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Flame retardants

beta-Hexabromocyclododecane

Also known as beta-HBCD, Cyclododecane, 1,2,5,6,9,10-hexabromo-, (1R,2S,5R,6R,9R,10S)-rel-, (+-)-BETA-HBCD

CAS 134237-51-7Formula C12H18Br6Molar mass 641.70 g/molEC 603-802-4
GHS signal word: Warning. Pictograms: Harmful or irritant 2 suppliers listed
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beta-Hexabromocyclododecane chemical structure, C12H18Br6, CAS 134237-51-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
134237-51-7
Formula
C12H18Br6
Molar mass
641.70 g/mol
EC number
603-802-4
HS code
290389
Category
Flame retardants

What is beta-Hexabromocyclododecane?

Plain description, key identifiers and synonyms

beta-Hexabromocyclododecane is a chemical substance with the molecular formula C12H18Br6 and a molar mass of 641.70 g/mol. Its CAS registry number is 134237-51-7. The IUPAC name is (1R,2R,5S,6R,9S,10R)-1,2,5,6,9,10-hexabromocyclododecane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1R,2R,5S,6R,9S,10R)-1,2,5,6,9,10-hexabromocyclododecane
CAS number
134237-51-7 CAS number cross-checkedOther or deprecated CAS: 138257-18-8, 169102-58-3
EC number
603-802-4
Molecular formula
C12H18Br6
UNII
169IC4T62F, 7Q48Q7B14M
InChIKey
DEIGXXQKDWULML-UFVWWTPHSA-N
InChI
InChI=1S/C12H18Br6/c13-7-1-2-8(14)10(16)5-6-12(18)11(17)4-3-9(7)15/h7-12H,1-6H2/t7-,8-,9-,10+,11+,12-/m1/s1
Canonical SMILES
BrC1CCC(Br)C(Br)CCC(Br)C(Br)CCC1Br
Isomeric SMILES
C1C[C@H]([C@H](CC[C@H]([C@H](CC[C@H]([C@@H]1Br)Br)Br)Br)Br)Br

Synonyms

  • beta-HBCD
  • Cyclododecane, 1,2,5,6,9,10-hexabromo-, (1R,2S,5R,6R,9R,10S)-rel-
  • (+-)-BETA-HBCD
  • beta-Hexabromocyclododecane, (+-)-
  • (-)-beta-Hbcd
  • (-)-beta-Hexabromocyclododecane
  • (1R,2S,5R,6R,9R,10S)-rel-1,2,5,6,9,10-Hexabromocyclododecane
  • beta-Hexabromocyclododecane, (-)-
  • Cyclododecane, 1,2,5,6,9,10-hexabromo-, (1R,2S,5R,6R,9R,10S)-
  • (1r,2r,5s,6r,9s,10r)-1,2,5,6,9,10-hexabromocyclododecane
  • (1R,2R,5R,6S,9R,10S)-1,2,5,6,9,10-Hexabromocyclododecane
  • Beta-HBCDD
  • (+/-)-beta-HBCD
  • Hexabromocyclododecane, beta-
  • (+/-)-beta-Hexabromocyclododecane
  • beta-1,2,5,6,9,10-Hexabromocyclododecane
  • beta-hexabromocyclododecane, (+/-)-
  • rel-(1R,2S,5R,6R,9R,10S)-1,2,5,6,9,10-Hexabromocyclododecane
  • Cyclododecane, 1,2,5,6,9,10-hexabromo-, (1R,2R,5R,6S,9R,10S)-

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
641.70 g/molcalc.
Exact mass
635.6509 Dacalc.
LogP (octanol/water)
6.92calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
18calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
6calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1CCCCCCCCCCC1

C1CCCCCCCCCCC1

1 ring, 12 atoms, the Cyclododecane ring system.

189 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

beta-Hexabromocyclododecane suppliers

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All 2 suppliers

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Where suppliers are based

2 suppliers in 2 countries

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beta-Hexabromocyclododecane 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

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 beta-Hexabromocyclododecane is traded under.

HS 2903.89Indicative HS code

Halogenated derivatives of cyclanic, cyclenic or cycloterpenic hydrocarbons, other

World exports in 2024
$92.3M
−2.2% vs 2023, imports $90.8M
2019 to 2024
Top exporters
  1. China40.4%
  2. Japan26.5%
  3. United Kingdom7.2%
Top importers
  1. South Korea19.2%
  2. Japan16.6%
  3. United States15.8%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about beta-Hexabromocyclododecane, based on the data on this page

What is beta-Hexabromocyclododecane?

beta-Hexabromocyclododecane is a chemical substance with the molecular formula C12H18Br6 and a molar mass of 641.70 g/mol. Its CAS registry number is 134237-51-7. The IUPAC name is (1R,2R,5S,6R,9S,10R)-1,2,5,6,9,10-hexabromocyclododecane.

What is the CAS number of beta-Hexabromocyclododecane?

The CAS registry number of beta-Hexabromocyclododecane is 134237-51-7. Other or deprecated CAS numbers: 138257-18-8, 169102-58-3.

What is the molecular formula and weight of beta-Hexabromocyclododecane?

The molecular formula of beta-Hexabromocyclododecane is C12H18Br6 and its molar mass is 641.70 g/mol.

Is beta-Hexabromocyclododecane hazardous?

beta-Hexabromocyclododecane carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of beta-Hexabromocyclododecane?

beta-Hexabromocyclododecane is usually classified under HS code 290389 (Halogenated derivatives of cyclanic, cyclenic or cycloterpenic hydrocarbons, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy beta-Hexabromocyclododecane?

CompoundList lists 2 suppliers of beta-Hexabromocyclododecane in Canada and France. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of beta-Hexabromocyclododecane?

Suppliers quote beta-Hexabromocyclododecane 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 beta-Hexabromocyclododecane

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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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