비닐 플루오르화물

비닐 플루오르화물 속성

비닐 플루오르화물 C화학적 특성, 용도, 생산

개요

Vinyl fluoride (VF) was first synthesized by Frederic Swarts, a Belgian chemist in 1901, by the reaction between zinc and 1,1-difluoro-2-bromoethane. Modern preparation involves the reaction of acetylene and hydrogen fluoride (HF) in the presence of a mercury- or aluminum-based catalyst. The US Environmental Protection Agency (EPA) listed VF as a highproduction- volume chemical in 1990. According to National Toxicology Program (NTP), 2005, the annual production of VF in the United States was above 1 million pounds (454 000 kg) in 1990 and approximately 3.3 million pounds (1.5 million kg) in 2001.

화학적 성질

Vinyl fluoride is a colorless gas.

용도

Vinyl fluoride is used primarily in the production of polyvinyl fluoride and other fluoropolymers. Polymers of vinyl fluoride are resistant to weather and exhibit great strength, chemical inertness, and low permeability to air and water. Polyvinyl fluoride is laminated with aluminum, galvanized steel, and cellulose materials and is used as a protective surface for the exteriors of residential and commercial buildings. Polyvinyl fluoride laminated with various plastics has been used to cover walls, pipes, and electrical equipment and inside aircraft cabins (IARC 1995).

생산 방법

The first preparation of VF in the early 1900s was by reacting zinc with 1,1-difluoro-2-bromomethane.
VF was considered to be a high production volume chemical according to the U.S. Environmental Protection Agency with annual production exceeding 1million lb in 1990. In 2001, annual U.S. production was estimated approximately 3.3 million lb. In 1994, VF was produced by one company each in Japan and the United States. More recently, only one U.S. manufacturer of VF was identified . Information on European manufacturer is not available.
The modern production is by the addition of hydrogen fluoride to acetylene over a mercury- or aluminum-based catalyst.

제조 방법

Vinyl fluoride may be obtained from acetylene by either of the two following routes:

In the first method, acetylene is heated with hydrogen fluoride in the presence of a catalyst of mercuric chloride on charcoal at about 40C to yield vinyl fluoride directly. In the second method, acetylene is treated with an excess of hydrogen fluoride to form difluoroethane which is then pyrolysed at about 700C in a platinum tube to give vinyl fluoride, which is separated by distillation under pressure.
Vinylidene fluoride is obtained from vinylidene chloride by the following route:

In the first stage, vinylidene chloride undergoes addition with hydrogen chloride at about 30C and atmospheric pressure in the presence of a FriedelCrafts type catalyst. The resulting trichloroethane is then treated with hydrogen fluoride at about 180C and 3 MPa (30 atmospheres) in the presence of antimony pentachloride to give chlorodifluoroethane. Pyrolysis of this product yields vinylidene fluoride. Vinylidene fluoride is a gas, b.p. -84C.

일반 설명

A colorless gas with a faint ethereal odor. Shipped as a confined liquid under its vapor pressure. Any leak can either be liquid or vapor. Contact with the liquid can cause frostbite. Easily ignited. Vapors are heavier than air. Can asphyxiate by the displacement of air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket.

공기와 물의 반응

Highly flammable, reacts with air to form peroxides

반응 프로필

VINYL FLUORIDE is light sensitive, peroxidizable monomer may initiate exothermic polymerization of the bulk material [Handling Chemicals Safely 1980. p. 958]. Sensitive to many oxidants.

건강위험

Inhalation of vapor causes slight intoxication, some shortness of breath. Liquid may cause frostbite of eyes or skin.

Safety Profile

Confirmed carcinogen. A poison. Mutation data reported. A very dangerous fire hazard. To fight fire, stop flow of gas. When heated to decomposition it emits toxic fumes of F-. See also FLUORIDES.

잠재적 노출

Vinyl fluoride’s primary use is as a chemical and polymer intermediate; used to make polyvinyl fluoride (Tedlar) film. Polyvinyl fluoride film is characterized by superior resistance to weather, high strength; and a high dielectric constant. It is used as a film laminate for building materials and in packaging electrical equipment. Polyvinyl fluoride film poses a hazard, so it is not recommended for food packaging. Polyvinyl fluoride evolves toxic fumes upon heating.

Carcinogenicity

Vinyl fluoride is reasonably anticipated to be a human carcinogenbased on sufficient evidence of carcinogenicity from studies in experimental animals.

환경귀착

VF is expected to exist solely as a gas in the ambient atmosphere. The gas-phase of VF is degraded in the atmosphere by reaction with photochemically produced hydroxyl radicals. The half-life for this reaction in air is estimated to be 3 days as calculated from its rate constant of 5.56 × 10^-12 cm3 molecule sec-^-1 at 25°C. VF also reacts with atmospheric ozone, leading to its atmospheric degradation (estimated half-life of about 16 days). The Henry’s Law constant of VF (0.118 atmm3 mol1) indicates that VF is expected to volatilize rapidly from water surfaces. Due to its volatile property, VF is not persistent in nature and adsorption to sediment is not considered to be a natural process for VF in water. The half-life for volatilization from a model river (1-m deep) and a model pond (2-m deep) are 2 and 23.5 h, respectively. VF is not expected to bioconcentrate in aquatic organisms as it has a bioconcentration factor (BCF) of 4.7, whereas a BCF value greater than 1000 is required for its significant bioaccumulation. As VF remains as a gas under normal conditions, it readily evaporates to the atmosphere when released into soil. When dissolved in an aqueous solution, VF is very mobile in soil. Lack of sufficient data prevents to predict its biodegradation fate in soils.

운송 방법

UN1860 Vinyl fluoride, inhibited, Hazard Class: 2.1; Labels: 2.1-Flammable gas.

비 호환성

May polymerize. Inhibited with 0.2% terpenes to prevent polymerization. Violent reaction with oxidizers. May accumulate static electrical charges.

비닐 플루오르화물 준비 용품 및 원자재

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비닐 플루오르화물 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +8618949823763	sales@tnjchem.com	China	34563	58
Shaanxi Didu New Materials Co. Ltd	+8617792793228	1069@dideu.com	China	8579	58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.	+8618950047208	ellena@amitychem.com	China	43414	58
Mainchem Co., Ltd.	+86-0592-6210733	sale@mainchem.com	China	32343	55
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006356688 18621169109	market03@meryer.com	China	40228	62
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696	info@hanhongsci.com	China	42934	64
Shanghai Meishui Chemical Technology Co., Ltd	021-60549325 18616193163		China	4526	56
Chengdu HuaXia Chemical Reagent Co. Ltd	400-1166-196 13458535857	cdhxsj@163.com	China	13350	58
Central China Special Gas (CCSG) Co., Ltd	0734-8755555 15674722888	lyq@ccsg.cn	China	401	58
Shaanxi DIDU pharmaceutical and Chemical Co., Ltd	029-029-81120477 17792793610	1033@dideu.com	China	10000	58

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