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HomeProduct name listDiphenic acid

Diphenic acid

Synonym(s):2,2′-Biphenyldicarboxylic acid;Biphenyl-2,2′-dicarboxylic acid;Diphenic acid, Diphenyl-2,2-dicarboxylic acid

  • CAS NO.:482-05-3
  • Empirical Formula: C14H10O4
  • Molecular Weight: 242.23
  • MDL number: MFCD00002464
  • EINECS: 207-576-4
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-08-24 19:19:26
Diphenic acid Structural

What is Diphenic acid?

Chemical properties

Off-white powder

Definition

ChEBI: Diphenic acid is a dicarboxylic acid. It is a conjugate acid of a diphenate(1-). It derives from a hydride of a biphenyl.

Synthesis Reference(s)

Journal of the American Chemical Society, 82, p. 2876, 1960 DOI: 10.1021/ja01496a051
Organic Syntheses, Coll. Vol. 1, p. 222, 1941
Synthesis, p. 731, 1982

Purification Methods

Crystallise diphenic acid from water. Hot Ac2O provides the anhydride below. [Beilstein 9 H 922, 9 IV 3552.]

Properties of Diphenic acid

Melting point: 227-229 °C(lit.)
Boiling point: 345.05°C (rough estimate)
Density  1.2695 (rough estimate)
refractive index  1.5389 (estimate)
storage temp.  Store below +30°C.
solubility  almost transparency in Methanol
pka pKa 3.20(H2O t=23.0) (Uncertain);5.06(H2O t=23.0) (Uncertain)
form  powder to crystal
color  White to Orange to Green
PH 4-5 (H2O, 20℃)
Water Solubility  insoluble (20 ºC)
Merck  14,3310
BRN  2053625
CAS DataBase Reference 482-05-3(CAS DataBase Reference)
NIST Chemistry Reference 2,2'-Biphenyldicarboxylic acid(482-05-3)
EPA Substance Registry System [1,1'-Biphenyl]-2,2'-dicarboxylic acid (482-05-3)

Safety information for Diphenic acid

Signal word Warning
Pictogram(s)
ghs
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.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405:Store locked up.

Computed Descriptors for Diphenic acid

InChIKey GWZCCUDJHOGOSO-UHFFFAOYSA-N

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