N-ENEICOSANE
n-Heneicosane
CAS: 629-94-7
Molecular Formula: C21H44
N-ENEICOSANE - Names and Identifiers
| Name | n-Heneicosane |
| Synonyms | henicosane HENICOSANE HENEICOSANE N-ENEICOSANE n-Henicosane n-Heneicosane N-HENEICOSANE HENEICOSANE, STANDARD FOR GC n-Heneicosane [Standard Material] |
| CAS | 629-94-7 |
| EINECS | 211-118-9 |
| InChI | InChI=1/C21H44/c1-3-5-7-9-11-13-15-17-19-21-20-18-16-14-12-10-8-6-4-2/h3-21H2,1-2H3 |
N-ENEICOSANE - Physico-chemical Properties
| Molecular Formula | C21H44 |
| Molar Mass | 296.57 |
| Density | 0,792 g/cm3 |
| Melting Point | 39-41°C(lit.) |
| Boling Point | 100°C2mm Hg(lit.) |
| Flash Point | >230°F |
| Solubility | Chloroform, Hexane |
| Vapor Presure | <1 mm Hg ( 20 °C) |
| Vapor Density | 10.3 (vs air) |
| Appearance | Crystalline Chunks, Crystals, or Flakes |
| Color | White |
| BRN | 1748500 |
| Storage Condition | Refrigerator |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.4352 (589.3 nm 45℃ |
N-ENEICOSANE - Risk and Safety
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | 211-118-9 |
| TSCA | Yes |
| HS Code | 29011000 |
N-ENEICOSANE - Reference
| Reference Show more | 1. Wen Zhi Rui Zhang Liang Wang Jiao et al. Determination of 14 active ingredients in rose essential oil by one test and multiple evaluation method [J]. Guizhou Science 2019(4):34-39. |
N-ENEICOSANE - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | n-dioxane is an n-alkane, white crystal, insoluble in water. As one of the key components of diesel oil, low temperature improvement and environmental protection liquid fuel composition, n-alkane has been widely used, atmospheric particulate matter and organic matter analysis also play an extremely important role. |
| preparation | a method for preparing N-dioxane at one time, comprising the steps of:(1). Bromo n-pentane 1510.5g(10mol) and Bromo N-decane 3053.5g(10mol) are mixed uniformly to form a bromo-alkane mixture, which is ready for use;(2). Weigh 483g(21mol) of metallic sodium and cut it into small thin strips with an area of approximately 1 × 3 cm2 for use;(3). Put 50g of bromoalkane mixture and 20g of sodium metal in the reaction kettle, stir and raise the temperature to 80 ℃, rely on the reaction heating, maintain the reaction temperature at 120 ℃, and continuously add the remaining bromoalkane mixture dropwise, and add metal sodium, maintain micro reflux, feeding is completed, control the temperature at 140 ℃, Constant temperature for 2 hours;(4). Add 400g of 95% ethanol and 260 ml of water successively, separate the organic matter, wash with water until neutral, dry with anhydrous magnesium sulfate, and collect the fraction of 280 ~ ℃ by distillation, the fraction was washed with 600g concentrated potassium sulfate until the acid layer was pale yellow. The organic phase was washed with water until neutral and dried. 500g of 96% N-decane and 98% G of N-dioxane were collected through a fractionation column, the content of N-alkane was 96% ~ 98%. The molar ratio of the n-pentane to The Bromo N-Decane is 1: 1, the reaction vessel is composed of a stirrer, a separating funnel and a reflux condenser, and the strong oxidant is concentrated sulfuric acid or acidic potassium permanganate. |
| biological activity | Heneicosane is an aroma component isolated from Streptomyces philanthi RL-1-178 or Serapias cordigera. Heneicosane is a pheromone that inhibits the production of aflatoxins. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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