Octene, linear
1-Octene
CAS: 111-66-0
Molecular Formula: C8H16
Octene, linear - Names and Identifiers
| Name | 1-Octene |
| Synonyms | OCTEN-1 1-Octene Caprylene n-Octen-1 oct-1-ene N-OCTENE-1 1-N-OCTENE Octene, linear Caprylene~Octylene 1-OCTENE, STANDARD FOR GC |
| CAS | 111-66-0 |
| EINECS | 203-893-7 |
| InChI | InChI=1/C8H16/c1-3-5-7-8-6-4-2/h3H,1,4-8H2,2H3 |
Octene, linear - Physico-chemical Properties
| Molecular Formula | C8H16 |
| Molar Mass | 112.21 |
| Density | 0.715 g/mL at 25 °C (lit.) |
| Melting Point | -101 °C (lit.) |
| Boling Point | 122-123 °C (lit.) |
| Flash Point | 70°F |
| JECFA Number | 2191 |
| Water Solubility | Miscible with water, ether, alcohol and acetone. |
| Solubility | Soluble in acetone, benzene, and chloroform (Weast, 1986). Miscible with alcohol, ether(Windholz et al., 1983), and many aliphatic hydrocarbons. |
| Vapor Presure | 36 mm Hg ( 38 °C) |
| Vapor Density | 3.9 (vs air) |
| Appearance | Liquid |
| Specific Gravity | 0.714 |
| Color | Clear |
| Merck | 14,1764 |
| BRN | 1734497 |
| pKa | >14 (Schwarzenbach et al., 1993) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Highly flammable. Incompatible with strong oxidizing agents, acids. |
| Explosive Limit | 0.7-6.8%(V) |
| Refractive Index | n20/D 1.408(lit.) |
| Physical and Chemical Properties | Colorless liquid. Melting Point -102 °c, boiling point 122 °c, 61.5-61.7 °c (13.3kPa), relative density 0.7149(20/4 °c), refractive index 1.4087, flash point 21 °c. With alcohol, ether miscible, almost insoluble in water. |
| Use | Used as standard for chromatographic analysis |
Octene, linear - Risk and Safety
| Risk Codes | R11 - Highly Flammable R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R65 - Harmful: May cause lung damage if swallowed R10 - Flammable R66 - Repeated exposure may cause skin dryness or cracking R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R38 - Irritating to the skin |
| Safety Description | S16 - Keep away from sources of ignition. S60 - This material and its container must be disposed of as hazardous waste. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3295 3/PG 2 |
| WGK Germany | 1 |
| RTECS | RH2207000 |
| TSCA | Yes |
| HS Code | 29012990 |
| Hazard Class | 3 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 2000 mg/kg |
Octene, linear - Reference Information
| FEMA | 4293 | 1-OCTENE |
| olfactory Threshold | 0.001ppm |
| Henry's Law Constant | 0.952 at 25 °C (Hine and Mookerjee, 1975) |
| LogP | 4.47 at 20℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | 1-octene is an important linear olefin, commonly used as polyethylene comonomer and plasticizer, surfactants and raw materials for the synthesis of lubricating oils. Polyethylene produced from 1-octene as a comonomer has excellent properties and high added value. 1-octene copolymerization of linear low density polyethylene (LLDPE) melt strength, with good tensile properties, impact resistance and resistance to environmental stress cracking, can significantly improve the polyethylene machining performance, heat resistance, flexibility and transparency. 1-octene is also significantly superior to а-olefins in improving tear strength and fracture strength of LLDPE. In addition, 1-octene is also used to produce high and medium density polyethylene pipes, and 1-octene copolymerized polyethylene pipes have better toughness and better creep resistance. At present, China's polyethylene Copolymer products are mostly 1-butene copolymer. In recent years, Qilu, Tianjin, Maoming and other petrochemical companies have introduced 1-hexene Copolymer products, however, the copolymer of ethylene and 1-octene is almost blank (in recent years, Fushun Petrochemical Company has developed 1-octene copolymer product DP 900), resulting in slow development of high performance polyethylene in China. used in organic synthesis. used as standard for chromatographic analysis organic synthesis. Standard for gas chromatographic analysis. |
| production method | prepared by reacting bromopentane with metallic magnesium and then with bromopropene. The Grignard reagent was synthesized by using metal magnesium, anhydrous diethyl ether and methyl iodide, and then the mixture of bromopentane and anhydrous diethyl ether was added under boiling, and refluxed for 2H after adding. Then, a mixture of bromopropene in diethyl ether was gradually added. When the reaction was smooth, the mixture was refluxed for 1H and then decomposed by adding water. After the ether layer was separated, the ether was recovered, the residue was fractionated, and the fraction with a boiling point of 115-123 ° C. Was collected as the crude product. Metal sodium is added to the crude product for 2H, cooled and filtered, and then subjected to Efficient fractionation, and the fraction at the collection point of 121-122.5 ° C. Is the finished product. |
| category | flammable liquid |
| explosive hazard characteristics | mixing with air to form an explosive mixture; |
| flammability hazard characteristics | flammable; Spicy and irritating smoke emitted from fire scene |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Prevent fire; Separate storage and storage with oxidant |
| fire extinguishing agent | foam, dry powder, carbon dioxide |
| spontaneous combustion temperature | 446 ° F. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:54:55
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