4,4′-Biphenol

4,4′-Biphenol Basic information
Product Name:4,4′-Biphenol
Synonyms:(1,1’-Biphenyl)-4,4’-diol;BIPHENYL-4,4′-DIOL;4,4′-BIPHENOL;4,4′-BIPHENYLDIOL;1-(9,10-dihydroanthracen-1-yl)-9,10-dihydroanthracene;Biphenyl-4,4′-diol 4,4′-Dihydroxybiphenyl 4,4′-Dihydroxydiphenyl 4,4′-Diphenol;P,P’-BIPHENOL;P,P’-DIPHENOL
CAS:92-88-6
MF:C12H10O2
MW:186.21
EINECS:202-200-5
Product Categories:Industrial/Fine Chemicals;Biphenyl derivatives;Biphenyl & Diphenyl ether;Phenoles and thiophenoles;Biphenyls (for High-Performance Polymer Research);Color Former & Related Compounds;Developer;Functional Materials;Reagent for High-Performance Polymer Research;bc0001
Mol File:92-88-6.mol
4,4'-Biphenol Structure
4,4′-Biphenol Chemical Properties
Melting point 280-282 °C(lit.)
Boiling point 280.69°C (rough estimate)
density 1.22
vapor pressure 0Pa at 25℃
refractive index 1.6010 (estimate)
storage temp. Sealed in dry,Room Temperature
form Powder
pka9.74±0.26(Predicted)
color Off-white to light beige or light gray
Water Solubility sparingly soluble
BRN 1908886
LogP2.7 at 20℃
CAS DataBase Reference92-88-6(CAS DataBase Reference)
NIST Chemistry Referencep,p’-Biphenol(92-88-6)
EPA Substance Registry System4,4′-Biphenyldiol (92-88-6)
Safety Information
Hazard Codes Xn
Risk Statements 21-36/37/38-37/38/68-36
Safety Statements 26-36-24/25-36/37
RIDADR 3077
WGK Germany 2
RTECS DV4725000
TSCA Yes
HazardClass 9
PackingGroup III
HS Code 29061900
ToxicityLD50 orl-rat: 9850 mg/kg TXAPA9 28,313,74
MSDS Information
ProviderLanguage
Biphenyl-4,4′-diolEnglish
SigmaAldrichEnglish
ACROSEnglish
ALFAEnglish
4,4′-Biphenol Usage And Synthesis
Chemical PropertiesPowder
UsesBiphenol is an intermediate used in the manufacture of thermoplastics such as liquid crystalline polymers (LCP), polyesters, polycarbonates and polysulfones.
UsesIntermediates of Liquid Crystals
Uses4,4′-biphenol be used intermediate liquid crystal polymers raw materials. Synthetic polymers, due to its excellent heat resistance, it is used as polyester, urethane modified monomer, polycarbonate, polysulfone, and epoxy resin, for the manufacture of an excellent engineering plastics and composite materials. Antioxidant antioxidants for rubber and plastics. Dye intermediates or petroleum products stabilizer.
DefinitionChEBI: A member of the class of hydroxybiphenyls that is biphenyl with hydroxy groups at positions 4 and 4′.
Flammability and ExplosibilityNotclassified
Safety ProfilePoison by intraperitoneal route.Moderately toxic by skin contact. Mildly toxic byingestion. Human mutation data reported. When heated todecomposition it emits acrid smoke and irritating fumes.
Purification MethodsRecrystallise the biphenol from aqueous EtOH preferably under N2 to avoid oxidation to the extended qiunone. It is characterized as the dimethyl derivative (4,4’-dimethoxybiphenyl) from which it is prepared by demethylation. The dimethoxy derivative has m 176.5-177o (from AcOH, EtOH, hexane or *C6H6) and sublimes in vacuo. [Williamson & Rodebush J Am Chem Soc 63 3019 1941, Beilstein 6 I 485, 6 II 962, 6 III 6389, 6 IV 6651.]
4,4′-Biphenol Preparation Products And Raw materials
Raw materials4,4′-Bis(trimethylsilyloxy)biphenyl–>6,6′-DI-TERT.BUTYL-4,4′-BI-ORTHO-CRESOL–>4-HYDROXY-4′-METHOXYBIPHENYL–>4,4′-Dimethoxybiphenyl–>3,3′,5,5′-TETRA(TERT-BUTYL)[1,1′-BIPHENYL]-4,4′-DIOL–>4-Hydroxy-4′-fluorobiphenyl–>4,4′-Difluorobiphenyl–>1-Chloro-4-fluorobenzene–>4-Bromophenol
Preparation Products4′-Hydroxy-4-biphenylcarbonitrile–>6fapbp–>3,3′,5,5′-tetraformyl-4,4′-biphenyldiol–>4,4′-BIPHENYLDICARBONITRILE–>[1,1′-biphenyl]-4,4′-diyl bis(2-Methylacrylate)–>3,3′,5,5′-tetrabromo-[1,1′-biphenyl]-4,4′-diol

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