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HomeProduct name listbeta-Tetralone

beta-Tetralone

Synonym(s):3,4-Dihydro-2(1H)-naphthalenone;3,4-Dihydro-2-naphthol;beta-Tetralone

  • CAS NO.:530-93-8
  • Empirical Formula: C10H10O
  • Molecular Weight: 146.19
  • MDL number: MFCD00001727
  • EINECS: 208-498-3
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-30 20:13:01
beta-Tetralone Structural

What is beta-Tetralone?

Chemical properties

Liquid colorless to yellow

The Uses of beta-Tetralone

β-Tetralone is the 2-keto derivative of Tetralin. β-Tetralone was initially reported to be a metabolite of Tetralin but was later found to be just an artifact in the metabolism process. β-Tetralone is known to be biological marker in fossil fuels.

Synthesis Reference(s)

The Journal of Organic Chemistry, 26, p. 4232, 1961 DOI: 10.1021/jo01069a014

Purification Methods

If reasonably pure, then fractionate it through an efficient column. Otherwise purify it via the bisulfite adduct. To a solution of NaHSO3 (32.5g, 0.31mol) in H2O (57mL) is added 95% EtOH (18mL) and set aside overnight. Any bisulfite-sulfate that separated is removed by filtration, and the filtrate is added to the tetralone (14.6g, 0.1mol) and shaken vigorously. The adduct separates in a few minutes as a white precipitate and is kept on ice for ~3.5hours with occasional shaking. The precipitate is collected, washed with 95% EtOH (13mL), then with Et2O (4 x 15mL, by stirring the suspension in the solvent, filtering and repeating the process). The colourless product is dried in air and stored in air tight containers in which it is stable for extended periods (yield is ~17g). This bisulfite (5g) is suspended in H2O (25mL), and Na2CO3.H2O (7.5g) is added (pH of solution is ~10). The mixture is then extracted with Et2O (5 x 10mL, i.e. until the aqueous phase does not test for tetralone — see below). Wash the combined extracts with 10% aqueous HCl (10mL), H2O (10mL, i.e. until the washings are neutral), dry (MgSO4), filter, evaporate and distil the residual oil using a Claisen flask under reduced pressure and in a N2 atmosphere. The pure tetralone is a colourless liquid b 70-71o/0.25mm (see also above). The yield is ~2g. Tetralone test: Dissolve a few drops of the tetralone solution (ethereal or aqueous) in 95% EtOH in a test tube and add 10 drops of 25% NaOH down the side of the tube. A deep blue colour develops at the interface with air. [Soffer et al. Org Synth Coll Vol IV 903 1963, Cornforth et al. J Chem Soc 689 1942, UV: Soffer et al. J Am Chem Soc 1556 1952.] The phenylhydrazone has m 108o [Crawley & Robinson J Chem Soc 2001 1938]. [Beilstein 7 H 370, 7 II 295, 7 III 1422, 7 IV 1018.]

Properties of beta-Tetralone

Melting point: 18 °C(lit.)
Boiling point: 131 °C11 mm Hg(lit.)
Density  1.106 g/mL at 25 °C(lit.)
refractive index  n20/D 1.560(lit.)
Flash point: >230 °F
storage temp.  2-8°C
solubility  Chloroform (Slightly), Ethyl Acetate (Slightly)
form  Liquid or Low Melting Solid
color  Clear pale yellow
Water Solubility  insoluble
Sensitive  Air Sensitive
BRN  509386
CAS DataBase Reference 530-93-8(CAS DataBase Reference)
NIST Chemistry Reference 2(1H)-Naphthalenone, 3,4-dihydro-(530-93-8)
EPA Substance Registry System 2-Tetralone (530-93-8)

Safety information for beta-Tetralone

Signal word Danger
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
ghs
Health Hazard
GHS08
ghs
Environment
GHS09
GHS Hazard Statements H315:Skin corrosion/irritation
H372:Specific target organ toxicity, repeated exposure
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P391:Collect spillage. Hazardous to the aquatic environment
P501:Dispose of contents/container to..…

Computed Descriptors for beta-Tetralone

InChIKey KCKZIWSINLBROE-UHFFFAOYSA-N

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