テトラフルオロエテン
ペルフルオロエチレン · テトラフルオロエチレン · 1,1,2,2-テトラフルオロエテン · テトラフルオロエテン · 四フッ化エチレン · テトラフルオルエテン · :PFC-114 · C2F4
識別子と物理属性
| CAS No. | 116-14-3 |
|---|---|
| 分子式 | C2F4 |
| 平均分子量 | 100.01 g/mol |
| 単同位体質量 | 99.99361265 g/mol |
| SMILES | FC(F)=C(F)F |
| InChIKey | BFKJFAAPBSQJPD-UHFFFAOYSA-N |
| PubChem CID | 8301 |
| ChEMBL | CHEMBL541730 |
| ChEBI | CHEBI:38866 |
| EC No. | 204-126-9 |
| DTXSID | DTXSID6021325 |
| 現地名 | テトラフルオロエテン |
化学・物理的性質
| XLogP | 1.3 |
|---|---|
| 極性表面積 | 0 |
| 水素結合供与体数 | 0 |
| 水素結合受容体数 | 4 |
| 回転可能結合数 | 0 |
| 重原子数 | 6 |
| 形式電荷 | 0 |
| 複雑度 | 55 |
| 融点 | -142°C |
| 沸点 | -76.3°C |
| 密度 | 1.1507 |
| 屈折率 | 1.2420 (estimate) |
| 溶解度 | 110mg/L at 28℃ |
| 比熱容量 | Cp(gas): 0.8 J/(g·K), at 25℃ |
| ヘンリー定数 | 1.6×10-5 mol/(m3Pa) at 25℃, Wilhelm et al. (1977) |
| 誘電率 | 1.9(Ambient) |
| 安定性 | 安定。加熱すると反応します。 |
| LogP（分配係数） | 1.21 at 20℃ |
| CAS データベース | 116-14-3(CAS DataBase Reference) |
| NISTの化学物質情報 | Ethene, tetrafluoro-(116-14-3) |
| EPAの化学物質情報 | Tetrafluoroethene (116-14-3) |
| ECETOC JACC REPORT | Tetrafluoroethylene (116-14-3) |
化学的特性
Tetrafluoroethylene is a colorless, flammable gas. Heavier than air. insoluble in water. soluble in acetone.
安全性と法規制
| TSCA 収載状態 | TSCA listed |
|---|---|
| 輸送番号（UN） | UN 1081 (TETRAFLUOROETHYLENE, STABILIZED) |
| 毒性 | LC50 (4 hr) in rats, mice, hamsters, guinea pigs (ppm): 37500-45000, 35000, 28500, 28000 (Kennedy) |
| 危険文句（R） | 11 |
| 化審法 | 2-112 |
| 危険表示 | C,F |
| hazard_note | Corrosive/Flammable |
| 安全措置（S） | 16-36/37/39-45 |
| 危険等級 | 2.1 |
| 環境リスク評価 | テトラフルオロエチレン(116-14-3) |
| 有害物質データ | 116-14-3(Hazardous Substances Data) |
用途
用途
フッ素樹脂、含フッ素化合物の原料
説明
Tetrafluoroethylene is a synthetic, colorless, flammable gas that is insoluble in water. Tetrafluoroethylene is used primarily in the synthesis of polytetrafluoroethylene resins. It is also used as a monomer in the synthesis of copolymers and as a propellant for food product aerosols. When heated to decomposition, tetrafluoroethylene emits highly toxic fluorocarbon fumes. The primary route of human exposure to this compound is inhalation. Acute inhalation exposure to tetrafluoroethylene may result in irritation of the respiratory tract and buildup of fluid in the lungs (pulmonary edema). Contact with this gas can cause eye irritation. This chemical is reasonably anticipated to be a human carcinogen. (NCI05)
使用
In manufacture of polymers and synthesis of fluorinated refrigerants, dielectric media and solvents. In vinyl polymerization, cycloalkylation and addition reactions.
一般的な説明
Tetrafluoroethylene, stabilized appears as a colorless odorless gas. Easily ignited. Vapors are heavier than air. May asphyxiate by the displacement of air. May violently polymerize under prolonged exposure to fire or heat, violently rupturing the container. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. Water insoluble.
製法・合成法
製造方法
Tetrafluoroethylene (TFE) is manufactured from chloroform. Chloroform is fluorinated by reaction with hydrogen fluoride to produce chlorodifluoromethane (R-22). Pyrolysis of chlorodifluoromethane then yields TFE.CHCl3 + 2 HF → CHClF2 + 2 HCl2CHClF2 → C2F4 + 2 HClA laboratory synthesis entails pyrolysis of a PTFE under a vacuum. The PTFE polymer "cracks" and depending on the pressure, produces mainly C2F4.