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33064

Sigma-Aldrich

2-Methyl-1-propanol

puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99% (GC)

Synonym(s):

Isobutanol, Isobutyl alcohol

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About This Item

Linear Formula:
(CH3)2CHCH2OH
CAS Number:
78-83-1
Molecular Weight:
74.12
Beilstein/REAXYS Number:
1730878
EC Number:
201-148-0
MDL number:
MFCD00004740
UNSPSC Code:
12352001
PubChem Substance ID:
329754451

grade

ACS reagent
puriss. p.a.

Quality Level

200

agency

reag. Ph. Eur.

vapor density

2.55 (vs air)

vapor pressure

8 mmHg ( 20 °C)
8.8 mmHg ( 0 °C)

assay

≥99% (GC)

form

liquid

autoignition temp.

801 °F

expl. lim.

10.6 %

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

refractive index

n20/D 1.3950-1.3960
n20/D 1.396 (lit.)

bp

108 °C (lit.)

mp

−108 °C (lit.)

density

0.803 g/mL at 25 °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

SMILES string

CC(C)CO

suitability

passes test for reaction against H2SO4

InChI

1S/C4H10O/c1-4(2)3-5/h4-5H,3H2,1-2H3

InChI key

ZXEKIIBDNHEJCQ-UHFFFAOYSA-N

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General description

2-Methyl-1-propanol (Isobutyl alcohol) is widely used organic solvent.

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.

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

target_organs

Central nervous system, Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

82.4 °F - closed cup

flash_point_c

28 °C - closed cup

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Mechanistic studies of the catalytic dehydration of isobutyl alcohol on NaH-ZSM-5.
Williams C, et al.
J. Chem. Soc., Faraday Trans., 86(20), 3473-3485 (1990)
Determination of inorganic phosphate.
Martin JB and Doty DM.
Analytical Chemistry, 21(8), 965-967 (1949)
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