Name | DL-3-Methyl-2-butanol |
Synonyms | (CH3)2CHCH(OH)CH3 3-methyl-2-butano SEC-ISOAMYL ALCOHOL 3-methyl-butan-2-ol 2-Butanol,3-methyl- 3-Methyl butan-2-ol DL-3-Methyl-2-butanol secondaryisoamylalcohol (±)-3-methyl-butan-2-ol (R,S)-3-Methyl-butan-2-ol |
CAS | 598-75-4 |
EINECS | 209-950-2 |
InChI | InChI=1/C5H12O/c1-4(2)5(3)6/h4-6H,1-3H3 |
Molecular Formula | C5H12O |
Molar Mass | 88.15 |
Density | 0.818 g/mL at 25 °C (lit.) |
Melting Point | -51.44°C (estimate) |
Boling Point | 112 °C (lit.) |
Flash Point | 80°F |
JECFA Number | 300 |
Water Solubility | Miscible in Ether, Alcohols. Slightly soluble in water. (2.8g/100mL, 30°C) |
Solubility | 56g/l |
Appearance | Liquid |
Color | Clear colorless |
Exposure Limit | NIOSH: IDLH 500 ppm; TWA 100 ppm(360 mg/m3); STEL 125 ppm(450 mg/m3) |
Merck | 14,6031 |
BRN | 1718800 |
pKa | 15.17±0.20(Predicted) |
Storage Condition | Flammables area |
Explosive Limit | 1.2-10.5%(V) |
Refractive Index | n20/D 1.409(lit.) |
Physical and Chemical Properties | Colorless liquid. Boiling point 113-114 ℃, relative density 0.819(19 ℃), refractive index 1.4091(20 ℃). Flash point 26 ℃. Miscible with alcohol and ether, slightly soluble in water (30 ℃,2.8g/100g). |
Hazard Symbols | Xn - Harmful |
Risk Codes | R10 - Flammable R20 - Harmful by inhalation R37 - Irritating to the respiratory system R66 - Repeated exposure may cause skin dryness or cracking |
Safety Description | 46 - If swallowed, seek medical advice immediately and show this container or label. |
UN IDs | UN 1105 3/PG 3 |
WGK Germany | 1 |
TSCA | Yes |
HS Code | 29051490 |
Hazard Class | 3 |
Packing Group | III |
FEMA | 3703 | 3-METHYL-2-BUTANOL |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
toxicity | GRAS(FEMA). |
usage limit | FEMA(mg/kg): frozen dairy products, gel products, pudding, alcoholic beverages, 5.0; Alcohol-free beverage 1.0; Jam, jelly, hard candy, 10.0; Baked products 20.0. |
use | solvent. |
production method | add a solution of 600 g2-bromopropane and 300ml of ether dropwise to a mixture of 250ml of ether and 146g of magnesium quietly, cool the reactants to -5 ℃, and slowly add 200g of solution of acetaldehyde and 250ml of ether. Pour the reaction mixture into 2kg of crushed ice to decompose magnesium salt, remove excess magnesium by decantation, and dissolve alkaline magnesium halide with 15% sulfuric acid. Dipose the ether layer, fractionate, and collect the 110-111.5 ℃ fraction to obtain 210-215g3-methyl-2-butanol with a yield of 53-54%. |