2-Methyl-1-propanol
SIGALD/33064 - puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99% (GC)
Synonym: Isobutanol; Isobutyl alcohol
CAS Number: 78-83-1
Empirical Formula (Hill Notation): C4H10O
Molecular Weight: 74.12
EC Number: 201-148-0
MDL Number: MFCD00004740
Linear Formula: (CH3)2CHCH2OH
Product Type: Chemical
| agency | reag. Ph. Eur. |
| assay | ≥99% (GC) |
| autoignition temp. | 801 °F |
| bp | 108 °C (lit.) |
| cation traces | Al: ≤0.5 mg/kg |
| B: ≤0.02 mg/kg | |
| Ba: ≤0.1 mg/kg | |
| Ca: ≤0.5 mg/kg | |
| Cd: ≤0.05 mg/kg | |
| Co: ≤0.02 mg/kg | |
| Cr: ≤0.02 mg/kg | |
| Cu: ≤0.02 mg/kg | |
| Fe: ≤0.1 mg/kg | |
| Mg: ≤0.1 mg/kg | |
| Mn: ≤0.02 mg/kg | |
| Ni: ≤0.02 mg/kg | |
| Pb: ≤0.1 mg/kg | |
| Sn: ≤0.1 mg/kg | |
| Zn: ≤0.1 mg/kg | |
| density | 0.803 g/mL at 25 °C (lit.) |
| expl. lim. | 10.6 % |
| form | liquid |
| grade | ACS reagent |
| puriss. p.a. | |
| impurities | ≤0.001% non-volatile matter |
| ≤0.001% peroxides (as H2O2) | |
| ≤0.004% free acid (as C3H7COOH) | |
| ≤0.005% iso-butyraldehyd (GC) | |
| ≤0.005% n-butyraldehyde (GC) | |
| ≤0.02% butanone | |
| ≤0.05% 2-butanol | |
| ≤0.05% water (Karl Fischer) | |
| ≤0.1% 1-butanol | |
| InChI | 1S/C4H10O/c1-4(2)3-5/h4-5 |
| InChI key | ZXEKIIBDNHEJCQ-UHFFFAOYSA |
| mp | −108 °C (lit.) |
| Quality Level | 200 ![]() |
| refractive index | n |
| n |
|
| SMILES string | CC(C)CO |
| suitability | passes test for reaction against H2SO4 |
| technique(s) | GC/GC: suitable |
| vapor density | 2.55 (vs air) |
| vapor pressure | 8 mmHg ( 20 °C) |
| 8.8 mmHg ( 0 °C) |
| Application: | 2-Methyl-1-propanol (Isobutyl alcohol) may be used to prepare the isobutyl alcohol-benzene solution for use in the quantification of inorganic phosphates. It may be used for the estimation of phosphate (inorganic phosphorous) by a colorimetric method. |
| General description: | 2-Methyl-1-propanol (Isobutyl alcohol) is widely used organic solvent. |
| Symbol | ![]() ![]() GHS02,GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H226 - H315 - H318 - H335 - H336 |
| Precautionary statements | P210 - P233 - P240 - P280 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | Xi |
| Risk Statements | 10-37/38-41-67 |
| Safety Statements | 7/9-13-26-37/39-46 |
| RIDADR | UN1212 - class 3 - PG 3 - Isobutanol |
| WGK Germany | WGK 1 |
| Flash Point(F) | 82.4 °F - closed cup |
| Flash Point(C) | 28 °C - closed cup |
| Purity | ≥99% (GC) |
| bp | 108 °C (lit.) |
| mp | −108 °C (lit.) |
| Density | 0.803 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352001 |




