5,6,7,8-Tetrahydroquinoxaline Chemical Properties

Boiling point:

85 °C3 mm Hg(lit.)

Density 

1.061 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.542(lit.)

FEMA 

3321 | 5,6,7,8-TETRAHYDROQUINOXALINE

Flash point:

195 °F

storage temp. 

Sealed in dry,Room Temperature

form 

clear liquid

pka

2.24±0.20(Predicted)

color 

Colorless to Yellow to Green

Specific Gravity

1.1334

Odor

at 0.10 % in dipropylene glycol. musty nut roasted bean cereal corn chip cheese

Odor Type

nutty

Water Solubility 

slightly soluble

JECFA Number

952

BRN 

957053

LogP

1.41

CAS DataBase Reference

34413-35-9(CAS DataBase Reference)

NIST Chemistry Reference

5,6,7,8-Tetrahydroquinoxaline(34413-35-9)

EPA Substance Registry System

Quinoxaline, 5,6,7,8-tetrahydro- (34413-35-9)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-24/25-36

WGK Germany 

3

TSCA 

Yes

HS Code 

29339900

MSDS

• Language:English Provider:5,6,7,8-Tetrahydroquinoxaline
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

5,6,7,8-Tetrahydroquinoxaline Usage And Synthesis

Chemical Properties

CLEAR VERY SLIGHTLY YELLOW LIQUID

Occurrence

Reported found in cocoa, coffee, wheat bread, fried cured pork, pork liver, cocoa, coffee, roasted filbert, roasted peanut and roasted sesame seeds.

Definition

ChEBI: 5,6,7,8-Tetrahydroquinoxaline is a member of pyrazines.

Preparation

By condensation of alicyclic α, β-diketone with an α, β-diamine; condensation of an acyclic α, β-diamine with an α, β-dicarbonyl.

Aroma threshold values

Aroma characteristics at 1.0%: nutty roasted corn chip, peanut, hazelnut, toasted coconut, coffee, graham cracker, popcorn, toasted and roasted grain.

Taste threshold values

Taste characteristics from 5 to 10 ppm: roasted nutty, corn and popcorn, toasted grain and corn chip, taco fatty, basmati rice, hazelnut and roasted coffee-like. Taste characteristics at 10 ppm: nutty, musty, corn taco and popcorn-like.

5,6,7,8-Tetrahydroquinoxaline(34413-35-9)Related Product Information

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