5-METHYLQUINOXALINE

Synonym(s):Nutty oxaline

CAS NO.：13708-12-8
Empirical Formula: C9H8N2
Molecular Weight: 144.17
MDL number: MFCD00012335
EINECS: 237-246-5
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-18 18:16:58

What is 5-METHYLQUINOXALINE?

Description

5-Methylquinoxaline has a burnt, roasted, nutty, roasted com, coffee odor.

Chemical properties

Amber liquid

Chemical properties

5-Methylquinoxaline has a burnt, roasted, nutty, roasted corn, coffee odor

Occurrence

Reported found in coffee and roasted almonds

The Uses of 5-METHYLQUINOXALINE

5-Methylquinoxaline was used in the synthesis of 1,12-diphenyl-5-methyl-1,12,12a,12b-tetrahydrobis[1,2,4]triazolo[4,3-a:3′,4′-c]quinoxaline bis-cycloadducts.

Definition

ChEBI: A quinoxaline derivative in which the quinoxaline (1,4-naphthyridine) skeleton is substituted at C-5 with a methyl group.

Taste threshold values

Taste characteristics at 2 ppm: nutty, roasted, peanut and pyrazine-like with yeasty, corn-chip nuance.

General Description

5-Methylquinoxaline has been identified as one of the key volatile aroma compounds in roasted almonds{170] and roasted coffee.

Properties of 5-METHYLQUINOXALINE

Melting point:	20-21 °C (lit.)
Boiling point:	120 °C/15 mmHg (lit.)
Density	1.125 g/mL at 25 °C
refractive index	n20/D 1.62(lit.)
FEMA	3203 \| 5-METHYLQUINOXALINE
Flash point:	>230 °F
storage temp.	Sealed in dry,Room Temperature
form	neat
pka	1.40±0.30(Predicted)
Specific Gravity	1.112
color	Light yellow to Yellow to Orange
Odor	at 0.10 % in dipropylene glycol. toasted roasted corn nutty coffee burnt
JECFA Number	798
CAS DataBase Reference	13708-12-8(CAS DataBase Reference)
EPA Substance Registry System	Quinoxaline, 5-methyl- (13708-12-8)

Safety information for 5-METHYLQUINOXALINE

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.