Biphenyl-4,4'-diol

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Structural formula
Structural formula of biphenyl-4,4'-diol
General
Surname Biphenyl-4,4'-diol
other names
  • 4,4'-dihydroxydiphenyl
  • (1,1'-biphenyl) -4,4'-diol
  • 4,4'-dihydroxybiphenyl
  • 4,4'-biphenol
  • 4,4'-diphenol
Molecular formula C 12 H 10 O 2
Brief description

white odorless solid

External identifiers / databases
CAS number 92-88-6
EC number 202-200-5
ECHA InfoCard 100.002.001
PubChem 7112
Wikidata Q2168450
properties
Molar mass 186.21 g mol −1
Physical state

firmly

Melting point

approx. 285 ° C

solubility

very heavy in water (0.1 g l −1 at 20 ° C)

safety instructions
GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 312-315-319-335
P: 261-280-305 + 351 + 338
Toxicological data
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Biphenyl-4,4'-diol is a chemical compound from the group of biphenyls .

Extraction and presentation

Biphenyl-4,4'-diol can be obtained by diazotization of benzidine and boiling , dealkylation of tetra tert -butylphenol, by dehydrogenation of 4,4-bis (4-hydroxyphenyl) cyclohexanol or by hydrogenation of 3.3 ', 5.5 '-Tetra- tert -butyl-diphenoquinone are obtained.

properties

Biphenyl-4,4'-diol is a flammable, difficult to ignite, crystalline, white and odorless solid that is very sparingly soluble in water.

use

Biphenyl-4,4'-diol is used in the production of polyether - liquid crystals and plastics. It is also used as an antioxidant for rubber and latex .

Individual evidence

  1. ↑ a b c d e f g h i Entry on biphenyl-4,4′-diol in the GESTIS substance database of the IFA , accessed on December 24, 2016(JavaScript required) .
  2. ↑ Patent US4723046 : Process for the preparation of 4,4'-biphenol. Inventor: Teruyuki Nagata, Tohru Miura. ‌
  3. ↑ Patent US4482755 : High yield process for preparing 4,4'-biphenol and para-alkylbenzenes. Inventors: Walter M. Kruse, John F. Stephen. ‌
  4. ↑ Data sheet 4,4′-dihydroxybiphenyl, 97% from Sigma-Aldrich , accessed on December 24, 2016 ( PDF ).
  5. ↑ Data sheet 4,4′-dihydroxybiphenyl, 99% from AlfaAesar, accessed on December 24, 2016 ( PDF )(JavaScript required) .