正二十烷（CAS 629-94-7）：分子式 C21H44、分子量 296.6。
| CAS号 | 629-94-7 |
|---|---|
| 分子式 | C21H44 |
| 分子量 | 296.6 |
| 熔点 | 104.9 °F (NTP, 1992) |
| 沸点 | 673.7 °F at 760 mmHg (NTP, 1992) |
| LogP | 11 |
| 应用领域 | Uses: They are used mainly in applications for which isoalkanes are not acceptable for biological reasons、e.g.、the production of detergents or proteins.、Higher n-Alkanes、Solid n-alkanes (paraffin waxes) are used in a variety of applications、... oxidation、and chlorination reactions.、Aedes aegypti mosquito is one of the most notorious vectors of dangerous diseases like dengue hemorrhagic fever and chikangunya. One method of control of the vectors is by the use of semiochemicals or pheromones. The pheromone n-heneicosane (C21) has been proved to be effective in attracting the female Aedes aegypti to lay eggs in the treated water and the growth of the larva is controlled by insect growth regulator diflubenzuron (DB).、Use Classification: Fragrance Ingredients、Methods of Manufacturing: The liquefaction of coal provides the greatest variety of saturated hydrocarbons. The Fischer-Tropsch synthesis produces alkanes from syngas (CO + H2) in the range C1 to C30 or higher depending on the process variant: depending on the catalyst employed、the synthesis yields predominantly liquid hydrocarbons in the gasoline range、along with gases from C1 to C4 when iron-based catalysts are used、while cobalt-based catalysts produce longer chain hydrocarbons in the diesel and wax range that often undergo、depending of the desired product slate、further processing、especially for gasoline generation. While iron-based Fischer-Tropsch catalysts generate complex mixtures that also include branched and olefinic hydrocarbons、cobalt-based catalysts produce streams that are rich in n-alkanes and are therefore suitable raw materials for detergents and for wax products.、Saturated Hydrocarbons、Suitable sources for n-alkanes with more than six carbon atoms are the appropriate petroleum distillate fractions、from which the n-paraffins can be isolated in high isomeric purity (= 95% linearity) by selective separation techniques、especially fractional distillation.、General Manufacturing Information: Heneicosane: ACTIVE、Gas-phase dehydrogenation of n-alkanes over noble-metal catalysts yield the corresponding n-alkenes at low conversion rates (ca. 10%) with predominantly internal double bonds. The corresponding alkenes can be isolated in high purity by selective molecular-sieve processes. |
登记用途：Uses: They are used mainly in applications for which isoalkanes are not acceptable for biological reasons、e.g.、the production of detergents or proteins.、Higher n-Alkanes、Solid n-alkanes (paraffin waxes) are used in a variety of applications、... oxidation、and chlorination reactions.、Aedes aegypti mosquito is one of the most notorious vectors of dangerous diseases like dengue hemorrhagic fever and chikangunya. One method of control of the vectors is by the use of semiochemicals or pheromones. The pheromone n-heneicosane (C21) has been proved to be effective in attracting the female Aedes aegypti to lay eggs in the treated water and the growth of the larva is controlled by insect growth regulator diflubenzuron (DB).、Use Classification: Fragrance Ingredients、Methods of Manufacturing: The liquefaction of coal provides the greatest variety of saturated hydrocarbons. The Fischer-Tropsch synthesis produces alkanes from syngas (CO + H2) in the range C1 to C30 or higher depending on the process variant: depending on the catalyst employed、the synthesis yields predominantly liquid hydrocarbons in the gasoline range、along with gases from C1 to C4 when iron-based catalysts are used、while cobalt-based catalysts produce longer chain hydrocarbons in the diesel and wax range that often undergo、depending of the desired product slate、further processing、especially for gasoline generation. While iron-based Fischer-Tropsch catalysts generate complex mixtures that also include branched and olefinic hydrocarbons、cobalt-based catalysts produce streams that are rich in n-alkanes and are therefore suitable raw materials for detergents and for wax products.、Saturated Hydrocarbons、Suitable sources for n-alkanes with more than six carbon atoms are the appropriate petroleum distillate fractions、from which the n-paraffins can be isolated in high isomeric purity (= 95% linearity) by selective separation techniques、especially fractional distillation.、General Manufacturing Information: Heneicosane: ACTIVE、Gas-phase dehydrogenation of n-alkanes over noble-metal catalysts yield the corresponding n-alkenes at low conversion rates (ca. 10%) with predominantly internal double bonds. The corresponding alkenes can be isolated in high purity by selective molecular-sieve processes.。
正二十烷 是一种化工化合物，登记 CAS 号为 629-94-7，分子式 C21H44（分子量 296.6）。
登记 CAS 号：629-94-7
其分子式 C21H44 由 21 个碳、44 个氢 组成。
别名/同义词：正二十烷 · n-Heneicosane
正二十烷 的 CAS 登记号为 629-94-7。
分子式 C21H44，分子量 296.6。
别名/同义词：正二十烷、n-Heneicosane。
登记用途：Uses: They are used mainly in applications for which isoalkanes are not acceptable for biological reasons、e.g.、the production of detergents or proteins.、Higher n-Alkanes、Solid n-alkanes (paraffin waxes) are used in a variety of applications、... oxidation、and chlorination reactions.、Aedes aegypti mosquito is one of the most notorious vectors of dangerous diseases like dengue hemorrhagic fever and chikangunya. One method of control of the vectors is by the use of semiochemicals or pheromones. The pheromone n-heneicosane (C21) has been proved to be effective in attracting the female Aedes aegypti to lay eggs in the treated water and the growth of the larva is controlled by insect growth regulator diflubenzuron (DB).、Use Classification: Fragrance Ingredients、Methods of Manufacturing: The liquefaction of coal provides the greatest variety of saturated hydrocarbons. The Fischer-Tropsch synthesis produces alkanes from syngas (CO + H2) in the range C1 to C30 or higher depending on the process variant: depending on the catalyst employed、the synthesis yields predominantly liquid hydrocarbons in the gasoline range、along with gases from C1 to C4 when iron-based catalysts are used、while cobalt-based catalysts produce longer chain hydrocarbons in the diesel and wax range that often undergo、depending of the desired product slate、further processing、especially for gasoline generation. While iron-based Fischer-Tropsch catalysts generate complex mixtures that also include branched and olefinic hydrocarbons、cobalt-based catalysts produce streams that are rich in n-alkanes and are therefore suitable raw materials for detergents and for wax products.、Saturated Hydrocarbons、Suitable sources for n-alkanes with more than six carbon atoms are the appropriate petroleum distillate fractions、from which the n-paraffins can be isolated in high isomeric purity (= 95% linearity) by selective separation techniques、especially fractional distillation.、General Manufacturing Information: Heneicosane: ACTIVE、Gas-phase dehydrogenation of n-alkanes over noble-metal catalysts yield the corresponding n-alkenes at low conversion rates (ca. 10%) with predominantly internal double bonds. The corresponding alkenes can be isolated in high purity by selective molecular-sieve processes.。
正二十烷（CAS 629-94-7）的独立参考数据，整理自公开化学数据库。
| CAS Registry Number | 629-94-7 |
|---|---|
| PubChem CID | 12403 |
| Molecular formula | C21H44 |
| IUPAC name | henicosane |
| UNII (FDA) | I93S5U5DMP |
| Molecular Weight | 296.6 |
|---|---|
| XLogP3 | 11 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 18 |
| Exact Mass | 296.344301404 |
| Monoisotopic Mass | 296.344301404 |
| Topological Polar Surface Area | 0 |
| Heavy Atom Count | 21 |
| Boiling Point | 673.7 °F at 760 mmHg (NTP, 1992) |
|---|---|
| Boiling Point | 359 °C |
| Melting Point | 104.9 °F (NTP, 1992) |
| Melting Point | 40.4 °C |
| Flash Point | 113 °C (235 °F) - closed cup |
| Density | 0.7919 g/cu cm at 20 °C |
HENEICOSANE; n-Heneicosane; Henicosane; 629-94-7; I93S5U5DMP; DTXSID9047097; CHEBI:32931; RefChem:38740; DTXCID7027097; 211-118-9; MFCD00009346; UNII-I93S5U5DMP; Heneicosane, analytical standard; CH3-[CH2]19-CH3; HY-W089845; H0367
| GHS notification summary | 97.9% (94 / 96) |
|---|
| GHS notification summary | 97.9% (94 / 96) |
|---|
This chemical does not meet GHS hazard criteria for 97.9% (94 of 96) of all reports.
Reported as not meeting GHS hazard criteria by 94 of 96 companies (only 2.1% companies provided GHS information). For more detailed information, please visit ECHA C&L website.
n-Heneicosane · CAS 629-94-7 · C21H44. UNII I93S5U5DMP. Boiling Point: 673.7 °F at 760 mmHg (NTP, 1992); Boiling Point: 359 °C; Melting Point: 104.9 °F (NTP, 1992).
数据来源：PubChem / Wikidata；与随货 COA 不一致时以 COA 为准。
English page: n-Heneicosane