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Dimethyl Sulfoxide
(CAS RN:67-68-5 Product Number:D0798)

Structure

Dimethyl Sulfoxide
Synonym DMSO

General Information

Product Number D0798

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Purity/Analysis Method >99.0%(GC)
Storage Temperature
M.F. / M.W. C2H6OS=78.13
CAS RN 67-68-5
Related CAS RN
MDL Number MFCD00002089
Packaging and Container
  • Product Details
  • Safety & Regulations

Specification

Purity(GC) min. 99.0 %
Specific gravity (20/20) 1.1010 to 1.1050
Refractive index n20/D 1.4770 to 1.4800

Data of Reference

flp 95°C(lit.)
bp 189°C(lit.)

References

Beilstein 1,289
Reaxys-RN 506008
PubChem SID 87567421
Merck Index(14) 3259
F&F 10,165
RTECS# PV6210000
EC Number 200-664-3

GHS

Pictogram
Signal Word Warning
Hazard Statements
  • H319
  • :Causes serious eye irritation.
  • H373
  • :May cause damage to Liver, Blood through prolonged or repeated exposure.
Precautionary Statements
  • P260
  • :Do not breathe mist, vapours or spray.
  • P264
  • :Wash hands and face thoroughly after handling.
  • P280
  • :Wear eye protection.
  • P305+P351+P338+P337+P313
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.
  • P314
  • :Get medical advice or attention if you feel unwell.
  • P501
  • :Dispose of contents/container through a waste management company authorized by the local government.

Transport Information

HS Number 2930909899

Application

Pfitzner-Moffat Oxidation

Typical Procedure:
To a stirred solution of alcohol 1 (913 mg, 3.06 mmol) in benzene (85 mL) are added DMSO (1.31 mL, 18.4 mmol), pyridine (0.37 mL, 4.6 mmol), CF3COOH (0.35 mL, 4.6 mmol), and dicyclohexylcarbodiimide (1.89 g, 9.2 mmol). After being stirred for 30 min, the resulting white solids are filtered off. The filtrate is diluted with AcOEt (500 mL), and this is wshed with H2O (100 mL). The organic phase is dried over Na2SO4 and concentrated in vacuo. To the residue is added a small amount of AcOEt, and the precipitates are filtered off. The filtrate is concentrated in vacuo to give crude tetrahydrofuranone 2, which is reduced directly. The residue is dissolved in MeOH (20 mL), and NaBH4 (174 mg, 4.6 mmol) is added. After being stirred for 1 h, the mixture is neutralized with Amberlite IR-120 (H+). The resin is removed by filtration and washed with MeOH. The combined filtrate and washings are concentrated in vacuo. The residue is purified by flash column chromatography (SiO2, AcOEt : Toluene = 1 : 20) to give the epi alcohol 3 (758 mg, Y. 83%) as white crystals.

References

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