A5449212
3-Methyl-1-butanol , AR,98.5% , 123-51-3
Synonym(s):
3-Methyl-1-butanol;Isoamyl alcohol;Isopentyl alcohol;iso-Pentyl alcohol, 3-Methyl-1-butanol, Iso-Amylalcohol
CAS NO.：123-51-3
Empirical Formula: C5H12O
Molecular Weight: 88.15
MDL number: MFCD00002934
EINECS: 204-633-5
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -117 °C |
| Boiling point: | 131-132 °C |
| Density | 0.809 g/mL at 25 °C(lit.) |
| vapor density | 3 (vs air) |
| vapor pressure | 2 mm Hg ( 20 °C) |
| refractive index | n |
| FEMA | 2057 | ISOAMYL ALCOHOL |
| Flash point: | 109.4 °F |
| storage temp. | room temp |
| solubility | 25g/l |
| form | Liquid |
| pka | >14 (Schwarzenbach et al., 1993) |
| Specific Gravity | 0.813 (15/4℃) |
| color | <20(APHA) |
| PH Range | 5.6 at 25 g/l at 20 °C |
| Odor | Mild odor; alcoholic, non-residual. |
| PH | 7 (25g/l, H2O, 20℃) |
| explosive limit | 1.2-9%, 100°F |
| Odor Threshold | 0.0017ppm |
| Odor Type | fermented |
| biological source | synthetic |
| Water Solubility | 25 g/L (20 ºC) |
| λmax | λ: 260 nm Amax: 0.06 λ: 280 nm Amax: 0.06 |
| JECFA Number | 52 |
| Merck | 14,5195 |
| BRN | 1718835 |
| Henry's Law Constant | 33.1 at 37 °C (Bylaite et al., 2004) |
| Exposure limits | NIOSH REL: TWA 100 ppm (360 mg/m3), IDLH 500 ppm; OSHA PEL: TWA
100 ppm; ACGIH TLV: TWA 100 ppm, STEL 125 ppm (adopted). |
| Dielectric constant | 15.3（23℃） |
| Stability: | Stable. Flammable. Incompatible with strong oxidizing agents, strong acids, acid chlorides, acid anhydrides. |
| LogP | 1.35 at 20℃ |
| Surface tension | 24.5mN/m at 293.15K |
| CAS DataBase Reference | 123-51-3(CAS DataBase Reference) |
| NIST Chemistry Reference | 1-Butanol, 3-methyl-(123-51-3) |
| EPA Substance Registry System | 3-Methyl-1-butanol (123-51-3) |
Description and Uses
3-Methyl-1-butanol is used as solvents for oils, fats, resins, and waxes; in the plastics industry in spinning polyacrylonitrile; and in manufacturing lacquers, chemicals, and pharmaceuticals. It is also used as flavoring agents and in fragrances. Industrial exposure is principally by the dermal contact and inhalation.
Safety
| Symbol(GHS) |    GHS02,GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H226-H315-H318-H332-H335 |
| Precautionary statements | P210-P233-P280-P303+P361+P353-P304+P340+P312-P305+P351+P338 |
| Hazard Codes | Xn |
| Risk Statements | 10-20-37-66-20/22-R20/22-R10 |
| Safety Statements | 46-16-S16 |
| RIDADR | UN 1105 3/PG 3 |
| OEB | A |
| OEL | TWA: 100 ppm (360 mg/m3), STEL: 125 ppm (450 mg/m3) |
| WGK Germany | 1 |
| RTECS | EL5425000 |
| Autoignition Temperature | 644 °F |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29335995 |
| Hazardous Substances Data | 123-51-3(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 7.07 ml/kg (Smyth) |
| IDLA | 500 ppm |
| Limited Quantities | 5.0 L (1.3 gallons) (liquid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) |
