2,2'-Biquinoline Chemical Properties

Melting point:

192-195 °C(lit.)

Boiling point:

389.54°C (rough estimate)

Density 

0.9734 (rough estimate)

refractive index 

1.6300 (estimate)

storage temp. 

Keep in dark place,Sealed in dry,Room Temperature

solubility 

1.02mg/l

pka

2.19±0.61(Predicted)

form 

Shiny Flakes

color 

Slightly yellow to light beige

Water Solubility 

Sparingly soluble in water (0.001g/L).

BRN 

187259

InChIKey

WPTCSQBWLUUYDV-UHFFFAOYSA-N

CAS DataBase Reference

119-91-5(CAS DataBase Reference)

NIST Chemistry Reference

2,2'-Biquinoline(119-91-5)

EPA Substance Registry System

2,2'-Biquinoline (119-91-5)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36-37/39

WGK Germany 

3

F 

8

TSCA 

Yes

HS Code 

29334990

MSDS

• Language:English Provider:2,2'-Biquinoline
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

2,2'-Biquinoline Usage And Synthesis

Chemical Properties

SLIGHTLY YELLOW TO LIGHT BEIGE SHINY FLAKES

Uses

2,2'-Biquinoline is used as a reagent for spectrophotometric determination of Cu and as an indicator for titration of organolithium reagents, giving yellow-green charge-transfer complexes.

Application

2,2'-Biquinoline, also known as cuprous reagent, reacts with monovalent cupric ion to give a purple color. It is a highly selective reagent for the determination of cuprous. It can be utilized as a ligand in the synthesis of heteroleptic Cu(I) complexes for light-emitting diodes(LED) and cationic iridium(III) complexes as phosphorescent dyes for live-cell imaging.

Synthesis Reference(s)

Tetrahedron Letters, 15, p. 2373, 1974 DOI: 10.1016/S0040-4039(01)92259-2

General Description

2,2′-Biquinoline is a white crystalline solid and it melts at 176°C. It is insoluble in water, but is soluble in ethyl, amyl and isoamyl alcohol, isoamyl acetate, dimethylformamide, acetic acid, acetonitrile and carbon tetrachloride.

Purification Methods

Decolourise 2,2'-biquinolyl in CHCl3 solution (charcoal), then crystallise it to constant melting point from EtOH or pet ether [Cumper et al. J Chem Soc 1188 1962]. [Beilstein 23/10 V 8.]

2,2'-Biquinoline(119-91-5)Related Product Information

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• 8,8'-DIQUINOLYL DISULFIDE
• 4,4'-DIMETHYL-2,2'-BIQUINOLINE
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• 4 4'-DICARBOXY-2 2'-BIQUINOLINE DISODIUM
• 4,4'-DICARBOXY-2,2'-BIQUINOLINE (FREE ACID)
• 1,1'-Dimethyl-2,2'-biquinolinium bistetrafluoroborate
• 2,2'-BIQUINOLINE-4,4'-DICARBOXYLIC ACID DISODIUM SALT DIHYDRATE,4,4'-DICARBOXY-2,2'-BIQUINOLINE DISODIUM SALT DIHYDRATE
• BCA
• AKOS AU36-M354