Toluene diisocyanate manufacturer Knowledge α,α-2,6-Tetrachlorotoluene α,α,2,6-Tetrachlorotoluene

α,α-2,6-Tetrachlorotoluene α,α,2,6-Tetrachlorotoluene

α,α-2,6-tetrachlorotoluene structural formula

Structural formula

Business number 01RW
Molecular formula C7H4Cl4
Molecular weight 229
label

None

Numbering system

CAS number:81-19-6

MDL number:MFCD00016349

EINECS number:201-332-0

RTECS number:None

BRN number:908809

PubChem number:24861778

Physical property data

1. Characteristics: colorless liquid.
2. Density ( g/mL,25/4℃): Unsure

3. Relative vapor density (g/mL,AIR=1): Unsure


4. Melting point (ºC): Unsure


5. Boiling point (ºC,Normal pressure): Unsure


6. Boiling point (ºC,5.2kPa):132-136℃(1.6kPa), 140-142 ℃ (2.13kPa)


7. Refractive index: Uncertain


8. Flash Point (ºC): Unsure


9. Specific optical rotation (º): Unsure


10. Autoignition point or ignition temperature (ºC): Unsure


11. Vapor pressure (kPa,25ºC): Unsure


12. Saturated vapor pressure (kPa,60ºC):�margin-top-alt: auto; mso-margin-bottom-alt: auto” align=left>4. Surface Tension (dyne/cm):42.6


5. Polarizability10-24cm3):20.08

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 4.3

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: 116

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 yet

Storage method

This product should be stored in a sealed, cool, dark, dry place away from light.

Synthesis method

The preparation method is 2,6-Chlorination of dichlorotoluene yields 2,6-DichloroDichlorobenzyl.
Xianxiang 2,6-Add thionyl chloride to dichlorotoluene, and use phosphorus trichloride as a catalyst , under ultraviolet irradiation at 200℃通 Add chlorine gas, and then use alkali solution to absorb the remaining gas until the mass increases to reach the theoretical amount, and you will get 2, 6- Dichloro Benzyl dichloride.

Purpose

2,6-DichloroDichlorobenzyl also known as 2,6-二 Chlorobenzylidene dichloride, an important intermediate for the synthesis of benzoyl urea pesticides 2,6-Dichlorobenzaldehyde or 2,6-二 Chlorobenzaldehyde oxime is also an intermediate of the antibiotic diclofenac and penicillin.

AN> 2,6-Add thionyl chloride to dichlorotoluene, and add phosphorus trichloride As a catalyst, under ultraviolet irradiation at 200 ℃, and then use alkali to absorb the remaining gas until the mass increase reaches the theoretical amount, that is, 2,6-DichloroDichlorobenzyl.

Purpose

2,6-DichloroDichlorobenzyl also known as 2,6-二 Chlorobenzylidene dichloride, an important intermediate for the synthesis of benzoyl urea pesticides 2,6-Dichlorobenzaldehyde or 2,6-二 Chlorobenzaldehyde oxime is also an intermediate of the antibiotic diclofenac and penicillin.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.chemicalchem.com/archives/24496

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