Dimethyl sulfone Dimethyl sulfone

Structural formula

• Numbering system
• Physical property data
• Toxicological data
• Ecological data
• Molecular structure data
• Computing chemical data
• More
  • Properties and Stability
  • Storage method
  • Synthesis method
  • Purpose

Numbering system

CAS number:67-71-0

MDL number:MFCD00007566

EINECS number:200-665-9

RTECS number:PB2785000

BRN number:1737717

PubChem number:24866069

Physical property data

1. Properties: White needle-like crystals with a strange odor.

2. Density (g/mL, 25/4℃): 1.16

3. Melting point (ºC): 107-109

4. Boiling point ( ºC, normal pressure): 238

5. Refractive index: 1.4226

6. Flash point (ºC): 143

7. Solubility: slightly soluble In water, miscible with lower aromatics. Soluble in ether, acetone, methanol. Partially miscible with naphthenes, alkenes and paraffins.

Toxicological data

1. Acute toxicity: Rat oral LD50: >5 mg/kg; Rabbit Administration onto the skin LD50: >5 mg/kg;

Ecological data

None yet

Molecular structure data

1. Molar refractive index: 20.11

2. Molar volume (cm³/mol): 82.5

3. Isotonic specific volume (90.2K ): 194.9

4. Surface tension (dyne/cm): 31.0

5. Polarizability (10^-24cm³): 7.97

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): -0.4

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 42.5

7. Number of heavy atoms: 5

8. Surface charge: 0

9. Complexity: 85.3

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 sealed and stored in a cool, dry place away from light. ​

Synthesis method

It is obtained by oxidation of dimethyl sulfoxide with nitric acid. Oxidize dimethyl sulfoxide with nitric acid at 140-145°C. After the reaction is completed, cool it and filter it to obtain white needles.�Crystallized crude product. After further distillation under reduced pressure, the 138-145°C (98.42kPa) fraction is collected as the finished product.

Purpose

It is used as a high-temperature solvent for inorganic and organic substances; raw material for organic synthesis; raw material for food additives and health care products; it can also be used as gas chromatography stationary liquid (maximum operating temperature 30°C, solvent is acetone) and analytical reagent. High boiling point solvents, polar solvents, selective solvents for extractive distillation, electroplating bath solvents, ink and adhesive solvents.