ブロモシクロペンタン
ブロモシクロペンタン · シクロペンチルブロミド · 1-ブロモシクロペンタン · シクロペンチル ブロマイド(CPB) · シクロペンチルブロマイド 臭化物 · 臭化シクロペンチル · シクロペンチルブロマイド · シクロペンチル=ブロミド
識別子と物理属性
| CAS No. | 137-43-9 |
|---|---|
| 分子式 | C5H9Br |
| 平均分子量 | 149.03 g/mol |
| 単同位体質量 | 147.98876239 g/mol |
| SMILES | BrC1CCCC1 |
| InChIKey | BRTFVKHPEHKBQF-UHFFFAOYSA-N |
| PubChem CID | 8728 |
| EC No. | 205-294-6 |
| DTXSID | DTXSID9059670 |
| 現地名 | ブロモシクロペンタン |
化学・物理的性質
| XLogP | 2.3 |
|---|---|
| 極性表面積 | 0 |
| 水素結合供与体数 | 0 |
| 水素結合受容体数 | 0 |
| 回転可能結合数 | 0 |
| 重原子数 | 6 |
| 形式電荷 | 0 |
| 複雑度 | 37.2 |
| SpringerMaterials Properties | Schoenflies notation |
| 沸点 | 137-139 °C (lit.) |
| 密度 | 1.39 g/mL at 25 °C (lit.) |
| 屈折率 | n20/D 1.4881(lit.) |
| 引火点 | 95 °F |
| 貯蔵条件 | Store at R.T. |
| 溶解度 | Chloroform, Ethyl Acetate (Slightly)水と混和しない。 |
| 外観・状態 | 液体 |
| 比重 | 1.39 |
| 色 | クリアイエロー～ライトブラウン |
| BRN | 1209256 |
| 安定性 | 安定。可燃性。強酸化剤、強塩基とは相容れない。 |
| InChI | 1S/C5H9Br/c6-5-3-1-2-4-5/h5H,1-4H2 |
| InChIKey | BRTFVKHPEHKBQF-UHFFFAOYSA-N |
| SMILES | BrC1CCCC1 |
| LogP（分配係数） | 2.745 (est) |
| CAS データベース | 137-43-9(CAS DataBase Reference) |
| NISTの化学物質情報 | Cyclopentane, bromo-(137-43-9) |
| EPAの化学物質情報 | Cyclopentane, bromo- (137-43-9) |
化学的特性
Bromocyclopentane is a colorless to light yellow liquid at standard temperature and pressure.It has an aroma similar to camphor. It turns brown after a long time. Soluble in ethanol, ether, insoluble in water. Halocyclopentanes can be prepared by reacting the corresponding alcohols with thionyl halides, phosphorus trihalides or hydrohalic acids.
安全性と法規制
| GHS 分類 | WarningH226 (98.8%): Flammable liquid and vapor [Warning Flammable liquids]P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 82 reports by companies from 5 notifications to the ECHA C&L Inventory. |
|---|---|
| 規制情報 | Chemical: Cyclopentane, bromo-Status: Active Update: 12-02-2019 https://echa.europa.eu/registration-dossier/-/registered-dossier/15852Bromocyclopentane: Does not have an individual approval but may be used under an appropriate group standard |
| Hazard Classes and Categories | Flam. Liq. 3 (98.8%) |
| F | 8 |
| 水環境危害等級（WGK） | 3 |
| TSCA 収載状態 | TSCA listed |
| 輸送番号（UN） | UN 1993 3/PG 3 |
| 税関コード | 29035990 |
| 危険文句（R） | 10 |
| 化審法 | (3)-4322 |
| 消防法 | 危-4-2-III |
| 安全措置（S） | 23-24/25-16 |
| 危険等級 | 3Flam. Liq. 3 |
| 包装等級 | III |
| 貯蔵分類 | 3 - Flammable liquids |
用途
用途
有機合成原料。
使用
Bromocyclopentane is a precursor used in the preparation of cyclopentene and cyclopentanol. It is a fatty bromide, which is used as a solvent. It is used as an intermediate for the preparation of surfactant and pharmaceuticals and other organic compounds. It is also used in the production of the medicine cyclopentathiazide.
製法・合成法
製造方法
Bromocyclopentane is synthesized by bromination of cyclopentanol: cyclopentanol is mixed with hydrobromic acid and heated to about 170°C refluxed for 6-8h. Then distilled with water steam, the oil layer is washed with 5% sodium carbonate, then dried, filtered, fractionated and collected 136-139°C fraction is the finished product. Another method is by the reaction of cyclopentanol and phosphorus tribromide: the cyclopentanol is cooled to 0 ℃, add the newly evaporated phosphorus tribromide drop by drop, add it all at 0-5 ℃, stir for 2h, and leave it at room temperature overnight. Add water and stratify, take the oil layer water distillation. Distillate stratification, the oil layer was washed with 10% sodium bicarbonate solution, dried with anhydrous calcium chloride, filtration, filtrate distillation, collect 134-141 ℃ fraction that is bromocyclopentane.