Toluene diisocyanate manufacturer Knowledge Dimethyl sulfone Dimethyl sulfone

Dimethyl sulfone Dimethyl sulfone

Dimethyl sulfone structural formula

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.

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