alpha-TETRALONE

PRODUCT IDENTIFICATION
CAS NO. 529-34-0

alpha-TETRALONE
EINECS NO.

208-460-6
FORMULA C10H10O
MOL WT. 146.19

H.S. CODE

 2914.39.0090

TOXICITY

 Oral rat LD50: 810 mg/kg
SYNONYMS 1-Tetralone; 3,4-Dihydro-1(2H)-naphthalenone; 1-Oxotetralin;
1,2,3,4-Tetrahydro-1-naphthalenone; 1,2,3,4-Tetrahydronaphthalin-1-on (German); 1,2,3,4-tetrahidronaftalen-1-ona (Spanish); 1,2,3,4-tétrahydronaphtalène-1-one (French);

SMILES

c12c(C(CCC1)=O)cccc2

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE clear to yellow liquid

MELTING POINT

 5 - 6 C
BOILING POINT 255 - 257 C
SPECIFIC GRAVITY 1.09 - 1.10

SOLUBILITY IN WATER

 Insoluble (475mg/l at 25 C))
pH

 
VISCOSITY  
AUTOIGNITION

 
pKa (Dissociation Constant at 20 C)
log Pow 2.60 (Octanol-water)
VAPOR PRESSURE 0.014 (mmHg at 25 C)
HENRY'S LAW 6.34E-06 (atm-m3/mole at 25 C)
OH RATE 1.09E-11 (cm3/molecule-sec at 25 C Atmospheric )

REFRACTIVE INDEX

1.5685
NFPA RATINGS  
FLASH POINT

130 C
STABILITY Stable under normal conditions.

GENERAL DESCRIPTION & APPLICATIONS
Decalin and tetralin are the terms that indicate decahydro- or tetrahydroanaphthalene respectively. They are bicyclic organic compounds; clear liquid used as solvents for resins. Hydroanaphthalenes are produced by hydrogenation of naphthalene in the presence of a catalyst (platinum catalyst).  The commercial decalin is the mixture of cis- and trans- isomers  (typically 77:23) . The trans-isomer is more stable because of less steric interactions. Hydroanaphthalenes are used as industrial solvents for naphthalene, resins, oils, and waxes. It features high boiling point and thermal stability. They are used as components of stove and jet fuels. Hydronaphthalenes are also used as raw materials of functional polymers. They are used in preparing dyes, plasticizers, and insecticides. They are also used in heat transfer fluid, dye carrier,  fuel additives, lubricants, ore flotation and oilfield chemicals. These bicyclic compounds are moieties in transition-metal complex catalysts.

Tetralone is a keto-hydroanaphthalene used as a reactive intermediate which is converted to target compounds including dyes, drugs (contraceptives), and agrochemicals. The alpha-tetralone has carbonyl group on the ring at 1 position while beta-tetralone at 2 position. The different positions provide various chemical structures which offer important roles to colours. Tetralone derivatives find extensive applications in color industry. It is also used in preparing pesticides.

Wikipedia Linking: http://en.wikipedia.org/wiki/Tetralone

http://www.orgsyn.org/
Other methods of preparation have been reviewed in earlier volumes. The method consisting of air oxidation of tetralin has in some cases been aided by the use of copper oxide4 or sulfate, and has been said to yield a product which is contaminated with メ-tetralol. The ketone has also been prepared from ャ-phenylbutyric acid by cyclization with phosphoric acid-phosphoric anhydride and with hydrofluoric acid, and from ャ-phenylbutyryl chloride by the action of aluminum chloride. The method described is essentially that of Synder and Werber...   ....メ-Tetralone has been obtained from the catalytic hydrogenation of メ-naphthol; from ャ-phenylbutyryl chloride and aluminum chloride; from ャ-phenylbutyric acid and concentrated sulfuric acid; and by the oxidation of tetralin with chromic anhydride or with atmospheric oxygen.5 Detailed directions for preparing メ-tetralone by this last-named method are given in Org. Syn. 20, 94....
SALES SPECIFICATION

APPEARANCE

 clear to yellow liquid

CONTENT

98.0% min

MELTING POINT

 5 - 6 C
TRANSPORTATION
PACKING 200kgs in drum
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 20/22, Safety Phrases: 36/37