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Halogenated compounds

Pcb 77

Also known as 3,3',4,4'-Tetrachlorobiphenyl, 3,4,3',4'-Tetrachlorobiphenyl, Biphenyl, 3,3',4,4'-tetrachloro-

CAS 32598-13-3Formula C12H6Cl4Molar mass 291.99 g/molEC 634-804-3
GHS signal word: Warning. Pictograms: Serious health hazard, Hazardous to the environment 6 suppliers listed
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Pcb 77 chemical structure, C12H6Cl4, CAS 32598-13-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
32598-13-3
Formula
C12H6Cl4
Melting point
182 to 184
Solubility
18.0 × 10⁻² MG/L WATER
HS code
290399
Category
Halogenated compounds

What is Pcb 77?

Plain description, key identifiers and synonyms

3,3',4,4'-tetrachlorobiphenyl is a tetrachlorobiphenyl that is biphenyl in which the hydrogens at position 3 and 4 on each phenyl group are replaced by chlorines. It is a dichlorobenzene and a tetrachlorobiphenyl.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,2-dichloro-4-(3,4-dichlorophenyl)benzene
CAS number
32598-13-3 CAS number cross-checkedOther or deprecated CAS: 80333-65-9
EC number
634-804-3
Molecular formula
C12H6Cl4
UNII
Y2I6546TMI
MDL number
MFCD00055251
InChIKey
UQMGJOKDKOLIDP-UHFFFAOYSA-N
InChI
InChI=1S/C12H6Cl4/c13-9-3-1-7(5-11(9)15)8-2-4-10(14)12(16)6-8/h1-6H
SMILES (canonical and isomeric)
C1=CC(=C(C=C1C2=CC(=C(C=C2)Cl)Cl)Cl)Cl

Synonyms

  • 3,3',4,4'-Tetrachlorobiphenyl
  • 3,4,3',4'-Tetrachlorobiphenyl
  • Biphenyl, 3,3',4,4'-tetrachloro-
  • 1,1'-Biphenyl, 3,3',4,4'-tetrachloro-
  • 1,2-dichloro-4-(3,4-dichlorophenyl)benzene
  • 3,3',4,4'-Tetrachloro-1,1'-biphenyl
  • PCB No. 77
  • 33'44'-Tetrachloro-11'-biphenyl
  • 3,3',4,4'-Tetrachlorobiphenyl (PCB 77)
  • 3,3',4,4'-TCB
  • 3,3',4,4'-Tetracb
  • 32598-13-3(Isooctane)
  • 3,3',4,4'-Tetrachlorbiphenyl
  • PCB No 77, analytical standard
  • 3,4,3',4'-Tetrachloro-biphenyl
  • 3C - Group C Soil and spiking solution
  • PCB No. 77 10 |Ig/mL in Isooctane
  • PCB No. 77 10 microg/mL in Isooctane
  • 3,3',4,4'-Tetrachloro(14C-U)biphenyl
  • PCB No. 77 100 |Ig/mL in Isooctane
  • PCB No. 77 100 microg/mL in Isooctane
  • Tetrachlorobiphenyl, 3,4,3',4'-
  • 3,3',4,4'-Tetrachloro-1,1'-biphenyl labeled with carbon-14
  • 1,1'-Biphenyl, 3,3',4,4'-tetrachloro-, labeled with carbon-14

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

Melting point
182 to 184exp.
Solubility
18.0 × 10⁻² MG/L WATERexp.

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
291.99 g/molcalc.
Exact mass
289.9224 Dacalc.
LogP (octanol/water)
5.97calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
16calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)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, c1ccc(-c2ccccc2)cc1

c1ccc(-c2ccccc2)cc1

2 rings, 12 atoms, the Biphenyl ring system.

32,228 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H373May cause damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (5)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P273Avoid release to the environment.
  • P319Get medical help if you feel unwell.
  • P391Collect spillage.
  • 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

Pcb 77 suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 6 suppliers
6 of 6 offers
  • AgroIntelBioScan.com
    Singapore, SingaporeUnclaimed profile
    Pcb 77Grade, purity and minimum order on request
    Price on request
    View
  • Alinda Chemical Trade Company Ltd
    Hong Kong, Hong KongUnclaimed profile
    Pcb 77Grade, purity and minimum order on request
    Price on request
    View
  • Ambinter
    France, OrleansUnclaimed profile
    Pcb 77Grade, purity and minimum order on request
    Price on request
    View
  • Chemenu. Inc.
    China, ShanghaiUnclaimed profile
    Pcb 77Grade, purity and minimum order on request
    Price on request
    View
  • Clearsynth
    United States, San DiegoUnclaimed profile
    Pcb 77Grade, purity and minimum order on request
    Price on request
    View
  • DSL Chemicals Co., Ltd.
    China, ShanghaiUnclaimed profile
    Pcb 77Grade, purity and minimum order on request
    Price on request
    View

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

6 suppliers in 5 countries

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Pcb 77 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

/PCBs were/ used as heat-transfer fluids, organic diluents, lubricant inks, plasticizers, fire retardants, paint additives, sealing liquids, immersion oils, adhesives, dedusting agents, waxes, and as dielectric fluids for capacitors and transformers. (Polychlorinated biphenyls).

Polychlorinated biphenyls/.

How it is made

3,4- Dichloroaniline is coupled with 1,2-dichlorobenzene by using an excess of the latter reactant which also serves as the solvent medium. The coupling reaction proceeds smoothly after the addition of isoamyl nitrite, and the PCB product is readily isolated after a series of chromatographic procedures

Analysis of aroclor 1254 & 1248 for polychlorinated biphenyl (PCB) lacking 2,2'-cl substitution revealed presence of 3,4,4'-trichlorobiphenyl, 3,3'4,4'-tetrachlorobiphenyl & 3,3',4,5,5'-pentachlorobiphenyl.

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 Pcb 77 is traded under.

HS 2903.99Indicative HS code

Halogenated derivatives of aromatic hydrocarbons, other

World exports in 2024
$798M
−15.8% vs 2023, imports $786M
2019 to 2024
Top exporters
  1. China51.0%
  2. United States15.9%
  3. Belgium8.6%
Top importers
  1. India * partner reported16.1%
  2. United States14.7%
  3. Germany10.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Pcb 77 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Pcb 77, based on the data on this page

What is Pcb 77?

3,3',4,4'-tetrachlorobiphenyl is a tetrachlorobiphenyl that is biphenyl in which the hydrogens at position 3 and 4 on each phenyl group are replaced by chlorines. It is a dichlorobenzene and a tetrachlorobiphenyl.

What is the CAS number of Pcb 77?

The CAS registry number of Pcb 77 is 32598-13-3. Other or deprecated CAS numbers: 80333-65-9.

What is the molecular formula and weight of Pcb 77?

The molecular formula of Pcb 77 is C12H6Cl4 and its molar mass is 291.99 g/mol.

What is Pcb 77 used for?

/PCBs were/ used as heat-transfer fluids, organic diluents, lubricant inks, plasticizers, fire retardants, paint additives, sealing liquids, immersion oils, adhesives, dedusting agents, waxes, and as dielectric fluids for capacitors and transformers. (Polychlorinated biphenyls). Polychlorinated biphenyls/.

Is Pcb 77 hazardous?

Pcb 77 carries the GHS signal word "Warning". Main hazards: may cause damage to organs through prolonged or repeated exposure, very toxic to aquatic life, very toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Pcb 77?

Pcb 77 is usually classified under HS code 290399 (Halogenated derivatives of aromatic hydrocarbons, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pcb 77?

CompoundList lists 6 suppliers of Pcb 77 in China, France, Hong Kong, Singapore and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Pcb 77?

Suppliers quote Pcb 77 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 Pcb 77

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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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