Quinoxaline Chemical Properties

Melting point:

29-32 °C (lit.)

Boiling point:

220-223 °C (lit.)

Density 

1.124 g/mL at 25 °C (lit.)

refractive index 

nD48 1.6231

Flash point:

209 °F

storage temp. 

2-8°C

solubility 

alcohol: freely soluble(lit.)

pka

0.56(at 20℃)

form 

Crystalline Low Melting Solid

color 

Light yellow to brown

Water Solubility 

SOLUBLE

Merck 

14,8078

BRN 

109351

Stability:

Light Sensitive

LogP

1.320

CAS DataBase Reference

91-19-0(CAS DataBase Reference)

NIST Chemistry Reference

Quinoxaline(91-19-0)

EPA Substance Registry System

Quinoxaline (91-19-0)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38-36/38

Safety Statements 

26-36-37/39

WGK Germany 

3

RTECS 

VD1225000

Hazard Note 

Irritant

TSCA 

Yes

HS Code 

29339990

MSDS

• Language:English Provider:Quinoxaline
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Quinoxaline Usage And Synthesis

Chemical Properties

light yellow to brown crystalline

Uses

Quinoxaline is a reagent used in the synthesis of quinoxaline diimides as small molecule non-fullerene acceptors for organic solar cells.

Uses

Organic synthesis.

Definition

ChEBI: A naphthyridine in which the nitrogens are at positions 1 and 4.

Synthesis Reference(s)

Journal of the American Chemical Society, 69, p. 795, 1947 DOI: 10.1021/ja01196a015
The Journal of Organic Chemistry, 55, p. 1744, 1990 DOI: 10.1021/jo00293a014
Organic Syntheses, Coll. Vol. 4, p. 824, 1963

General Description

Transition metal-free acylation of quinoxaline derivatives, by cross dehydrogenative coupling (CDC) reaction, were studied.

Purification Methods

Crystallise quinoxaline from pet ether. It crystallises as the monohydrate on addition of water to a pet ether solution. It has UV: at 242 and 331nm (Ho –2); 234 and 316nm (pH 7.1). The picrate has m 161-162o.[Albert & Phillips J Chem Soc 1294 1956, Beilstein 23 H 176, 23 II 177, 23 III/IV 1226, 23/7 V 135.]

Quinoxaline(91-19-0)Related Product Information

• Glipizide
• Phenazine
• DIAZOXIDE
• 2-Quinoxalinecarboxylic acid
• 2-Quinoxalinone
• Pyrazinamide
• Sulfachoropyrazine sodium
• QUINAZOLINE-2-CARBOXYLIC ACID
• 3-Quinolineboronic acid
• QUINOXALINE-6-CARBALDEHYDE
• Quinoline-5-boronic acid
• 6-QUINOXALINECARBONITRILE
• 2-QUINOXALINYLMETHYLAMINE,97%
• Quinoxalin-6-yl-MethylaMine hydrochloride
• 2-QUINOXALINETHIOL
• Methyl quinoxaline-5-carboxylate
• (5-METHOXY-2-OXO-2,3-DIHYDRO-1H-INDOL-3-YL)-ACETIC ACID
• QUINOXALINE-5-CARBOXYLIC ACID