CIS-DECAHYDRONAPHTHALENE

Synonym(s):cis-Decalin

CAS NO.：493-01-6
Empirical Formula: C10H18
Molecular Weight: 138.25
MDL number: MFCD00064189
EINECS: 207-770-9
SAFETY DATA SHEET (SDS)
Update Date: 2024-07-11 19:21:31

What is CIS-DECAHYDRONAPHTHALENE?

Chemical properties

colourless liquid

The Uses of CIS-DECAHYDRONAPHTHALENE

cis-Decahydronaphthalene is used as a quantitation standard in the determination of sesquiterpanes.

Definition

ChEBI: Decalin is an ortho-fused bicyclic hydrocarbon that is the decahydro- derivative of naphthalene. It has a role as a solvent.

Purification Methods

Purification methods described for the mixed isomers are applicable here. The individual isomers can be separated by very efficient fractional distillation, followed by fractional crystallisation by partial freezing. The cis-isomer reacts preferentially with AlCl3 and can be removed from the trans-isomer by stirring the mixture with a limited amount of AlCl3 for 48hours at room temperature, filtering and distilling. [Seyer & Walker J Am Chem Soc 60 2125 1938, Baker & Schuetz J Am Chem Soc 69 1250 1949.] A very pure authentic sample is best obtained by synthesis from cis-1,2-bis-chloroethylcyclohexane [Whitesides & Gutowski J Org Chem 41 2882 1976, Beilstein 5 IV 310.]

Properties of CIS-DECAHYDRONAPHTHALENE

Melting point:	−43 °C(lit.)
Boiling point:	193 °C(lit.)
Density	0.897 g/mL at 25 °C(lit.)
vapor density	4.76 (vs air)
vapor pressure	42 mm Hg ( 92 °C)
refractive index	n20/D 1.481(lit.)
Flash point:	137 °F
storage temp.	Sealed in dry,Room Temperature
form	clear liquid
color	Colorless to Almost colorless
explosive limit	0.7-4.9%, 100°F
Water Solubility	8.92g/L(300 ºC)
Merck	14,2846
BRN	1900822
Dielectric constant	2.2（20℃）
Stability:	Stable. Incompatible with oxidizing agents. May form explosive peroxides. Heat and light accelerate peroxide formation.
CAS DataBase Reference	493-01-6(CAS DataBase Reference)
EPA Substance Registry System	cis-Decahydronaphthalene (493-01-6)

Safety information for CIS-DECAHYDRONAPHTHALENE

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Corrosion Corrosives GHS05 Skull and Crossbones Acute Toxicity GHS06 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H226:Flammable liquids H304:Aspiration hazard H314:Skin corrosion/irritation H331:Acute toxicity,inhalation H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.