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Biphenyl-4,4'-dicarboxylic acid

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Biphenyl-4,4'-dicarboxylic acid Basic information

Product Name:
Biphenyl-4,4'-dicarboxylic acid
Synonyms:
  • 4,4'-BIPHENYLDICARBOXYLIC ACID
  • 4,4'-BIBENZOIC ACID
  • 4,4'-DICARBOXYDIPHENYL
  • 4,4'-DIBENZOIC ACID
  • 4,4'-BISBENZOIC ACID
  • 4,4'-DIPHENIC ACID
  • 4,4'-DIPHENYLDICARBOXYLIC ACID
  • DIPHENYL-4,4'-DICARBOXYLIC ACID
CAS:
787-70-2
MF:
C14H10O4
MW:
242.23
EINECS:
212-328-3
Product Categories:
  • Biphenyl series
  • Carboxylic Acid Monomers
  • Biphenyl & Diphenyl ether
  • Monomers
  • Polymer Science
  • API's
  • Industrial/Fine Chemicals
  • Biphenyl derivatives
  • Biphenyls (for High-Performance Polymer Research)
  • Functional Materials
  • Reagent for High-Performance Polymer Research
  • 787-70-2
Mol File:
787-70-2.mol
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Biphenyl-4,4'-dicarboxylic acid Chemical Properties

Melting point:
>300 °C(lit.)
Boiling point:
482.5±38.0 °C(Predicted)
Density 
1.347±0.06 g/cm3(Predicted)
storage temp. 
Sealed in dry,Room Temperature
pka
3.77±0.10(Predicted)
form 
Powder
color 
White to light beige
BRN 
523308
InChIKey
NEQFBGHQPUXOFH-UHFFFAOYSA-N
CAS DataBase Reference
787-70-2(CAS DataBase Reference)
EPA Substance Registry System
[1,1'-Biphenyl]-4,4'-dicarboxylic acid (787-70-2)
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Safety Information

Hazard Codes 
Xi,Xn
Risk Statements 
36/37/38-20/21/22
Safety Statements 
26-37/39-36
WGK Germany 
3
RTECS 
DV2975000
HS Code 
29173990

MSDS

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Biphenyl-4,4'-dicarboxylic acid Usage And Synthesis

Chemical Properties

White to light beige powder

Uses

Dendrimer building block.

Purification Methods

The dicarboxylic acid is a white amorphous or microcrystalline substance which does not melt or sublime. It is best purified by precipitation of an aqueous alkaline solution with mineral acid, washing well with H2O and drying in vacuo at 100o. It is characterized by conversion to diphenyl-4,4’-dicarbonyl chloride (with PCl5 [Work J Chem Soc 1317 1940], or by phase transfer catalysis with SOCl2 + BuEt3N+Cl-in 1,2-dichloroethane [Burdett Synthesis 441 1991]) which crystallises from *C6H6 with m 184o. The di-acid chloride gives the dimethyl ester with MeOH, and has m 215-217o (plates from MeOH, m’s of 214o and 224o were also reported). The diethyl ester is similarly prepared with EtOH and has m 122o (from EtOH). [Beilstein 9 II 665, 9 III 4519, 9 IV 3563.]

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