Two companies have each two production locations. Cryotherapy and salicylic acid (SA) often fail as treatments for skin warts. Monochloroacetic acid (MCAA) is a specialty organochlorine compound, also known as chloroacetic acid. The invention relates to a process for preparing monochloroacetic acid (MCA) comprising a chlorination step and a hydrogenation step and is characterized in that said process comprises the removal of aldehydes from a process stream by oxidation using a peroxycarboxylic acid. Uses Chloroacetic acid is used in the manufacture of cellulose ethers (used mainly for drilling muds, detergents, food, and pharmaceuticals), as a post-emergence contact herbicide and defoliant, and in the manufacture of glycine and thioglycolic acid. Monochloroacetic acid has further uses as a raw material for chemical synthesis, as in the manufacture of pharmaceutical preparations (caffeine, vitamins, barbiturates), textile auxiliaries, dyestuffs (indigo) and dextrin. Abbreviations: CI, confidence interval; MCA, monochloroacetic acid; SA, salicylic acid. Monochloroacetic Acid 80% solution (above 18 0 C.) in water and Monochloroacetic Acid molten (above 62 0 C), is a clear fluid with a characteristic acidic odor. A participant was considered cured when all warts present at baseline had disappeared at follow-up. 1.4 Major uses Monochloroacetic acid is used in research and development laboratories, in medical and surgical hospitals and in chemical and pharmaceutical preparations. Our offered range of chemicals such as Monochloroacetic Acid, Neopentanoic Acid, Cyclo Aliphatic Diols, Epoxy Resins, Dimer Acid, Reactive Polyamide, Amine Hardeners, Pivalic Acid, Trimethylolpropane (TMP) and many more finds use in resin manufacturing, pharmaceutical, aerospace, agrochemical, automotive, dyes and pigment Industry. It is a building block in organic synthesis, and is hence used in the production of various chemical compounds, drugs, and agrochemicals. A preferred peroxycarboxylic acid comprises peracetic acid. Consecutive patients aged 4 years and older with one or more newly diagnosed common or plantar warts were recruited in 53 Dutch general practices. Depending on the temperature, aqueous solutions are subject to extremely slow hydrolysis that ultimately results in the formation of glycolic acid and hydrochloric acid. We examined the effectiveness of monochloroacetic acid (MCA) for patients with common or plantar warts. In the European Union MCAA is produced by three companies at five different locations. Monochloroacetic acid can be used for a number of further reactions besides those typical of monocarboxylic acids. It is also used in fabric mills, in communication equipment (television, radio, telegraph) and in Values are numbers of participants cured/number of participants in intention-to-treat analysis at 13 weeks, and percentages of participants cured with 95% CI. The chemical industry can both produce monochloroacetic acid (hereafter referred to as MCAA) and the sodium salt of monochloroacetic acid (SMCA). SMCA is obtained by converting MCAA with caustic soda.