Description
What is sulfamic acid?
Sulfamic acid (amidosulfuric acid) is a monobasic, mineral, and dry acid that is produced in crystalline form. This acid is highly stable at room temperature. Its aqueous solutions are classified as strong acids similar to hydrochloric acid and sulfuric acid. Sulfamic acid is available in dry form, which allows for easy packaging and transportation. It is a colorless crystalline substance with the chemical formula NH2SO2OH. This compound melts and decomposes at temperatures between 200-205 degrees Celsius and has high solubility in water. It completely decomposes into nitrogen, water, and sulfur dioxide at 260 degrees Celsius.
What are the uses of sulfamic acid?
– Descaling steam boiler pipes:
This acid is used to clean a wide range of household items and industrial equipment such as steam boilers. Its concentrated form helps remove hard water deposits, copper corrosion, and light rusting.
– Metal cleaning:
This compound removes metal rust and its solution is less corrosive to metals compared to other mineral acids such as hydrochloric acid.
– Equipment cleaning:
Sulfamic acid has the ability to dissolve deposits, making it an effective equipment descaler in factories. It has less corrosiveness compared to hydrochloric acid. Corrosion inhibitors are usually added to the cleaning agents used in equipment, with sulfamic acid being one of them.
– Surface cleaner:
This acid is used for descaling in toilet cleaners and removing deposits on floor surfaces in households. It is preferred over hydrochloric acid for safety reasons. When mixed with hypochlorite-based products such as bleaches or other common acids, it does not produce chlorine gas. It neutralizes the solution of bleach, making it effective and safe for household use.
– Chloride stabilizer:
Sulfamic acid is used to stabilize chlorine in swimming pools and cooling towers. It helps the chlorine in the pool last longer and become more effective. The stabilized chlorine saves costs of purchasing chlorine and makes water maintenance easier and longer-lasting.
– Bleaching additive in paper and pulp industries:
This acid prevents the degradation of pulp due to its high temperature during chlorination, allowing for bleaching at high temperatures and pH reduction without losing its effectiveness.
Production method of sulfamic acid
This acid is obtained by reacting sulfuric acid, sulfur trioxide, and urea. This reaction is highly exothermic and can be dangerous if not performed carefully. Various methods have been developed to control the reaction, but they have not been satisfactory due to difficulties in recovery and excessive cooling problems.
The production mechanism of this compound is carried out in two stages. First, urea and sulfuric acid are combined with equal molar amounts of each other, and time is given for the reaction to occur. In the next stage, the reaction mixture is added to a container containing sulfur trioxide, where the reaction is completed.
purchase Sulfamic acid
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