Hydrogen cyanide price

The resulting melt is cooled lapidly to prevent reversion to calcium cyanamide. The product is marketed in the form of flakes, dark gray because of the presence of carbon. Typical composition is shown in Table 7. Because the rate of hydrogen cyanide evolution is relatively high, it is readily adaptable to fumigation. Specific gravity of the product is 1.8 to 1.9. The price of black cyanide is generally lower than sodium cyanide it is manufactured in Canada and South Africa. 

An example of the way in which process competition works in the manufacture of plastics is the story of acrylonitrile. The first process for the production of this plastic was based upon the reaction between hydrogen cyanide and acetylene, both hard to handle, poisonous, and explosive chemicals. The raw material costs were relatively low as compared to materials for other monomers, but the plant investment and manufacturing costs were too high. As a result, originally acrylonitrile monomer (1950s) sold for about 30 cents per pound and the future of the material looked dim as other plastics such as polyethylene became available at much lower prices due to their lower production costs. 

Hydrogen cyanide is an important building block chemical for the synthesis of a variety of industrially important chemicals, such as 2 hydroxy-4 methylthiobutyric acid, adiponitrile, nitrilotriacetic acid, lactic acid, and methyl methacrylate. The primary commercial routes to hydrogen cyanide are the reaction of methane and ammonia under aerobic (Andrussow Process) or anaerobic conditions (Degussa Process), or the separation of hydrogen cyanide as a by-product of the ammoxidation of propylene < ) The ammoxidation of methanol could represent an attractive alternate route to HCN for a number of reasons. First, on a molar basis, the price of methanol has become close to that of methane as world methanol capacity has increased. However, an accurate long term pricing picture for these two raw... 

Consider the following prices in /kg propylene (0.7), ammonia (0.2), acrylonitrile (1.8), hydrogen cyanide (1.5), acetonitrile (1.3), ammonia sulfate (0.15). Environmental fees are estimated as emissions (0.001), wastewater per kg organic loading (0.5), acid water per kg acid (0.05), incineration organics/water (0.6), incineration organic solids (1.2) and landfill (0.20). In addition, consider a C02 penalty of 0.10 /kg. 

From the text of the order placed by the Central Construction Management ( Ship 10 gas detectors immediately, as discussed [...] quote price later ) it also becomes clear that after a discussion with the firm of Topf and Sons the Central Construction Management was in a position to expect that the devices would be shipped without delay and that the price would be up to Topf. Both, however, could only have been the case for products that were part of Topf s standard stock, and thus not possibly for hydrogen cyanide residue detectors. The latter is also clearly apparent from Topf s reply, which indicates the necessity for laborious research to locate the manufacturers of these detectors. 

Any alternative process to the ACN process (Scheme 2.4) must have costs which are more attractive to be successful commercially. Various factors, including raw material and energy cost, waste disposal costs, environmental impact, and plant investment have to be considered. Both ethylene and propylene costs are related to the price and availability of crude oil whilst hydrogen cyanide is coupled with the output levels of acrylonitrile. In the overall assessment of which process to operate all these factors have to be evaluated and weighed against each other. However, it does appear that BASF s clean process will provide a competitive edge in the very near future. 

In addition to iron oxide, other metals oxides were tried. Nickel, in particular, proved to be an active agent for hydrogen sulfide removal. However, nickel forms soluble salts with hydrogen cyanide from which it cannot be easily regenerated. Because of this problem, and its relatively high price compared to iron, nickel was never used on a large scale. 

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