Dichlorofluoroethane R141b

A fluorine-dichloroethane (R141b) R141b is a high purity liquid, widely used in the field of cleaning and solvent. Because of its destruction of the ozone layer is CFC113 1/10, which was designated as an ideal fully halogenated CFC alternatives. According to "the Montreal Protocol": HCFC141b life in developed countries is until 2010, the US, Japan and other countries have been restricted in advance. In developing countries such as China can use the period to 2040, China has promised in advance to 2030. With methanol azeotrope 141b MA mainly for the electronics industry is developed. This feature is also useful for cleaning and degreasing all kinds of metal and plastic precision components, optical components. Its volatile characteristics designed to increase cleaning power for polar contaminants, improve HCFC141b solution. Physical and chemical properties Boiling point (℃) 32 Density (kg / m3) 1.249 heat of vaporization (kj / kg.k) 235 Viscosity (mPa.s) 25 ℃ 0.43 vapor pressure 0 ℃ (x 105Pa) 0.28 Steam pressure 20 ℃ (x 105Pa) 0.65 vapor pressure 50 ℃ (x 105Pa) 1.84 Solubization 20 ℃ (%) 0.27 0.032 surface tension of water-soluble 20 ℃ (%) 20 ℃ (mN / m) 18.7 KB value of 56 specific heat (cal / g. ℃) 0.28 ODP (ozone depletion factor) 0.11 GWP (global warming potential) exposure to 630 maximum volume content (ppm) 500 Flash point (℃) without dielectric constant (25 ℃) 7.9 Refractive coefficient (20 ℃) ??1.369 Use: aerospace technology, semiconductors packaging, electronics, optical components, precision metal, medical equipment, vehicle carriers, others such as SMT, LCD, audio heads, magnetic material, resin components and other applications. Features solvency: KB high value, selective solubility. Reliability: The high adaptability of various materials can be used for various purposes. Quick-drying: excellent drying and difficult spots, etc., maintaining good processing quality. Energy conservation: low boiling point, low heat of vaporization. Security: no flash point, is a non-flammable liquid. Device settings easier. Regeneration: the regeneration by distillation equipment within dramatically reduced the amount of industrial waste. Environmental protection: ODP is CFC113 of 10%, GWP of CFC113 12.6%. Permeability: low surface tension, and high liquidity. Security: no flash point, is a non-flammable liquid. The presence of combustion range concentration range shown to reach the next table in the dry air. 20J of energy needed to ignite under normal pressure. Follow safe operating regulations in the general health conditions, R141b can be safely used in the industrial field. According to the provisions of hazardous substances, R141b not belong to toxic substances. The maximum exposure is recommended volume content 500ppm (8 hours / day, 40 hours / week). This article from the daily Chemical http://www.Chem366.com