Dimethyl sulfone Dimethyl sulfone
Structural formula
| Business number | 01EY |
|---|---|
| Molecular formula | C2H6O2S |
| Molecular weight | 94.13 |
| label |
Methyl sulfone, DMSO2, high boiling point solvents, polar solvents, Selective solvent for extractive distillation, Plating bath solvent |
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.
