THIS PRODUCT IS A 100% SUBSTITUTE FOR "BESTINE Brand" THINNER AND SOLVENT which is used for reducing rubber cements, this thinner can also be used for cleaning metal or for thinning rubber cement to make frisket. Synonyms: n-Heptane; normal heptane; dipropyl methane; heptyl hydride CAS No.: 142-82-5 Molecular Weight: 100.20 Chemical Formula: CH3(CH2)5CH3