Epoxy curing agent Knowledge 1,2,4-trimethoxybenzene

1,2,4-trimethoxybenzene

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1,2,4-trimethoxybenzene structural formula

Structural formula

Business number 03QK
Molecular formula C9H12O3
Molecular weight 168.19
label

Hydroxyhydroquinone trimethyl ether,

aromatic compounds

Numbering system

CAS number:135-77-3

MDL number:MFCD00008360

EINECS number:205-219-7

RTECS number:None

BRN number:2047579

PubChem number:24900410

Physical property data

None

Toxicological data

None

Ecological data

None

Molecular structure data


Molecular property data:


1 Molar refractive index46.28


2 Molar volume(m3/mol):161.4


3 Isotonic specific volume90.2K):377.2


4 Surface tension(3.0 dyne/cm):29.8


5 Polarizability0.5 10-24 cm3):18.35

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: 3

4. Number of rotatable chemical bonds: 3

5. Number of tautomers: none

6. Topological molecule polar surface area 27.7

7. Number of heavy atoms: 12

8. Surface charge: 0

9. Complexity: 127

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

liquid. Boiling point 247℃, relative density 1.106, refractive index 1.5330, flash point >110℃

Storage method

None

Synthesis method

Oxidize vanillin with hydrogen peroxide, then hydrolyze, and methylate it with dimethyl sulfate; or use hydroquinone to oxidize it with sodium dichromate and sulfuric acid to generate terequinone, which is prepared with acetic anhydride. Acetylation yields 1,2,4-phloroglucinol triacetate, which is obtained by methylation with dimethyl sulfate.

Purpose

Intermediates of leucine.

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

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 3

4. Number of rotatable chemical bonds: 3

5. Number of tautomers: none

6. Topological molecule polar surface area 27.7

7. Number of heavy atoms: 12

8. Surface charge: 0

9. Complexity: 127

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

liquid. Boiling point 247℃, relative density 1.106, refractive index 1.5330, flash point >110℃

Storage method

None

Synthesis method

Oxidize vanillin with hydrogen peroxide, then hydrolyze, and methylate it with dimethyl sulfate; or use hydroquinone to oxidize it with sodium dichromate and sulfuric acid to generate terequinone, which is prepared with acetic anhydride. Acetylation yields 1,2,4-phloroglucinol triacetate, which is obtained by methylation with dimethyl sulfate.

Purpose

Intermediates of leucine.

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