Toluene diisocyanate manufacturer Knowledge 2,5-Dimethylpyrazine 2,5-Dimethylpyrazine

2,5-Dimethylpyrazine 2,5-Dimethylpyrazine

2,5-dimethylpyrazine structural formula

Structural formula

Business number 03GH
Molecular formula C6H8N2
Molecular weight 108.14
label

2,5-Dimethyl-p-diazepine,

2,5-dimethyl-1,4-diazine,

2,5-dimethyl-pyrazin,

food additives,

Flavor enhancer

Numbering system

CAS number:123-32-0

MDL number:MFCD00006147

EINECS number:204-618-3

RTECS number:UQ2800000

BRN number:107052

PubChem number:24901599

Physical property data

1. Character: colorless to slightly yellow liquid


2. Melting point:15


3. Boiling point:155

4. Solubility: soluble in water, ethanol , diethyl ether. Can evaporate with water vapor

Toxicological data

1, acute toxicity: rat oral LD50: 1020mg/kg


Mouse transperitoneal membrane LD50: 1350mg/kg


2, mutagenicity: yeast mutation test system: 33800mg/L


Hamster ovary cell analysis and testing system: 2500mg/L

Ecological data

None yet

Molecular structure data

5. Molecular property data:


1. Molar refractive index: 32.08


2. Molar volume (m3/mol):108.4


3. isotonic specific volume (90.2K):270.8


4. Surface Tension (dyne/cm):38.9


5. Polarizability10-24cm3):12.71

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 25.8

7. Number of heavy atoms: 8

8. Surface charge: 0

9. Complexity: 62.9

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

1. Properties: Colorless to slightly yellow liquid. Can evaporate with water vapor.

Storage method

None yet

Synthesis method

2. Preparation method: in the presence of ammonium salt, from acrolein and ammonia in glycerin Obtained by heating reaction.

Purpose

3. Uses: This product has a pungent aroma of fried flowers and chocolate and cream. It is our countryGB- 2760-863. isotonic specific volume (90.2K):270.8


4. Surface Tension (dyne/cm):38.9


5. Polarizability10-24cm3):12.71

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 25.8

7. Number of heavy atoms: 8

8. Surface charge: 0

9. Complexity: 62.9

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

1. Properties: Colorless to slightly yellow liquid. Can evaporate with water vapor.

Storage method

None yet

Synthesis method

2. Preparation method: in the presence of ammonium salt, from acrolein and ammonia in glycerin Obtained by heating reaction.

Purpose

3. Uses: This product has a pungent aroma of fried flowers and chocolate and cream. It is our countryGB- 2760-86Stipulated as permitted of spices. Mainly used to prepare flavors such as cocoa, coffee, meat, nuts and potatoes. It can also be used in dye and pharmaceutical industries.

nt-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman'”>Specified as permitted spices. Mainly used in the preparation of flavors such as cocoa, coffee, meat, nuts and potatoes. It can also be used in dye and pharmaceutical industries.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.chemicalchem.com/archives/25940

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