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Chlorides and other halides

Selenium tetrachloride

Also known as Selenium chloride (SeCl4), (T-4)-, SeCl4, tetrachloro-lambda4-selane

CAS 10026-03-6Formula Cl4SeMolar mass 220.77 g/molEC 233-053-5
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Serious health hazard, Hazardous to the environment 1 supplier listed
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Selenium tetrachloride chemical structure, Cl4Se, CAS 10026-03-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
10026-03-6
Formula
Cl4Se
Molar mass
220.77 g/mol
EC number
233-053-5
HS code
281219
Category
Chlorides and other halides

What is Selenium tetrachloride?

Plain description, key identifiers and synonyms

Selenium tetrachloride is a chemical substance with the molecular formula Cl4Se and a molar mass of 220.77 g/mol. Its CAS registry number is 10026-03-6.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
10026-03-6 CAS number cross-checked
EC number
233-053-5
Molecular formula
Cl4Se
UNII
4GB8868P5J
MDL number
MFCD00011225
InChIKey
LNBXMNQCXXEHFT-UHFFFAOYSA-N
InChI
InChI=1S/Cl4Se/c1-5(2,3)4
SMILES (canonical and isomeric)
Cl[Se](Cl)(Cl)Cl

Synonyms

  • Selenium chloride (SeCl4), (T-4)-
  • SeCl4
  • tetrachloro-lambda4-selane
  • Selenium(IV) chloride
  • Selenium (IV) chloride
  • Selenium(IV) chloride (1:4)
  • Tetrachloroselenium
  • Tetrachloro-lambda~4~-selane
  • Selenium tetrachloride, 99.5%
  • Selenium(IV) chloride (-8 mesh)

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
220.77 g/molcalc.
Exact mass
219.7919 Dacalc.
LogP (octanol/water)
2.38calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
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
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H301Toxic if swallowed.
  • H331Toxic if inhaled.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (16)
  • 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.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • 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

Selenium tetrachloride suppliers

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Where suppliers are based

1 supplier in 1 country

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Selenium tetrachloride price

Indicative price range per kg from live supplier offers

No published prices right now

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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

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 Selenium tetrachloride is traded under.

HS 2812.19Indicative HS code

Chlorides and chloride oxides, other

World exports in 2024
$159M
+15.9% vs 2023, imports $156M
2019 to 2024
Top exporters
  1. South Korea32.7%
  2. Japan21.7%
  3. Germany16.4%
Top importers
  1. China27.8%
  2. Singapore21.4%
  3. South Korea19.0%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Selenium tetrachloride?

Selenium tetrachloride is a chemical substance with the molecular formula Cl4Se and a molar mass of 220.77 g/mol. Its CAS registry number is 10026-03-6.

What is the CAS number of Selenium tetrachloride?

The CAS registry number of Selenium tetrachloride is 10026-03-6.

What is the molecular formula and weight of Selenium tetrachloride?

The molecular formula of Selenium tetrachloride is Cl4Se and its molar mass is 220.77 g/mol.

Is Selenium tetrachloride hazardous?

Selenium tetrachloride carries the GHS signal word "Danger". Main hazards: toxic if swallowed, toxic if inhaled, may cause damage to organs through prolonged or repeated exposure. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Selenium tetrachloride?

Selenium tetrachloride is usually classified under HS code 281219 (Chlorides and chloride oxides, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Selenium tetrachloride?

CompoundList lists 1 supplier of Selenium tetrachloride in 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 Selenium tetrachloride?

Suppliers quote Selenium tetrachloride 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 tetrachloride

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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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