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Dimethyl sulphoxide USP/Ph.Eur 1KG
97260LR100336757102BU
USP/Ph.Eur3367571
67-68-571691
C2H6OSFebruary 2021
78.13January 2024
Sr.No.TestResultSpecification
1Appearance/DescriptionA clear, colorless, odorless, hygroscopic liquid. Melts at 18.4°C. Boils at 189°CA clear, colorless, odorless, hygroscopic liquid or crystals. Melts about 18.4°C. Boils at about 189°C.
2SolubilityPassesSoluble in water. Miscible with ethanol ; practically insoluble in acetone, in benzene, in chloroform and in ether.
3Identification (By IR)CompliesIR spectra of the sample should be concomittant with IR pectra of the corresponding standard
4Identification (By chemical test 1)CompliesA deep violet, crystalline solid should obtaine which should soluble in chloroform, yielding a red solution.
5Identification (By chemical test 2)CompliesThe colour changes to green or bluish-green. Cool. The colour changes to greenish-yellow.
6Identification (by Relative density, 20°C)1.1011.100-1.104
7Identification (By Refractive index, 20±0.5°C)1.4791.478-1.480
8Specific gravity, 25°C1.096Between 1.095 to 1.101
9Relative density,20°C1.1011.100-1.104
10Refractive index (20°C ± 0.5°C)1.4791.478-1.480
11Refractive index, 25°C1.47701.4755-1.4775
12Freezing point18.4°CMin. 18.3°C
13Acidity0.3ml of 0.01N sodium hydroxideNot more than 5.0ml of 0.01N sodium hydroxide should consume
14Water0.081%Not more than 0.1%
15UV absorbance profile (10mm cell)@270nm-350nmCompliesThe spectrum is smooth with no absorption maxima.
16UV absorbance ratio (A285nm/A275nm)0.37Not more than 0.65
17UV absorbance ratio (A295nm/A275nm)0.21Not more than 0.45
18UV absorbance profile (10mm cell)@275nm0.101Not more than 0.20
19UV absorbance profile (10mm cell)@285nm0.037Not more than 0.20
20UV absorbance profile (10mm cell)@295nm0.021Not more than 0.20
21Limit of Non volatile residue0.006%Not more than 0.01%
22Related substances, unspecified impurities0.001%0.10% max.
23Related compunds / Related substances - Total impurities0.01%0.10% max.
24Assay (on Anhydrous basis)99.99%Not less than 99.9%
Remarks: THE CAPTIONED MATERIAL COMPLIES WITH THE PRESCRIBED QUALITY OF USP AND PH.EUR SPECIFICATION.
FINAR provides this analytical report in good faith and to the best of its knowledge. It should not be substituted for the users own raw material quality control.
Tested By
(Chemist - Quality Control)
Approved By
(Head - Quality Control)
Computer Generated Report - Does not require Signature.
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