Toluene diisocyanate manufacturer Knowledge 4,4′-Dichlorodiphenyl sulfone 4,4′-Dichlorodiphenyl sulfone

4,4′-Dichlorodiphenyl sulfone 4,4′-Dichlorodiphenyl sulfone

4,4'-dichlorodiphenylsulfone structural formula

Structural formula

Business number 01QH
Molecular formula C12H8Cl2O2S
Molecular weight 287.17
label

Bis(4-chlorophenyl)sulfone,

Bis(4-chlorophenyl) sulfone,

aromatic sulfur compounds

Numbering system

CAS number:80-07-9

MDL number:MFCD00000619

EINECS number:201-247-9

RTECS number:WR3450000

BRN number:2052955

PubChem number:24849123

Physical property data

1. Properties: rhombohedral crystals

2. Density (g/mL, 25/4℃): Undetermined

3. Relative density: 1.54

4. Melting point (ºC): 146~149

5. Boiling point (ºC, normal pressure): Undetermined

6. Boiling point (ºC, 5.2kPa): Undetermined

7. Refractive index: Undetermined

8. Flash point (ºC): Undetermined

9. Specific rotation (º): Undetermined Determined

10. Autoignition point or ignition temperature (ºC): Not determined

11. Vapor pressure (kPa, 25ºC): Not determined

12. Saturated vapor pressure (kPa, 60ºC): Undetermined

13. Heat of combustion (KJ/mol): Undetermined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Log value of oil-water (octanol/water) partition coefficient: Undetermined

17. Explosion upper limit ( %, V/V): Undetermined

18. Lower explosion limit (%, V/V): Undetermined

19. Solubility: Insoluble in water, slightly soluble in cold Ethanol can be sublimated.

Toxicological data

1. Rat caliber LD50: 7500mg/kg; mouse caliber LD50: 24mg/kg

2. Other multi-dose toxicity data

Rat caliber TDL0: 364mg/ kg/26W-I

Ecological data

None yet

Molecular structure data

1. Molar refractive index: 69.93

2. Molar volume (cm3/mol): 201.6

3. Isotonic specific volume (90.2K ): 531.3

4. Surface tension (dyne/cm): 48.1

5. Polarizability (10-24cm3): 27.72

Compute chemical data

1. Hydrophobic parameter calculation reference value (XlogP): 3.9

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 2

5. Topological molecular polar surface area (TPSA): 34.1

6. Number of heavy atoms: 17

7. SurfaceCharge: 0

8. Complexity: 306

9. Number of isotope atoms: 0

10. Determine the number of atomic stereocenters: 0

11. Uncertain number of atomic stereocenters: 0

12. Determined number of chemical bond stereocenters: 0

13. Uncertain number of chemical bond stereocenters :0

14. Number of covalent bond units: 1

Properties and stability

Low toxicity, chlorobenzene used in the production process is a highly toxic substance, which is highly irritating to the skin, eyes, nose and respiratory system. Chlorosulfonic acid is more toxic and irritating. Therefore, attention must be paid to the tightness of the equipment during the production process to prevent leakage. Good ventilation should be maintained at the production site, and operators should wear protective equipment.

Storage method

This product should be kept sealed.

Packed in iron drums lined with plastic bags, 35kg per drum. Store in a dry, ventilated place, away from sunlight, heat and moisture. Store and transport according to general chemical regulations

Synthesis method

1. Chlorosulfonic acid method: Use chlorobenzene and chlorosulfonic acid to react to prepare 4-chlorobenzenesulfonyl chloride, which is then condensed with chlorobenzene in the presence of aluminum trichloride and refined to obtain the finished product.

 2. Sulfuric acid method: Using industrial sulfuric acid and chlorobenzene as raw materials, the product is synthesized by batch method or continuous method. The reaction is carried out in the presence of excess chlorobenzene.


Purpose

1. It is the main raw material for manufacturing engineering plastics such as polysulfone and polyethersulfone; it is also an intermediate for medicines, dyes and pesticides, and is widely used in the fields of engineering plastics and fine chemicals.

2. This product is the main intermediate of engineering plastic polysulfone. Used in organic synthesis and drug synthesis, such as the synthesis of 4,4’-diaminodiphenyl sulfone, a drug for treating leprosy.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.chemicalchem.com/archives/24067

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