5-Nonanone
Synonym(s):Dibutyl ketone;Valerone
- CAS NO.:502-56-7
- Empirical Formula: C9H18O
- Molecular Weight: 142.24
- MDL number: MFCD00009484
- EINECS: 207-946-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:20:29
What is 5-Nonanone?
Chemical properties
CLEAR COLOURLESS TO SLIGHTLY YELLOW LIQUID
Chemical properties
5-Nonanone is a stable and colorless-to-light yellow
liquid.
No human odor threshold was identified for 5-nonanone.
However, Laska et al. demonstrated using a conditioning
paradigm that the olfactory threshold of squirrel monkeys
and pigtail caques for 5-nonanone is below 1 ppb .
The Uses of 5-Nonanone
5-Nonanone is used in preparation of 6-(1,2,4-oxadiazol-5-yl)chroman-4-one derivatives as S1P1 receptor modulators and methods for preparing them.
Synthesis Reference(s)
Journal of the American Chemical Society, 89, p. 2738, 1967 DOI: 10.1021/ja00987a043
The Journal of Organic Chemistry, 52, p. 5570, 1987 DOI: 10.1021/jo00234a012
Tetrahedron Letters, 7, p. 6145, 1966
General Description
Colorless to light yellow liquid. Floats on water. Freezing point is 21°F.
Air & Water Reactions
Highly flammable.
Reactivity Profile
Ketones, such as 5-Nonanone, are reactive with many acids and bases liberating heat and flammable gases (e.g., H2). The amount of heat may be sufficient to start a fire in the unreacted portion of the ketone. Ketones react with reducing agents such as hydrides, alkali metals, and nitrides to produce flammable gas (H2) and heat. Ketones are incompatible with isocyanates, aldehydes, cyanides, peroxides, and anhydrides. They react violently with aldehydes, HNO3, HNO3 + H2O2, and HClO4. May attack some forms of plastics [USCG, 1999].
Health Hazard
Inhalation causes irritation of nose and throat. Ingestion causes irritation of mouth and stomach. Contact with eyes or skin causes irritation.
Chemical Reactivity
Reactivity with Water No reaction; Reactivity with Common Materials: May attack some forms of plastics; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
Biochem/physiol Actions
5-Nonanone induces clinical neuropathy in rats.
Properties of 5-Nonanone
| Melting point: | -50 °C (lit.) |
| Boiling point: | 186-187 °C (lit.) |
| Density | 0.826 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 141 °F |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Slightly soluble in water, soluble in alcohol and oils. |
| form | Liquid |
| color | Clear colorless to slightly yellow |
| Odor | Data not available. |
| Odor | Sweet Oakmoss-like penetrating odor with floral undertones. |
| Water Solubility | 256mg/L(25 ºC) |
| BRN | 1743583 |
| Dielectric constant | 10.6 |
| CAS DataBase Reference | 502-56-7(CAS DataBase Reference) |
| NIST Chemistry Reference | 5-Nonanone(502-56-7) |
| EPA Substance Registry System | 5-Nonanone (502-56-7) |
Safety information for 5-Nonanone
| Signal word | Warning |
| Pictogram(s) |
![]() Flame Flammables GHS02 |
| GHS Hazard Statements |
H227:Flammable liquids |
| Precautionary Statement Codes |
P403+P235:Store in a well-ventilated place. Keep cool. |
Computed Descriptors for 5-Nonanone
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