2-Furfurylthio-3-methylpyrazine Chemical Properties

Density 

1.210 g/mL at 25 °C

refractive index 

n20/D1.600

FEMA 

3189 | 2-METHYL-3-,5 OR 6-(FURFURYLTHIO)PYRAZINE (MIXTURE OF ISOMERS)

Flash point:

110 °C

Odor

at 0.10 % in dipropylene glycol. sulfurous nutty roasted coffee cooked meat

Odor Type

coffee

JECFA Number

1082

InChI

InChI=1S/C10H10N2OS/c1-8-10(12-5-4-11-8)14-7-9-3-2-6-13-9/h2-6H,7H2,1H3

InChIKey

PFRSWMCUERVSAT-UHFFFAOYSA-N

SMILES

C1(SCC2OC=CC=2)=NC=CN=C1C

LogP

1.97

CAS DataBase Reference

65530-53-2(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xi

Risk Statements 

41

Safety Statements 

26-39

RIDADR 

UN 1993C 3 / PGIII

WGK Germany 

3

2-Furfurylthio-3-methylpyrazine Usage And Synthesis

Chemical Properties

Colorless liquid with aroma like roasted coffee. Boiling point 153 ~ 156 ℃ (1333Pa). Refractive index (n_D²⁰) 1.5970.

Uses

GB 2760--1996 stipulates that 2-Furfurylthio-3-methylpyrazine is temporarily allowed to use food spices.

Definition

ChEBI: 2-Methyl-3 or 5 or 6-(furfurylthio)pyrazine (mixture of isomers) is an aryl sulfide.

Research

FFM as a food spice is in accord with GB 2760 -1996 standard. It can be used for soft drinks, cold drinks, baked goods, and seasonings. Therefore, the damage caused by 2-Furfurylthio-3-methylpyrazine (FFM) as a corrosion inhibitor to humans and the ecological environment is very small. In addition, FFM has good solubility in 0.5 mol/L H 2SO. Electrochemical experiment data show that FFM can exhibit a prominent anti-corrosion nature for copper in H 2SO 4 medium in the temperature range of 298 K to 313 K . Potentiodynamic polarization curve results show that the corrosion inhibition efficiency of FFM can be as high as 97.9% at a concentration of 5 mmol/L. The surface morphology test results show that adding 5 mmol/L FFM in H 2SO 4 medium makes the copper sample relatively flat after soaking for 20 hours, and the roughness value is only 7.84 nm. The XPS experimental results show that the S and N atoms in the FFM molecule can form N -Cu and S -Cu bonds on the copper surface to generate chemical adsorption. Besides, the FFM adsorption on the copper/solution surface[1].

References

[1] Lei Guo . “Eco-friendly food spice 2-Furfurylthio-3-methylpyrazine as an excellent inhibitor for copper corrosion in sulfuric acid medium.” Journal of Molecular Liquids 317 (2020): Article 113915.

2-Furfurylthio-3-methylpyrazine(65530-53-2)Related Product Information

• Tetramethylpyrazine
• Pyrazinamide
• Thioridazine
• Glipizide
• 2-Methylpyrazine
• 2-Pyrazinylethanethiol
• 2,5-Dimethyl pyrazine
• 2-Fluoroisonicotinic acid
• 2-Fluoro-6-nitrophenol
• Pyrazine
• FURFURYLTHIO-3-METHYLPYRAZINE,2-FURFURYLTHIO-3-METHYLPYRAZINE 90+%
• 2-Furfurylthio-3-methylpyrazine
• 2-FURFURYLTHIO-6-METHYLPYRAZINE
• 2-FURFURYLTHIO-5-METHYLPYRAZINE