Sulphur black

Ammonia solution is a solution of ammonia (NH3) gas dissolved in water. It is a clear, colorless liquid with a pungent odor and a basic pH. The concentration of ammonia in the solution can vary, and is typically expressed in terms of percent by weight or by volume. Ammonia solutions are commonly used in a variety of applications, including cleaning agents, fertilizers, and as a precursor to other chemicals. They are also used in industrial processes such as refrigeration, gas purification, and water treatment. Ammonia solutions can be dangerous if not handled properly, as they are highly corrosive and can release toxic fumes if mixed with certain chemicals

Cobalt octoate is a chemical compound that consists of cobalt ions (Co2+) bound to octoate ions (also known as octanoate ions, C8H15O2-). It is often used as a catalyst in various chemical reactions, particularly those involving the curing of unsaturated polyester resins and the polymerization of vinyl chloride. Cobalt octoate can also be used in the production of coatings, adhesives, and inks. In its pure form, cobalt octoate appears as a dark blue liquid with a characteristic odor. It is soluble in a variety of organic solvents and is typically sold as a solution in mineral spirits or other solvents. The concentration of cobalt octoate in these solutions can vary depending on the intended use, with concentrations typically ranging from 1% to 12%.

Formaldehyde is a colorless gas with a pungent odor, which is used as a disinfectant, preservative, and in the production of various materials and chemicals. Formalin is a solution of formaldehyde gas in water, typically containing 37% formaldehyde by volume. It is commonly used as a tissue preservative in biological specimens for medical and research purposes. Formalin is also used in various industrial applications such as manufacturing plastics, resins, and textiles.