
7.887 g/Lexp.
Solubility
Insoluble in waterexp.
Vapour pressure
651.2 mm Hg at -48.7 °C, 213.1 mm Hg at -64.8 °C, 30.4 mm Hg at -87.5 °Cexp.

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
192.95 g/molcalc.
Exact mass
193.9069 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
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS04: Gas under pressure
Gas under pressure
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)

Hazard statements

  • H280Contains gas under pressure, may explode if heated.
  • H314Causes severe skin burns and eye damage.
  • H330Fatal if inhaled.
Precautionary statements (17)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P320Specific treatment is urgent (see supplemental first aid instructions on the label).
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P410 + P403Protect from sunlight. Store in a well-ventilated place.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2194
Transport hazard class
2.3

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

Selenium hexafluoride suppliers

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Where suppliers are based

1 supplier in 1 country

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Selenium hexafluoride price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Gaseous electric insulator.

Used during production of selenium hydroxide and hydrofluoric acid, selenium and nitrogen.

Use classes: Inorganic substances.

How it is made

The action of halogens or halides on elemental selenium yields various selenium halides, depending on the temperature and stoichiometric ratio. (Selenium halides)

Prepared by passing gaseous fluorine over finely divided selenium in a copper vessel.

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 Selenium hexafluoride is traded under.

HS 2812.90Indicative HS code

Halides and halide oxides of non-metals, other

World exports in 2024
$572M
+10.6% vs 2023, imports $388M
2019 to 2024
Top exporters
  1. South Korea28.3%
  2. China20.0%
  3. United States18.5%
Top importers
  1. South Korea16.4%
  2. Japan12.3%
  3. Singapore11.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Selenium hexafluoride, based on the data on this page

What is Selenium hexafluoride?

Selenium hexafluoride is a selenium coordination entity.

What is the CAS number of Selenium hexafluoride?

The CAS registry number of Selenium hexafluoride is 7783-79-1.

What is the molecular formula and weight of Selenium hexafluoride?

The molecular formula of Selenium hexafluoride is F6Se and its molar mass is 192.95 g/mol.

What is Selenium hexafluoride used for?

Gaseous electric insulator. Used during production of selenium hydroxide and hydrofluoric acid, selenium and nitrogen. Use classes: Inorganic substances.

Is Selenium hexafluoride hazardous?

Selenium hexafluoride carries the GHS signal word "Danger". Main hazards: contains gas under pressure, may explode if heated, causes severe skin burns and eye damage, fatal if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Selenium hexafluoride?

Selenium hexafluoride is usually classified under HS code 281290 (Halides and halide oxides of non-metals, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Selenium hexafluoride?

CompoundList lists 1 supplier of Selenium hexafluoride in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Selenium hexafluoride?

Suppliers quote Selenium hexafluoride 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 Selenium hexafluoride

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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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