154938
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154938
Sigma-Aldrich
Dimethyl sulfoxide
ACS spectrophotometric grade, ≥99.9%
| Synonym: | DMSO, Methyl sulfoxide |
| CAS Number: | 67-68-5 |
| Linear Formula: | (CH3)2SO |
| Molecular Weight: | 78.13 |
| Beilstein Registry Number: | 506008 |
| EC Number: | 200-664-3 |
| MDL number: | MFCD00002089 |
| PubChem Substance ID: | 24849315 |
Description
| Caution | Supercools easily and remelts slowly at room temperature. Solidified product can be re-liquified by warming to room temperature without detriment to the product. |
| Packaging | 100, 500 mL in glass btl |
| 1, 6×1, 2, 4×2, 4×4 L in glass btl |
Properties
| grade | ACS spectrophotometric grade |
| vapor density | 2.7 (vs air) |
| vapor pressure | 0.42 mmHg ( 20 °C) |
| assay | ≥99.9% |
| autoignition temp. | 573 °F |
| expl. lim. | 42 %± , 63 °F |
| total impurities | ≤0.001 meq/g Titr. acid |
| ≤0.100% water | |
| evapn. residue | ≤0.0100% |
| color | clear, colorless, liquid |
| refractive index | n |
| bp | 189 °C(lit.) |
| mp | 16-19 °C(lit.) |
| density | 1.10 g/mL(lit.) |
| λ | H2O reference |
| UV absorption | λ: 270 nm Amax: 0.40 |
| λ: 290 nm Amax: 0.18 | |
| λ: 310 nm Amax: 0.06 | |
| λ: 330 nm Amax: 0.02 | |
| λ: 350-400 nm Amax: 0.01 |
Safety
| Personal Protective Equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
| WGK Germany | 1 |
| RTECS | PV6210000 |
| UEL | 42.00%(V) |
| LEL | 3.50%(V) |
| Flash Point(F) | 188.6 °F |
| Flash Point(C) | 87 °C |
References
| Merck | Merck 13,3285 |
| Beilstein | Beil. 1,IV,1277 |
| Fieser | Fieser 1,296 / Fieser 2,157 / Fieser 3,119 / Fieser 4,192 / Fieser 5,263 / Fieser 6,225 / Fieser 7,133 / Fieser 8,198 / Fieser 9,184 / Fieser 9,189 / Fieser 10,166 / Fieser 11,214 / Fieser 12,212 / Fieser 13,124 / Fieser 16,149 |
| reference | Aldrich MSDS 1, 1308:D / Corp MSDS 1 (2), 2440:C / FT-IR 2 (1), 1492:B / FT-IR 1 (1), 879:A / FT-NMR 1 (1), 1417:A / IR-Spectra (3), 529:A / NMR-Reference 2 (2), 781:A / RegBook 1 (1), 1043:A / Sax 6, 1201 / Structure Index 1, 162:A:1 / Vapor Phase 3, 831:A |
