Kothari Phytochemicals International manufactures Colourless Pungent Formaldehyde Liquid. Kothari Phytochemicals International offers bulk drugs, phytochemicals, and medicinal plants. Colourless Pungent Formaldehyde Liquid is manufactured from methanol by the process of oxidation over the Silver Catalyst. Methanol is vaporised and passed through the Catalyst where the temperature is maintained at 700° C. At this higher temperature Methanol vapour converts itself in for Formaldehyde vapour and the same is cooled with chilled water to form in the liquid stage.