Dimethyl sulfoxide, Pharmpur®, Ph Eur, USP

- Synonyms: DMSO, Sulfinyl bis(methane), Methylsulfoxide, Methylsulfinylmethane
- C2H6OS
- M = 78,13 g/mol
- CAS [67-68-5]
- EINECS-No.: 200-664-3
- Density: 1,10 g/cm3
- Solub. in water: (20 ºC): miscible
- Melting point: 18,5 ºC
- Boiling point: (33 hPa) 85 - 87 ºC
- Flash pt. 95 ºC
- Ignition temp.: 300 - 302 ºC
- Vapour pressure: (20 ºC) 0,6 hPa
- Refraction index: (n 20 ºC/D) 1,48
- LD 50 (oral, rat): 14500 mg/kg
- GHS-signal word: Warning
- GHS-H sentences: H315 - H319
- GHS-P sentences: P280 - P264 - P305+P351+P338 - P321 - P332+P313 - P337+P313
- Tariff number: 2930 90 98 99
- Applications: analytical chemistry, solvents, synthesis of organic products.

SPECIFICATIONS
assay: min. 99,9 %
Identification IR: passes test
Identification B (USP): passes test
Identification D (EP): passes test
density (20º/20º): 1,100 - 1,104
density (25º/25º): 1,095 - 1,101
refractive index n20/D: 1,478 - 1,480
refractive index n25/D: 1,4755 - 1,4775
acidity: passes test
freezing point: min. 18,3 ºC

total : max. 0,1 %
each unspecified impurity: max. 0,1 %
residue on evaporation: max. 0,01 %
water (K.F.): max. 0,1 %

wavelength:: A (AU)
275 nm: 0,20
285 nm: 0,20
295 nm: 0,20

absorbance ratio 285/275 nm: max. 0,65
absorbance ratio 295/275 nm: max. 0,45

absorbance 270 - 350nm: passes test