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Dimethyl sulphoxide USP/Ph.Eur 2.5LT
97260LC250322777104GT
USP/Ph.Eur3227771
67-68-565495
C2H6OSJuly 2020
78.13June 2023
Sr.No.TestResultSpecification
1Appearance/DescriptionA clear, colorless, odorless, hygroscopic liquid. Melts 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°C1.47621.4755-1.4775
12Freezing point18.4°CMin. 18.3°C
13AcidityCompliesNot more than 5.0ml of 0.01N sodium hydroxide should consume
14Water0.042%Not more than 0.1%
15UV absorbance profile (10mm cell)@270nm-350nmCompliesThe spectrum is smooth with no absorption maxima.
16UV absorbance ratio (A285nm/A275nm)0.53Not more than 0.65
17UV absorbance ratio (A295nm/A275nm)0.32Not more than 0.45
18UV absorbance profile (10mm cell)@275nm0.1775Not more than 0.20
19UV absorbance profile (10mm cell)@285nm0.0948Not more than 0.20
20UV absorbance profile (10mm cell)@295nm0.0572Not more than 0.20
21Limit of Non volatile residue0.0048%Not more than 0.01%
22Related substances, unspecified impurities0.001%0.10% max.
23Related compunds / Related substances - Total impurities0.0015%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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