Trichloromethane as a Solvent in Industry

The question asks to identify a substance commonly used in industry as a solvent for fats, waxes, resins, and rubbers. Let's look at the properties of the options provided:

• Dichloromethane (CH₂Cl₂): Also known as methylene chloride, it is a highly effective solvent for many organic compounds, including fats, waxes, and resins. It is volatile and widely used in various industrial processes, including paint stripping, degreasing, and as a propellant.
• Trichloromethane (CHCl₃): Commonly known as chloroform, it is a powerful organic solvent. It is historically known for its use as an anesthetic, but its primary industrial application is as a solvent. It is effective at dissolving many organic substances, including fats, waxes, resins, and rubbers. It has been used in dry cleaning, as a solvent for lacquers, and in the purification of various organic compounds.
• Carbylamine: Carbylamines, or isocyanides, are a class of organic compounds containing the –N=C functional group. They are typically toxic and have strong, unpleasant odors. While they are used in specific chemical synthesis reactions (like the Carbylamine reaction), they are not commonly used as general industrial solvents for materials like fats, waxes, resins, and rubbers.

Comparing Dichloromethane and Trichloromethane as Solvents

Both dichloromethane and trichloromethane are effective organic solvents belonging to the class of halogenated hydrocarbons. They are non-polar or slightly polar, making them good at dissolving non-polar or slightly polar substances like fats, waxes, resins, and rubbers. However, trichloromethane (chloroform) has been historically and widely used specifically for dissolving fats, waxes, and various types of resins and rubbers due to its potent solvent properties for these specific materials.

While dichloromethane is also a strong solvent and has many industrial uses, trichloromethane is particularly noted for its effectiveness with this specific group of substances (fats, waxes, resins, rubbers).

Conclusion on the Industrial Solvent

Considering the common industrial applications and solvent properties, trichloromethane (chloroform) is a well-known solvent for fats, waxes, resins, and rubbers.