|
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| Producer, Manufacturer,
Supplier of |
| Dimethyl Sulphoxide |
|
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 |
| GRR
Code : |
0658 |
|
| CAS No : |
67-68-5 |
| CI No : |
|
| Molecular Formula
: |
C2H6OS |
| Molecular Weight
: |
78.13 |
| Description
: |
Clear , colourless liquid ·Miscible with water ·Hygroscopic ·D at 20/4: 1,1014 ·M. P.: 18,4 °C ·B. P.: 189 °C ·n20/D: 1,4770 ·Flash. P.: 95 °C ·Vap. press. at 20 °C 0,6 hPa ·Viscosity at 20 °C 2,0 mPas ·D. M. a 20 °C 3,9 Debye ·Dielec. constant at 20 °C 4,7 ·
APPLICATIONS: Analytical reagent,Synthesis reagent: Regioselective orthomethylthiomethylation of phenols using thionyl chloride ,DMSO is a powerful solvent for many inorganic ions , due to good solvation of cations.The counter-anions therefore have enhanced reactivity and this has led DMSO being used to increase both the nucleophilicity of anions and the strength of bases,In combination with a wide range of activating reagents , DMSO is a highly effective reagent for the oxidation of primary and secondary alcohols to carbonyl compounds, without over-oxidation to carboxylic acids,DMSO is converted by sodium hydride to its conjugate base "dimsyl sodium" which is a strong base used in the conversion of phosphonium salts to phosphoranes and for the preparation of 3-hydroxysulphoxides from epoxides which undergo elimination to alkenes on thermolysis ,The potassium derivate of DMSO is prepared by reaction with potassium ter-butoxide,Reaction with sodamide converts DMSO to its disodio-derivative which reacts with electrophiles such as alkyl halides and ketones |
| Website : |
|
| Synonyms : |
DMSO, Methylsulphoxide, Sulphinylbismethane, C2H6OS |
| Specifications
: |
| Specifications |
|
| Minimum assay (G.C.) |
99,9 % |
| Identity |
IR p/t. |
| Freezing point |
Z18,0°C |
| MAXIMUM LIMIT OF IMPURITIES |
|
| Insoluble matter in H2O |
p/t. |
| Non-volatile matter |
0,01 % |
| Dimethyl Sulfone (G.C.) |
0,1 % |
| Methanol (G.C.) |
0,05 % |
| Acidity |
0,001 meq/g |
| Water (H2O) |
0,1 % |
Metals by ICP [mg/Kg (ppm)]
|
|
| Ag |
0,05 |
| Al |
0,5 |
| As |
0,05 |
| Au |
0,05 |
| B |
0,02 |
| Ba |
0,1 |
| Be |
0,02 |
| Bi |
0,05 |
| Ca |
0,5 |
| Cd |
0,05 |
| Co |
0,02 |
| Cr |
0,02 |
| Cu |
0,02 |
| Fe |
0,1 |
| Ga |
0,02 |
| Ge |
0,05 |
| Hg |
0,05 |
| In |
0,05 |
| K |
0,1 |
| Li |
0,05 |
| Mg |
0,1 |
| Mn |
0,02 |
| Mo |
0,02 |
| Na |
0,5 |
| Ni |
0,02 |
| P |
0,2 |
| Pb |
0,1 |
| Pt |
0,02 |
| S |
0,2 |
| Sb |
0,02 |
| Si |
0,2 |
| Sn |
0,1 |
| Sr |
0,2 |
| Ti |
0,02 |
| Tl |
0,02 |
| V |
0,02 |
| Zn |
0,1 |
| Zr |
0,02 |
HAZARDOUS: RTECS: PV 6210000 · DL50 orl rat 14500 mg/Kg ·
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