Methanol, properties corrosion

Solid base catalysts have gradually gained importance in the catalytic field due to their well-known advantages of non-corrosive and easier product separation[l]. However, in contrast to the extensive application of solid acid catalysts, the utilization of solid bases was limited for their rapid catalytic deactivation [2]. The deactivation problem was also foimd in the continuous synthesis of dimethyl carbonate (DMC). DMC has attracted more and more attention in recent years because of its low toxic and nicely biodegradable property [3,4]. Transesterification between methanol and propylene carbonate (PC) or ethylene carbonate (EC) is an attractive route for the synthesis of DMC. Both acid and base catalysts catalyze the reaction, and base catalyst was reported to be more effective [5]. Among bases, CaO showed unique catalytic activity for the transesterification reaction with high yield and selectivity [6]. Unfortunately, when CaO based catalyst was employed in the continuous synthesis of DMC, its activity gradually decayed with time-on-stream due to... 

Formic acid (CAS 64-18-6) Acid is corrosive severe bums may result from contact of eyes and skin with concentrated acid. Vapors highly Irritating to eyes and respiratory tract. Ingestion may produce severe metabolic acidosis (see methanol, p 260). 5 ppm 30 ppm 3 2 0 Coloriess liquid. Pungent odor and Irritation occur near the TLV and are adequate warning properties. Vapor pressure is 30 mm Hg at 20°C (68°F). Combustible. 

Chem. Descrip. Anthranilic acid CAS 118-92-3 EINECS/ELINCS 204-287-5 Uses Antioxidant for fats, greases, lube oils, and polyamides sludge preventative in furnace and lube oils chelating agent and sequestrant corrosion inhibitor stabilizer for can lacquers, oils, and lubricants Properties Cream, cryst. or powd. m.p. 147 C min. 0.5 g dissolves In 100 ml water, 28 g dissolves in 100 ml methanol 99% min. purity AAUSP [CasChem]... 

Properties Wh. solid beads or pellets absorbs water and CO2 from air sol. in water, alcohol, methanol, glycerin m.w. 40.00 dens. 2.12 (20/4 C) vapor pressure 1 mm (739 C) m.p. 318 C b.p. 1390 C Toxicolo ACGIH TLV/CL 2 mg/m of air LD50 (IP, mouse) 40 mg/kg LDLo (oral, rabbit) 500 mg/kg poison by IP route mod. toxic by ing. corrosive irritant to eyes, skin, mucous membrane mists and dusts cause small bums inh. can damage upper respiratory tract and lungs mutagenic data TSCA listed... 

Properties Yel. clear vise, liq. sol. (g/l) > 450 g in acetone, chloroform, methanol, 77 g in hexane insol. in water dec. gradually 150-300 C more stable in acidic sol n. m.w. 419.93 dens. 1.17 b.p. 300 C (37 mm) ref. index 1.5533 (20 C) Toxicology LD50 (oral, rat) 451 mg/kg, (skin, rabbit) 2500 mg/kg LDLo (IV, rat) 50 mg/kg poison by ing., IV routes mod. toxic by skin contact skin irritant corrosive, causes eye damage experimental reproductive effects tumorigen mutagen TSCA listed Environmental Highly toxic to fish and bees Hazardous Decomp. Prods. Heated to decomp., emits toxic fumes of Cr, NOx, and CN ... 

Owing to highly corrosive acid conditions, stable catalysts and supports are required for the development of anodes working in direct methanol-air fuel cells. Platinum is the only stable catalyst material that shows a significant amount of activity for methanol oxidation. However, platinum has to be modified with other metals, such as ruthenium and tin, to obtain lower oxidation potentials. So, platinum and tin or ruthenium particles have been electrochemically immobilized in poly(3-methylthiophene) [142] and polyaniline [137] films, respectively. Compared to electrodes modified with platinum alone, the electrocatalytic properties... 

Synonyms include Furyl Carbinol, 2-Hydroxy Methyl Furan, 2-Furan Methanol, Furfuryl alcohol resin. Furan resin, FA resin, Poly(furfuryl alcohol). Prepolymers of FA. It is a raw material for organic synthesis, producing levulic acid, resin of various furane kinds in different properties, furfuryl alcohol urea formal resin and phenolic resin. It is a fine solvent for furane resin and oil varnish and pigment as well as used in rocket fuel. It is also used in the production of synthetic fibers, rubber, agricultural chemicals and foundry products. Furfuryl alcohol resins are derivatives of agricultural waste products and complex polymers that are formed in a condensation reaction that occurs when the furfuryl alcohol is acidified. The resins have low viscosity with an odor of furfuryl alcohol. The resin systems are highly reactive and can be catalyzed using a variety of active and latent acidic catalysts. When thermoset, the resins produce polymers that are heat resistant and extremely corrosion resistant to acids, bases and solvents. 

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