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Chlorides and other halides

Selenium tetrabromide

Also known as Selenium bromide (SeBr4), (T-4)-, Selenium bromide (SeBr4), Selenium tetrabromid

CAS 7789-65-3Formula Br4SeMolar mass 398.58 g/molEC 232-181-9
GHS signal word: Danger. Pictograms: Corrosive, Acute toxicity (severe), Serious health hazard, Hazardous to the environment 1 supplier listed Drug substance
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Selenium tetrabromide chemical structure, Br4Se, CAS 7789-65-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
7789-65-3
Formula
Br4Se
Molar mass
398.58 g/mol
EC number
232-181-9
HS code
281290
Category
Chlorides and other halides

What is Selenium tetrabromide?

Plain description, key identifiers and synonyms

Selenium tetrabromide is a chemical substance with the molecular formula Br4Se and a molar mass of 398.58 g/mol. Its CAS registry number is 7789-65-3.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
7789-65-3 CAS number cross-checked
EC number
232-181-9
Molecular formula
Br4Se
UNII
8O54YXR180
MDL number
MFCD00049766
InChIKey
VTQZBGAODFEJOW-UHFFFAOYSA-N
InChI
InChI=1S/Br4Se/c1-5(2,3)4
SMILES (canonical and isomeric)
[Se](Br)(Br)(Br)Br

Synonyms

  • Selenium bromide (SeBr4), (T-4)-
  • Selenium bromide (SeBr4)
  • Selenium tetrabromid
  • (t-4)-Selenium bromide (sebr4)
  • Selenium(IV) bromide
  • SeBr4
  • Tetrabromo-lambda~4~-selane

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
398.58 g/molcalc.
Exact mass
395.5899 Dacalc.
LogP (octanol/water)
3calc.
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
GHS05: Corrosive
Corrosive
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

  • H301 + H311 + H331Toxic if swallowed. Toxic in contact with skin. Toxic if inhaled.
  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H331Toxic if inhaled.
  • H351Suspected of causing cancer.
  • 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 (26)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • 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.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • 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.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • 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 tetrabromide suppliers

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Where suppliers are based

1 supplier in 1 country

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Selenium tetrabromide 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

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

Health and food

  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Inactive 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 tetrabromide 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 tetrabromide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Selenium tetrabromide?

Selenium tetrabromide is a chemical substance with the molecular formula Br4Se and a molar mass of 398.58 g/mol. Its CAS registry number is 7789-65-3.

What is the CAS number of Selenium tetrabromide?

The CAS registry number of Selenium tetrabromide is 7789-65-3.

What is the molecular formula and weight of Selenium tetrabromide?

The molecular formula of Selenium tetrabromide is Br4Se and its molar mass is 398.58 g/mol.

Is Selenium tetrabromide hazardous?

Selenium tetrabromide carries the GHS signal word "Danger". Main hazards: toxic if swallowed. toxic in contact with skin. toxic if inhaled, toxic if swallowed, toxic in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Selenium tetrabromide?

Selenium tetrabromide 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 tetrabromide?

CompoundList lists 1 supplier of Selenium tetrabromide 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 tetrabromide?

Suppliers quote Selenium tetrabromide 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 tetrabromide

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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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