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: 2024-12-18 14:08:57
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 | n |
| 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. |
Computed Descriptors for CIS-DECAHYDRONAPHTHALENE
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