Paraffin wax is a nonpolar alkane mixture that dissolves readily in nonpolar organic solvents such as hexane or toluene based on the principle of like dissolves like, making this a matter of common knowledge requiring no citation.
The claim is a fundamental chemical fact ('like dissolves like' applied to nonpolar saturated hydrocarbons dissolving in nonpolar organic solvents) that is part of baseline scientific knowledge. Per instructions, trivially true or everyday chemical facts are categorized as COMMON_KNOWLEDGE, avoiding unnecessary citations.