Dimer acidis yellow transparent viscous liquid. It is a compound made from *8 carbon unsaturated acids via intermolecular forces. The raw material of Dimer acid is rectified cotton oleic acidand soybean oleic acid, using advanced polymerization acidification process and separation technology to get high purity dicarboxylic acid. Dimer acid has stable performance, non-toxicity, non-volatile, high flash point and fire point, good liquidity, do not freeze in low temperature and soluble in most organic solvents.