Home Categories Organic Chemistry 3-Methyl-1-butanol
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  n20/D 1.407
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
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℃
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

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