Tetrahydrofuran
SIAL/900636 - anhydrous, inhibitor-free, ZerO2®, ≥99.9%
Synonym: Degassed and low oxygen tetrahydrofuran; THF; Tetrahydrofuran ZerO2®; Butylene oxide; Oxolane; Tetramethylene oxide
CAS Number: 109-99-9
Empirical Formula (Hill Notation): C4H8O
Molecular Weight: 72.11
EC Number: 203-726-8
MDL Number: MFCD00005356
Linear Formula: C4H8O
Product Type: Chemical
| assay | ≥99.9% |
| autoignition temp. | 610 °F |
| bp | 65-67 °C (lit.) |
| density | 0.889 g/mL at 25 °C (lit.) |
| dilution | (for analytical testing) |
| expl. lim. | 1.8-11.8 % |
| form | liquid |
| grade | ZerO2® |
| impurities | ≤0.002% water water |
| InChI | 1S/C4H8O/c1-2-4-5-3-1/h1- |
| InChI key | WYURNTSHIVDZCO-UHFFFAOYSA |
| mp | −108 °C (lit.) |
| pH | ~7 |
| quality | anhydrous |
| Quality Level | 100  |
| refractive index | n |
| SMILES string | C1CCOC1 |
| vapor density | 2.5 (vs air) |
| vapor pressure | 114 mmHg ( 15 °C) |
| 143 mmHg ( 20 °C) |
| Application: | ZerO2 products are rigorously degassed with highly pure inert gas providing solvents and solutions (anhydrous if specified) with very low residual oxygen content. |
| Legal Information: | ZerO2 is a registered trademark of Sigma-Aldrich Co. LLC |
| Other Notes: | Greener alternatives are available for many THF applications, 2-Methyltetrahydrofuran (900520 ) |
| Symbol |    GHS02,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225 - H302 - H319 - H335 - H336 - H351 |
| Precautionary statements | P202 - P210 - P233 - P301 + P312 - P305 + P351 + P338 - P308 + P313 |
| RIDADR | UN 2056 3 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | -6.2 °F - closed cup |
| Flash Point(C) | -21.2 °C - closed cup |
| Supplemental Hazard Statements | EUH019 |
| Purity | ≥99.9% |
| bp | 65-67 °C (lit.) |
| mp | −108 °C (lit.) |
| Density | 0.889 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352005 |