5,6,7,8-Tetrahydroquinoxaline

Product Name:

5,6,7,8-Tetrahydroquinoxaline

Synonyms:

5,6,7,8-tetrahydro-quinoxalin;Quinoxaline, 5,6,7,8-tetrahydro-;FEMA 3321;FEMA NUMBER 3321;CYCLOHEXAPYRAZINE;5,6,7,8-TETRAHYDROQUINOXALINE;TETRAHYDROQUINOXALINE;5,6,7,8-Tetrahydroquioxaline

CAS:

34413-35-9

MF:

C8H10N2

MW:

134.18

EINECS:

252-002-8

Product Categories:

Flavor;Pyrazine compounds

Mol File:

34413-35-9.mol

Boiling point 

85 °C3 mm Hg(lit.)

density 

1.061 g/mL at 25 °C(lit.)

FEMA 

3321 | 5,6,7,8-TETRAHYDROQUINOXALINE

refractive index 

n20/D 1.542(lit.)

Fp 

195 °F

pka

2.24±0.20(Predicted)

Specific Gravity

1.1334

Water Solubility 

slightly soluble

JECFA Number

952

BRN 

957053

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)

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-24/25-36

WGK Germany 

3

TSCA 

Yes

HS Code 

29339900

Chemical Properties

CLEAR VERY SLIGHTLY YELLOW LIQUID

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.

Raw materials

Ethylenediamine