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Chlorides and other halides

Thionyl bromide

Also known as Thionyl dibromide, sulfurooyl dibromide, thionylbromide

CAS 507-16-4Formula Br2OSMolar mass 207.87 g/molEC 208-064-3
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant
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Thionyl bromide chemical structure, Br2OS, CAS 507-16-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
507-16-4
Formula
Br2OS
Molar mass
207.87 g/mol
EC number
208-064-3
HS code
281290
Category
Chlorides and other halides

What is Thionyl bromide?

Plain description, key identifiers and synonyms

Thionyl bromide is a chemical substance with the molecular formula Br2OS and a molar mass of 207.87 g/mol. Its CAS registry number is 507-16-4.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
507-16-4 CAS number cross-checked
EC number
208-064-3
Molecular formula
Br2OS
UNII
N6CU78B13T
MDL number
MFCD00011448
InChIKey
HFRXJVQOXRXOPP-UHFFFAOYSA-N
InChI
InChI=1S/Br2OS/c1-4(2)3
SMILES (canonical and isomeric)
O=S(Br)Br

Synonyms

  • Thionyl dibromide
  • sulfurooyl dibromide
  • thionylbromide
  • Br2OS
  • sulfurous dibromide
  • SOBr2
  • Thionyl bromide, 97%
  • Sulfur bromide oxide (sobr2)
  • Thionyl bromide, purum, >=97.0% (AT)

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
207.87 g/molcalc.
Exact mass
205.8037 Dacalc.
LogP (octanol/water)
1.35calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
4calc.
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
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H312Harmful in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H332Harmful if inhaled.
Precautionary statements (17)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing 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.
  • 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.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • 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

Thionyl bromide suppliers

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Thionyl bromide 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

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 Thionyl bromide 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 Thionyl bromide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Thionyl bromide, based on the data on this page

What is Thionyl bromide?

Thionyl bromide is a chemical substance with the molecular formula Br2OS and a molar mass of 207.87 g/mol. Its CAS registry number is 507-16-4.

What is the CAS number of Thionyl bromide?

The CAS registry number of Thionyl bromide is 507-16-4.

What is the molecular formula and weight of Thionyl bromide?

The molecular formula of Thionyl bromide is Br2OS and its molar mass is 207.87 g/mol.

Is Thionyl bromide hazardous?

Thionyl bromide carries the GHS signal word "Danger". Main hazards: harmful in contact with skin, causes severe skin burns and eye damage, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Thionyl bromide?

Thionyl bromide 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 Thionyl bromide?

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What is the price of Thionyl bromide?

Suppliers quote Thionyl bromide 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 Thionyl bromide

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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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