Record Information
Version2.0
Creation Date2009-06-22 16:08:37 UTC
Update Date2014-12-24 20:24:39 UTC
Accession NumberT3D1800
Identification
Common NameHexabromocyclododecane
ClassSmall Molecule
DescriptionHexabromocyclododecane is an organobromide compound. It is a brominated flame retardant used in extruded (XPS) and expanded (EPS) polystyrene foam that is used as thermal insulation in the building industry. Hexabromocyclododecane is also a persistent organic pollutant, thus its use is controversial. Bromine is a halogen element with the symbol Br and atomic number 35. Diatomic bromine does not occur naturally, but bromine salts can be found in crustal rock. (3)
Compound Type
  • Bromide Compound
  • Household Toxin
  • Industrial/Workplace Toxin
  • Organic Compound
  • Organobromide
  • Pollutant
  • Synthetic Compound
Chemical Structure
Thumb
Synonyms
Synonym
1,2,5,6,9,10-Hexabromo-cyclodecane
1,2,5,6,9,10-Hexabromocyclodecane
Chemical FormulaC12H18Br6
Average Molecular Mass641.695 g/mol
Monoisotopic Mass635.651 g/mol
CAS Registry Number25637-99-4
IUPAC Name1,3,5,7,9,11-hexabromocyclododecane
Traditional Namehexabromocyclododecane
SMILESBrC1CC(Br)CC(Br)CC(Br)CC(Br)CC(Br)C1
InChI IdentifierInChI=1S/C12H18Br6/c13-7-1-8(14)3-10(16)5-12(18)6-11(17)4-9(15)2-7/h7-12H,1-6H2
InChI KeyInChIKey=LEOCKULGXOQRTQ-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as organobromides. Organobromides are compounds containing a chemical bond between a carbon atom and a bromine atom.
KingdomOrganic compounds
Super ClassOrganohalogen compounds
ClassOrganobromides
Sub ClassNot Available
Direct ParentOrganobromides
Alternative Parents
Substituents
  • Hydrocarbon derivative
  • Organobromide
  • Alkyl halide
  • Alkyl bromide
  • Aliphatic homomonocyclic compound
Molecular FrameworkAliphatic homomonocyclic compounds
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
LogPNot Available
Predicted Properties
PropertyValueSource
Water Solubility6.9e-05 g/LALOGPS
logP6.96ALOGPS
logP5.82ChemAxon
logS-7ALOGPS
Physiological Charge0ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area0 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity101.17 m³·mol⁻¹ChemAxon
Polarizability41.69 ųChemAxon
Number of Rings1ChemAxon
Bioavailability0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyDeposition DateView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-000i-0000009000-d54c3973cb28d76b95c42016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-000i-0000009000-efcdff582ba3ecbc35952016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0bti-0294751000-69008fe0f7800a6da8772016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-0000009000-b70edd8d17d91ed2c0462016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-001i-0000009000-638b5fc4d7fb35d621372016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0i7j-0901674000-920152d23c4a3be02a662016-08-03View Spectrum
Toxicity Profile
Route of ExposureOral (4) ; inhalation (4) ; dermal (4)
Mechanism of ToxicityBromine is a powerful oxidizing agent and is able to release oxygen free radicals from the water in mucous membranes. These free radicals are also potent oxidizers and produce tissue damage. In additon, the formation of hydrobromic and bromic acids will result in secondary irritation. The bromide ion is also known to affect the central nervous system, causing bromism. This is believed to be a result of bromide ions substituting for chloride ions in the in actions of neurotransmitters and transport systems, thus affecting numerous synaptic processes. (4, 5, 1)
MetabolismBromine is mainly absorbed via inhalation, but may also enter the body through dermal contact. Bromine salts can be ingested. Due to its reactivity, bromine quickly forms bromide and may be deposited in the tissues, displacing other halogens. (4)
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesIt is a brominated flame retardant used in extruded (XPS) and expanded (EPS) polystyrene foam that is used as thermal insulation in the building industry. Diatomic bromine does not occur naturally, but bromine salts can be found in crustal rock.
Minimum Risk LevelNot Available
Health EffectsBromine vapour causes irritation and direct damage to the mucous membranes. Elemental bromine also burns the skin. The bromide ion is a central nervous system depressant and chronic exposure produces neuronal effects. This is called bromism and can result in central reactions reaching from somnolence to coma, cachexia, exicosis, loss of reflexes or pathologic reflexes, clonic seizures, tremor, ataxia, loss of neural sensitivity, paresis, papillar edema of the eyes, abnormal speech, cerebral edema, delirium, aggressiveness, and psychoses. (3, 4, 5)
SymptomsBromine vapour causes irritation and direct damage to the mucous membranes. Symptoms include lacrimation, rhinorrhoea, eye irritation with mucous secretions from the oropharyngeal and upper airways, coughing, dyspnoea, choking, wheezing, epistaxis, and headache. The bromide ion is a central nervous system depressant producing ataxia, slurred speech, tremor, nausea, vomiting, lethargy, dizziness, visual disturbances, unsteadiness, headaches, impaired memory and concentration, disorientation and hallucinations. This is called bromism. (4, 5)
TreatmentEYES: irrigate opened eyes for several minutes under running water. INGESTION: do not induce vomiting. Rinse mouth with water (never give anything by mouth to an unconscious person). Seek immediate medical advice. SKIN: should be treated immediately by rinsing the affected parts in cold running water for at least 15 minutes, followed by thorough washing with soap and water. If necessary, the person should shower and change contaminated clothing and shoes, and then must seek medical attention. INHALATION: supply fresh air. If required provide artificial respiration.
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
DrugBank IDNot Available
HMDB IDNot Available
PubChem Compound ID33121
ChEMBL IDNot Available
ChemSpider ID30614
KEGG IDNot Available
UniProt IDNot Available
OMIM ID
ChEBI IDNot Available
BioCyc IDNot Available
CTD IDC089796
Stitch IDHexabromocyclododecane
PDB IDNot Available
ACToR ID7311
Wikipedia LinkNot Available
References
Synthesis ReferenceNot Available
MSDST3D1800.pdf
General References
  1. Ziouzenkova O, Orasanu G, Sharlach M, Akiyama TE, Berger JP, Viereck J, Hamilton JA, Tang G, Dolnikowski GG, Vogel S, Duester G, Plutzky J: Retinaldehyde represses adipogenesis and diet-induced obesity. Nat Med. 2007 Jun;13(6):695-702. Epub 2007 May 27. [17529981 ]
  2. Golomb, BA (1999). A Review of the Scientific Literature As It Pertains to Gulf War Illnesses. Volume 2: Pyridostigmine Bromide. Washington, DC: RAND.
  3. Wikipedia. Bromine. Last Updated 9 June 2009. [Link]
  4. International Programme on Chemical Safety (IPCS) INCHEM (1992). Poison Information Monograph for Bromine. [Link]
  5. Wikipedia. Potassium bromide. Last Updated 9 June 2009. [Link]
Gene Regulation
Up-Regulated Genes
GeneGene SymbolGene IDInteractionChromosomeDetails
Down-Regulated Genes
GeneGene SymbolGene IDInteractionChromosomeDetails

Targets

General Function:
Zinc ion binding
Specific Function:
Steroid hormone receptors are ligand-activated transcription factors that regulate eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Transcription factor activity is modulated by bound coactivator and corepressor proteins. Transcription activation is down-regulated by NR0B2. Activated, but not phosphorylated, by HIPK3 and ZIPK/DAPK3.
Gene Name:
AR
Uniprot ID:
P10275
Molecular Weight:
98987.9 Da
References
  1. Suzuki G, Tue NM, Malarvannan G, Sudaryanto A, Takahashi S, Tanabe S, Sakai S, Brouwer A, Uramaru N, Kitamura S, Takigami H: Similarities in the endocrine-disrupting potencies of indoor dust and flame retardants by using human osteosarcoma (U2OS) cell-based reporter gene assays. Environ Sci Technol. 2013 Mar 19;47(6):2898-908. doi: 10.1021/es304691a. Epub 2013 Mar 1. [23398518 ]
General Function:
Zinc ion binding
Specific Function:
The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Progesterone receptor isoform B (PRB) is involved activation of c-SRC/MAPK signaling on hormone stimulation.Isoform A: inactive in stimulating c-Src/MAPK signaling on hormone stimulation.Isoform 4: Increases mitochondrial membrane potential and cellular respiration upon stimulation by progesterone.
Gene Name:
PGR
Uniprot ID:
P06401
Molecular Weight:
98979.96 Da
References
  1. Suzuki G, Tue NM, Malarvannan G, Sudaryanto A, Takahashi S, Tanabe S, Sakai S, Brouwer A, Uramaru N, Kitamura S, Takigami H: Similarities in the endocrine-disrupting potencies of indoor dust and flame retardants by using human osteosarcoma (U2OS) cell-based reporter gene assays. Environ Sci Technol. 2013 Mar 19;47(6):2898-908. doi: 10.1021/es304691a. Epub 2013 Mar 1. [23398518 ]
General Function:
Zinc ion binding
Specific Function:
Isoform Alpha-1: Nuclear hormone receptor that can act as a repressor or activator of transcription. High affinity receptor for thyroid hormones, including triiodothyronine and thyroxine.Isoform Alpha-2: Does not bind thyroid hormone and functions as a weak dominant negative inhibitor of thyroid hormone action.
Gene Name:
THRA
Uniprot ID:
P10827
Molecular Weight:
54815.055 Da
References
  1. Yamada-Okabe T, Sakai H, Kashima Y, Yamada-Okabe H: Modulation at a cellular level of the thyroid hormone receptor-mediated gene expression by 1,2,5,6,9,10-hexabromocyclododecane (HBCD), 4,4'-diiodobiphenyl (DIB), and nitrofen (NIP). Toxicol Lett. 2005 Jan 15;155(1):127-33. [15585367 ]