ContaminantDB: 2,2',4,4',5,5'-Hexabromobiphenyl

Identification Taxonomy Biological Properties Physical Properties Toxicity Profile Spectra Concentrations Links References Targets (1)XML

Record Information

Version

1.0

Creation Date

2009-06-24 17:05:47 UTC

Update Date

2016-11-09 01:08:36 UTC

Accession Number

CHEM001717

Identification

Common Name

2,2',4,4',5,5'-Hexabromobiphenyl

Class

Small Molecule

Description

2,2',4,4',5,5'-Hexabromobiphenyl is a polybrominated biphenyl. Polybrominated biphenyls (PBBs) are a group of 209 synthetic organic compounds with 1-10 bromine atoms attached to biphenyl. They can be used as flame retardants and may be added to the plastics used to make products like computer monitors, televisions, textiles, and plastic foams to make them difficult to burn. However, the use of PBBs is banned or restricted in most areas due to their toxicity and persistence in the environment. (3, 4)

Contaminant Sources

IARC Carcinogens Group 2A
My Exposome Chemicals
T3DB toxins

Contaminant Type

Aromatic Hydrocarbon
Bromide Compound
Industrial/Workplace Toxin
Organic Compound
Organobromide
Polybrominated Biphenyl
Synthetic Compound

Chemical Structure

MOL SDF PDB SMILES InChI

Synonyms

Value	Source
2,2'4,4',5,5'-Hexabromo-1,1'-biphenyl	ChEBI
2,4,5,2',4',5'-Hexabromobiphenyl	ChEBI
PBB 153	ChEBI
PBB-153	ChEBI
PBB153	ChEBI
345-HBB	MeSH
245-HBB	MeSH

Chemical Formula

C₁₂H₄Br₆

Average Molecular Mass

627.584 g/mol

Monoisotopic Mass

621.541 g/mol

CAS Registry Number

59080-40-9

IUPAC Name

1,2,4-tribromo-5-(2,4,5-tribromophenyl)benzene

Traditional Name

hexabromobiphenyl

SMILES

BrC1=CC(Br)=C(C=C1Br)C1=CC(Br)=C(Br)C=C1Br

InChI Identifier

InChI=1S/C12H4Br6/c13-7-3-11(17)9(15)1-5(7)6-2-10(16)12(18)4-8(6)14/h1-4H

InChI Key

HMBBJSKXDBUNNT-UHFFFAOYSA-N

Chemical Taxonomy

Description

belongs to the class of organic compounds known as polybrominated biphenyls. These are organic aromatic compounds containing a biphenyl moiety, which is substituted at two or more ring positions by a bromine atom.

Kingdom

Organic compounds

Super Class

Benzenoids

Class

Benzene and substituted derivatives

Sub Class

Biphenyls and derivatives

Direct Parent

Polybrominated biphenyls

Alternative Parents

Substituents

Polybrominated biphenyl
Halobenzene
Bromobenzene
Aryl halide
Aryl bromide
Hydrocarbon derivative
Organobromide
Organohalogen compound
Aromatic homomonocyclic compound

Molecular Framework

Aromatic homomonocyclic compounds

External Descriptors

Not Available

Biological Properties

Status

Detected and Not Quantified

Origin

Exogenous

Cellular Locations

Membrane

Biofluid Locations

Not Available

Tissue Locations

Not Available

Pathways

Not Available

Applications

Not Available

Biological Roles

Not Available

Chemical Roles

Not Available

Physical Properties

State

Solid

Appearance

Colorless to white powder.

Experimental Properties

Property	Value
Melting Point	Not Available
Boiling Point	Not Available
Solubility	Not Available

Predicted Properties

Property	Value	Source
Water Solubility	4.2e-05 g/L	ALOGPS
logP	7.26	ALOGPS
logP	8.23	ChemAxon
logS	-7.2	ALOGPS
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	0	ChemAxon
Hydrogen Donor Count	0	ChemAxon
Polar Surface Area	0 Å²	ChemAxon
Rotatable Bond Count	1	ChemAxon
Refractivity	96.93 m³·mol⁻¹	ChemAxon
Polarizability	38.16 Å³	ChemAxon
Number of Rings	2	ChemAxon
Bioavailability	0	ChemAxon
Rule of Five	No	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	Yes	ChemAxon
MDDR-like Rule	No	ChemAxon

Spectra

Spectrum Type	Description	Splash Key	View
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Positive	splash10-00di-0000009000-e0aa9eb050e72925c23a	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Positive	splash10-00di-0000009000-0f29995fd0243bfb516e	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Positive	splash10-00di-0000009000-e006ad2b2c7966c23a60	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	splash10-00di-0000009000-bc06f4c474192eb9d7bc	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Negative	splash10-00di-0000009000-bc06f4c474192eb9d7bc	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Negative	splash10-00di-0000019000-444e52a299bf56d8faca	Spectrum
MS	Mass Spectrum (Electron Ionization)	splash10-0aor-0169412000-5bb37ee3f8884a70e021	Spectrum

Toxicity Profile

Route of Exposure

Oral (3) ; inhalation (3) ; dermal (3)

Mechanism of Toxicity

The exact mechanism of toxicty of PBBs varies depending on the specific congener. The predominant interaction is believed to involve the aryl hydrocarbon receptor (AhR). PBBs bind to and activate the AhR, which in turn initiates the transcriptional upregulation of a number of genes, affecting biochemical and endocrine pathways, cell cycle regulation, morphogenesis, oxidative stress response, and various other processes. This results in the numerous toxic responses characteristic of PBBs. Some of the known induced genes include the cytochrome P-450-dependent monooxygenases CYP1A1 and CYP1A2. (3)

Metabolism

PBBs can be absorbed via oral, inhalation, and dermal routes. Due to their lipophilic nature, PBBs, especially the highly brominated congeners, tend to accumulate in lipid-rich tissues such as the liver, adipose, skin, and breast milk. Certain PBB compounds are metabolized by the microsomal monooxygenase system catalyzed by cytochrome P-450 of the type induced by phenobarbital. The rate of metabolism may depends on the bromine substitution pattern. PBB congeners of low bromine content are transformed into hydroxylated derivatives that are predominately eliminated in the urine. Highly brominated congeners are either retained or excreted unchanged in the feces. (3)

Toxicity Values

Not Available

Lethal Dose

Not Available

Carcinogenicity (IARC Classification)

2A, probably carcinogenic to humans. (2)

Uses/Sources

PBBs can be used as flame retardants and may be added to the plastics used to make products like computer monitors, televisions, textiles, and plastic foams to make them difficult to burn. However, the use of PBBs is banned or restricted in most areas due to their toxicity and persistence in the environment. (3, 4)

Minimum Risk Level

Acute Oral: 0.01 mg/kg/day (1)

Health Effects

PBB exposure may cause weight loss, skin disorders (such as acne), nervous and immune systems effects, and effects on the liver, kidneys, and thyroid gland. (3)

Symptoms

Symptoms of PBB exposure may include nausea, abdominal pain, loss of appetite, joint pain, fatigue, and weakness. (4)

Treatment

EYES: 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.

Concentrations

Not Available

External Links

DrugBank ID

Not Available

HMDB ID

Not Available

FooDB ID

Not Available

Phenol Explorer ID

Not Available

KNApSAcK ID