Name | 1-Octadecene |
Synonyms | Dialen 18 1-Octadecane 1-Octadecene 1-OCTADECENE α-Octadecylene 1-Octadecene, tech-95 1-Octadecene [Standard Material for GC] |
CAS | 112-88-9 |
EINECS | 204-012-9 |
InChI | InChI=1/C18H36/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3H,1,4-18H2,2H3 |
InChIKey | CCCMONHAUSKTEQ-UHFFFAOYSA-N |
Molecular Formula | C18H36 |
Molar Mass | 252.48 |
Density | 0.789g/mLat 25°C(lit.) |
Melting Point | 14-16°C(lit.) |
Boling Point | 179°C15mm Hg(lit.) |
Flash Point | 300°F |
Water Solubility | Miscible with alcohol, acetone and ether. Immiscible with water. |
Vapor Presure | 1.3 hPa (20 °C) |
Vapor Density | 0.71 (vs air) |
Appearance | Liquid |
Specific Gravity | 0.789 |
Color | Clear colorless to amber |
BRN | 1761067 |
Storage Condition | Store below +30°C. |
Refractive Index | n20/D 1.444(lit.) |
Physical and Chemical Properties | Colorless liquid. Melting Point 18 °c (17.5 °c), boiling point 179 °c (2kPa),144-146 °c (0.4kPa), relative density 0.7891(20/4 °c), refractive index 1.4448, flash point 148 °c. Soluble in hot propanol, insoluble in water. |
Hazard Symbols | Xn - Harmful |
Risk Codes | R65 - Harmful: May cause lung damage if swallowed R66 - Repeated exposure may cause skin dryness or cracking |
Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. |
WGK Germany | 3 |
TSCA | Yes |
HS Code | 29012990 |
Toxicity | LD50 orally in Rabbit: > 10000 mg/kg LD50 dermal Rabbit > 10000 mg/kg |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Introduction | 1-octaene is a long-chain olefin with many isomers, these isomers differ in the position of the double bond. 1-dectene is one of the many isomers, belonging to the alpha-olefin, which is a relatively inexpensive solvent, which is compatible with oleic acid. 1-dectene can be used in the synthesis of colloidal quantum dots, but in the process it can be replaced by A heat transfer fluid, such as Dow therm A or Thermo inol 66. |
Use | octaene is used to prepare alkene-terminated alkyl Silicon monolayers, nanocrystals, nanosheets and quantum dots. This product is a gas chromatographic comparison sample used in organic synthesis for the production of surfactants, fragrances, barks, dyes and polymers. |
production method | is obtained by dehydration of decanol. After mixing decanol and acetic anhydride (molar ratio of 1:1.5), a quartz tube containing quartz sand was added dropwise from a constant pressure funnel at a temperature of 610±10 ° C, the residence time in the column was 2min. The pyrolysis product is nearly equal volume of two layers of liquid, and the lower layer is mainly acetic acid and acetic anhydride, which are discarded. The upper layer of liquid and 1N potassium hydroxide ethanol solution are refluxed at 100 ℃ for 1H, and then poured into excess warm water, the water-insoluble substance is dissolved in n-hexane, cooled at 0 ℃, the unreacted decanol precipitates, filtered and separated, the filtrate is distilled under reduced pressure, and n-hexane is distilled out at room temperature, the pre-distillate was distilled off at elevated temperature, and then the 195 ° C. (4.39kPa) fraction was collected as octaene. |
autoignition temperature | 482 ° F. |