Biphenyl-4,4'-dicarboxylic acid
Synonym(s):4,4′-Bibenzoic acid;4,4′-Dicarboxybiphenyl;4,4′-Diphenyldicarboxylic acid
- CAS NO.：787-70-2
- Empirical Formula: C14H10O4
- Molecular Weight: 242.23
- MDL number: MFCD00002554
- EINECS: 212-328-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-18 14:08:52
What is Biphenyl-4,4'-dicarboxylic acid?
Chemical properties
White to light beige powder
The Uses of Biphenyl-4,4'-dicarboxylic acid
Dendrimer building block.
What are the applications of Application
Biphenyl-4,4′-dicarboxylic acid is a 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.]
Properties of Biphenyl-4,4'-dicarboxylic acid
| 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 |
| form | Powder |
| pka | 3.77±0.10(Predicted) |
| color | White to light beige |
| BRN | 523308 |
| CAS DataBase Reference | 787-70-2(CAS DataBase Reference) |
| EPA Substance Registry System | [1,1'-Biphenyl]-4,4'-dicarboxylic acid (787-70-2) |
Safety information for Biphenyl-4,4'-dicarboxylic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Biphenyl-4,4'-dicarboxylic acid
| InChIKey | NEQFBGHQPUXOFH-UHFFFAOYSA-N |
Biphenyl-4,4'-dicarboxylic acid manufacturer
Aether Industries Limited
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