테트라플루오르에틸렌
테트라플루오르에틸렌 · 과불화에텐 · C2F4 · Perfluoroethene · R1114 · MS-122 · PFC-1114 · fluoroplast4
식별자 및 물리적 특성
| CAS No. | 116-14-3 |
|---|---|
| 분자식 | C2F4 |
| 평균 분자량 | 100.01 g/mol |
| 단동위원소 질량 | 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 |
| 현지명 | 테트라플루오르에틸렌 |
화학 및 물리적 성질
| XLogP | 1.3 |
|---|---|
| 극성 표면적 | 0 |
| 수소 결합 공여자 수 | 0 |
| 수소 결합 수용자 수 | 4 |
| 회전 가능 결합 수 | 0 |
| 무거운 원자 수 | 6 |
| 형식 전하 | 0 |
| 복잡도 | 55 |
| 녹는점 | -142°C |
| 끓는 점 | -76.3°C |
| 밀도 | 1.1507 |
| 굴절률 | 1.2420 (estimate) |
| 용해도 | 110mg/L at 28℃ |
| 비열 | Cp(gas): 0.8 J/(g·K), at 25℃ |
| 헨리 상수 | 1.6×10-5 mol/(m3Pa) at 25℃, Wilhelm et al. (1977) |
| 유전율 | 1.9(Ambient) |
| 안정성 | 안정적인. 가열되면 반응합니다. |
| LogP(분배 계수) | 1.21 at 20℃ |
| NIST | Ethene, tetrafluoro-(116-14-3) |
| EPA | Tetrafluoroethene (116-14-3) |
| ECETOC JACC REPORT | Tetrafluoroethylene (116-14-3) |
화학적 성질
Tetrafluoroethylene is a colorless, flammable gas. Heavier than air. insoluble in water. soluble in acetone.
안전 및 규제
| TSCA 등재 상태 | TSCA listed |
|---|---|
| 운송 번호(UN) | UN 1081 (TETRAFLUOROETHYLENE, STABILIZED) |
| 독성 | LC50 (4 hr) in rats, mice, hamsters, guinea pigs (ppm): 37500-45000, 35000, 28500, 28000 (Kennedy) |
| 위험 문구(R) | 11 |
| 위험 표시 | C,F |
| 안전 문구(S) | 16-36/37/39-45 |
| 위험 등급 | 2.1 |
| 기존화학 물질 | KE-33427 |
| 위험 참고 사항 | Corrosive/Flammable |
| 유해 물질 데이터 | 116-14-3(Hazardous Substances Data) |
| 중점관리물질 필터링 | 별표1-68 |
| 사고대비 물질 필터링 | 72 |
| 암, 돌연변이성물질 필터링 | 342 |
용도
개요
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)
용도
In manufacture of polymers and synthesis of fluorinated refrigerants, dielectric media and solvents. In vinyl polymerization, cycloalkylation and addition reactions.
일반 설명
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.
제조 및 합성 방법
제조 방법
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.