Dimethyl Sulfoxide

Dimethyl sulphoxide; C₂H₆OS = 78.1 (67-68-5)

Of the British Pharmacopoeia.

Dimethyl sulfoxide used in spectrophotometry complies with the following additional test.

Absorbance (2.2.25) Maximum 1.00 at 262 nm, 0.46 at 270 nm, 0.16 at 290 nm, 0.01 at 340 nm and higher wavelengths, determined using water as compensation liquid.