Polyether_Polyether Polyol Knowledge 2,4-Dichloro-1-(dichloromethyl)benzene

2,4-Dichloro-1-(dichloromethyl)benzene

2,4-Dichloro-1-(dichloromethyl)benzene structural formula

Structural formula

Business number 03PF
Molecular formula C7H4Cl4
Molecular weight 229.92
label

2,4-Dichlorobenzylidene dichloride,

α,α,2,4-Tetrachlorotoluene,

aromatic compounds

Numbering system

CAS number:134-25-8

MDL number:None

EINECS number:205-134-5

RTECS number:None

BRN number:None

PubChem ID:None

Physical property data

None

Toxicological data

None

Ecological data

None

Molecular structure data

Molecular property data:


1 Molar refractive index50.66


2, Molar volumem 3/mol):153.1


3, Isotonic specific volume90.2K):391.3


4, Surface tension3.0 dyne/cm SPAN>): 42.6


5, Polarizability 0.5 10-24cm3): 20.08

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: 0

4. Number of rotatable chemical bonds: 1

5. Number of tautomers: none

6. Topological molecule polar surface area 0

7. Number of heavy atoms: 11

8. Surface charge: 0

9. Complexity: 126

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

None

Storage method

None

Synthesis method

The preparation method is to add 2,4-dichlorotoluene and a small amount of PCl3 as a catalyst into a reaction kettle, heat it to 120°C, and introduce chlorine gas under light conditions to perform a chlorination reaction. When a sample is taken and analyzed by GC, 2,4 -The conversion rate of dichlorotoluene ≥99% is the end point of the chlorination reaction. The obtained chlorinated products include 0.62% of 2,4-dichlorobenzyl chloride, 85.18% of 2,4-dichlorobenzylidene dichloride, and 13.8% of 2,4-dichlorotrichloromethylbenzene, which are separated after post-processing. 2,4-Dichlorobenzylidene dichloride.

Purpose

2,4-Dichlorobenzylidene dichloride is an intermediate for the preparation of 2,4-dichlorobenzaldehyde and can be used to produce fungicides such as ethyl alcohol.

20.08

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: 0

4. Number of rotatable chemical bonds: 1

5. Number of tautomers: none

6. Topological molecule polar surface area 0

7. Number of heavy atoms: 11

8. Surface charge: 0

9. Complexity: 126

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

None

Storage method

None

Synthesis method

The preparation method is to add 2,4-dichlorotoluene and a small amount of PCl3 as a catalyst into a reaction kettle, heat it to 120°C, and introduce chlorine gas under light conditions to perform a chlorination reaction. When a sample is taken and analyzed by GC, 2,4 -The conversion rate of dichlorotoluene ≥99% is the end point of the chlorination reaction. The obtained chlorinated products include 0.62% of 2,4-dichlorobenzyl chloride, 85.18% of 2,4-dichlorobenzylidene dichloride, and 13.8% of 2,4-dichlorotrichloromethylbenzene, which are separated after post-processing. 2,4-Dichlorobenzylidene dichloride.

Purpose

2,4-Dichlorobenzylidene dichloride is an intermediate for the preparation of 2,4-dichlorobenzaldehyde and can be used to produce fungicides such as ethyl alcohol.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.polyether-factory.com/archives/17829

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