Dimethyl Sulfoxide CAS No. 67-68-5
Category：Pharmaceutical Materials
Introduction
Multiple Names
DMSO;
Methyl Sulphoxide;
Methyl Sulfoxide Absolute Over Molecular Sieve (H2O<0.01%);
Diemthyl Sulfoxide;
Dimethyl Sulfoxide Bp;
Dimethyl Sulphoxide;
Dmso/Nmp (Dimethylsulfoxide/1-Methyl-2-Pyrrolidone);
Dimethylsulfoxide Sulfinylbis.
CAS No. 67-68-5
EC No. 200-664-3
MF No. C2H6OS
MW No. 78.12
Dimethyl sulfoxide, known as the “universal solvent”, is one of the most powerful organic solvents commonly used, and is widely used as solvent and reaction reagent, such as polyurethane synthesis and spinning solvent, polyamide, polyimide and polysulfone resin synthesis solvent.
Advantages of Dimethyl Sulfoxide CAS No. 67-68-5
Stronger solubility, low impurities, up to electronic level.
High selective extraction capacity.
Higher purity.
Names and Identifiers
| Name | Methyl sulfoxide |
| Synonyms | DMSO FEMA 3875 Methyl sulfoxide Diemthyl Sulfoxide Dimethyl sulfoxide DIMETHYL SULFOXIDE Dimethyl sulphoxide DIMETHYL SULPHOXIDE sulfinylbis (methane) DIMETHYLIS SULFOXIDUM Dimethyl Sulfoxide BP DMSO~Methyl sulphoxide Dimethylsulfoxide Sulfinylbis |
| CAS | 67-68-5 |
| EINECS | 200-664-3 |
| InChI | InChI=1/C2H6OS/c1-4(2)3/h1-2H3 |
| InChIKey | IAZDPXIOMUYVGZ-UHFFFAOYSA-N |
Physico-chemical Properties
| Molecular Formula | C2H6OS |
| Molar Mass | 78.13 |
| Density | 1.100g/mLat 20°C |
| Melting Point | 18.4 °C |
| Boling Point | 189°C(lit.) |
| Flash Point | 192°F |
| JECFA Number | 507 |
| Water Solubility | Soluble in water, methanol, acetone, ether, benzene, chloroform. |
| Solubility | H2O: miscible (completely) |
| Vapor Presure | 0.42 mm Hg ( 20 °C) |
| Vapor Density | 2.7 (vs air) |
| Appearance | Transparent liquid |
| Color | clear colorless |
| Odor | Mild garlic odor |
| Maximum wavelength(λmax) | [‘λ: 285 nm Amax: ≤0.20’, , ‘λ: 295 nm Amax: ≤0.20’] |
| Merck | 14,3259 |
| BRN | 506008 |
| pKa | 35(at 25℃) |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable. Incompatible with a very wide range of materials, including acid chlorides, strong acids, strong oxidizing agents, strong reducing agents, phosphorus halides, moisture, copper wool + trichloro |
| Sensitive | Hygroscopic |
| Explosive Limit | 1.8-63.0%(V) |
| Refractive Index | n20/D 1.479(lit.) |
| MDL | MFCD00002089 |
| Physical and Chemical Properties | Density 1.1 melting point 18.4-19.0°C boiling point 189°C refractive index 1.477-1.48 flash point 95°C |
| Use | Used as analytical reagents and gas chromatography stationary liquid, also used as a solvent for UV spectral analysis |
Risk and Safety
| Hazard Symbols | Xi – Irritant |
| Risk Codes | 36/37/38 – Irritating to eyes, respiratory system and skin. |
| Safety Description | S24/25 – Avoid contact with skin and eyes. S37/39 – Wear suitable gloves and eye/face protection S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 – Wear suitable protective clothing. S23 – Do not breathe vapour. |
| UN IDs | NA 1993 / PGIII |
| WGK Germany | 1 |
| RTECS | PV6210000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 29309070 |
| Toxicity | LD50 orally in rats: 17.9 ml/kg (Bartsch) |
