C12H8Br2
312 g/mol
Industrial ChemicalDanger
3,3'-Dibromo-1,1'-biphenyl
CAS16400-51-4EC803-115-1
Category
Industrial Chemical
Compound Class
Halocarbon
Primary Use
flame retardant additive
3,3'-Dibromo-1,1'-biphenyl is a polybrominated biphenyl (PBB) compound used as a flame retardant additive. PBBs are synthetic organic compounds that were added to plastics and textiles to reduce flammability, but their use is now banned or restricted in most regions due to toxicity and environmental persistence.
flame retardant additive for plasticsflame retardant additive for textilesflame retardant additive for foam products
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongStructure SimilarSimilarity 0.94
3,3''-Dibromo-1,1':3',1''-terphenyl
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research compound
SimilarStructure SimilarSimilarity 0.83
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research compound
SimilarStructure SimilarSimilarity 0.79
1³-Bromo-1¹,2¹:2⁴,3¹-terphenyl
CAS1762-87-4
electronic chemical intermediate
SimilarStructure SimilarSimilarity 0.79
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flame retardant additive
Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H335May cause respiratory irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 3,3'-Dibromo-1,1'-biphenyl (CAS 16400-51-4) is 2903.99.
HS code (international, 6-digit)
2903.99
EU CN code (8-digit)
2903 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
1-bromo-3-(3-bromophenyl)benzene
InChIKey
LPLLWKZDMKTEMV-UHFFFAOYSA-N
SMILES
C1=CC(=CC(=C1)Br)C2=CC(=CC=C2)Br
Synonyms (7)
- 1,1'-Biphenyl, 3,3'-dibromo-
- 3,3'-Dibromo-1,1'-biphenyl
- 3,3'-Dibromodiphenyl
- 3,3'-dibromobiphenyl
- PBB 11
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