2-Hexanone

CAS No. 591-78-6

Formula: C6H12O
Basic Info

2-Hexanone (methyl butyl ketone, MBK) is a ketone used as a general solvent and in paints. It dissolves cellulose nitrate, vinyl polymers and copolymers, and natural and synthetic resins. It is recommended as a solvent because it is photochemically inactive; however it has a very low safe threshold limit value (MAK value). 2-Hexanone is absorbed through the lungs, orally and dermally and its metabolite, 2,5-hexanedione, is neurotoxic. Animal tests have shown that the neurotoxic effect of 2-hexanone may be potentiated by simultaneous administration of 2-butanone (methyl ethyl ketone, MEK).

Formula
C6H12O
Molecular Weight
100.159
Exact Mass
100.089
LogP
1.7656
PSA
17.07
Synonyms

methyl n-butyl ketone

Hexan-2-on

n-C4H9COCH3

2-Ketohexane

MBK

n-butyl methyl ketone

MNBK

2-Oxohexane

Hexanone-2

2-Hexanon

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Properties
Appearance & Physical State
colorless to pale yellow liquid
Density
0.81
Boiling Point
127ºC
Melting Point
-57ºC
Flash Point
23ºC
Refractive Index
1.3995-1.4015
Water Solubility
2 g/100 mL (20 ºC)
Stability
Stable. Flammable. Incompatible with oxidizing agents, strong bases, reducing agents.
Storage Condition
2-8ºC
Vapor Pressure
10 mm Hg ( 39 °C)
Safety Info
RTECS
MP1400000
Safety Statements
S36/37-S45
WGK Germany
1
Risk Statements
R10; R48/23; R62; R67
RIDADR
UN 1224
Hazard Class
3
Packing Group
II
Hazard Codes
Spectrum
NMR Spectrum 13C NMR : in CDCl3
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IR Spectrum IR : liquid film
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Mass Spectrum Mass spectrum (electron ionization)
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Raman Spectrum Raman : 4880 A,200 M,liquid
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Toxicity
SKIN/EYE IRRITATION DATA
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Type of Test
Standard Draize test
Exposure Route
Administration onto the skin
Species Observed
Rodent - rabbit
Dose/Duration
500 mg/24H
Toxic Effects
--
Reference
Prehled Prumyslove Toxikologie; Organicke Latky, Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,283,1986
SKIN/EYE IRRITATION DATA
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Type of Test
Standard Draize test
Exposure Route
Administration into the eye
Species Observed
Rodent - rabbit
Dose/Duration
500 mg/24H
Toxic Effects
--
Reference
Prehled Prumyslove Toxikologie; Organicke Latky, Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,283,1986
ACUTE TOXICITY DATA
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Type of Test
TCLo - Lowest published toxic concentration
Exposure Route
Inhalation
Species Observed
Human
Dose/Duration
1000 ppm
Toxic Effects
Sense Organs and Special Senses (Eye)--effect, not otherwise specified<br>Behavioral--headache<br>Gastrointestinal--nausea or vomiting
Reference
Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. (National Assoc. of Printing Ink Research Institute, Francis McDonald Sinclair Memorial Laboratory, Lehigh Univ., Bethlehem, PA 18015) Volume(issue)/page/year: 1,78,1974

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