2-Methyl-2-butanol
SIAL/721123 - anhydrous, ≥99%
Synonym: tert-Amyl alcohol; tert-Pentyl alcohol
CAS Number: 75-85-4
Empirical Formula (Hill Notation): C5H12O
Molecular Weight: 88.15
EC Number: 200-908-9
MDL Number: MFCD00004478
Linear Formula: CH3CH2C(CH3)2OH
Product Type: Chemical
| assay | ≥99% |
| autoignition temp. | 819 °F |
| bp | 102 °C (lit.) |
| density | 0.805 g/mL at 25 °C (lit.) |
| evapn. residue | ≤0.0005% |
| expl. lim. | 9 % |
| form | liquid |
| grade | anhydrous |
| impurities | ≤0.003% water (Karl Fischer, all unit sizes greater than 100 mL) |
| ≤0.005% water (100 mL pkg) | |
| InChI | 1S/C5H12O/c1-4-5(2,3)6/h6 |
| InChI key | MSXVEPNJUHWQHW-UHFFFAOYSA |
| mp | −12 °C (lit.) |
| pH | 6.0 (20 °C, 118 g/L) |
| Quality Level | 100 ![]() |
| refractive index | n |
| SMILES string | CCC(C)(C)O |
| vapor density | 3 (vs air) |
| Application: | tert-Amyl alcohol is useful as organic solvent chemical intermediates for gasoline fuel additives, food flavor, pharmaceutical peroxy esters, ink composition, and stabilizer in rubber productions. |
| Packaging: | 1 L in Sure/Seal™ |
| Packaging: | 100 mL in Sure/Seal™ |
| Symbol | ![]() ![]() GHS02,GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H225 - H312 + H332 - H315 - H318 - H335 |
| Precautionary statements | P210 - P233 - P280 - P303 + P361 + P353 - P304 + P340 + P312 - P305 + P351 + P338 |
| Hazard Codes | F,Xn |
| Risk Statements | 11-20-21-37/38-41 |
| Safety Statements | 26-36/37-39-46 |
| RIDADR | UN1105 - class 3 - PG 2 - Pentanols |
| WGK Germany | WGK 1 |
| Flash Point(F) | 68.9 °F - closed cup |
| Flash Point(C) | 20.5 °C - closed cup |
| Purity | ≥99% |
| bp | 102 °C (lit.) |
| mp | −12 °C (lit.) |
| Density | 0.805 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352001 |




