RXSOL-20-2099-210 A fast-evaporating glycol ether with an excellent balance of hydrophilic and hydrophobic character; excellent active solvency and coupling properties.is a very versatile solvent product with a good balance of many different properties. With a nearly equal balance of hydrophobic and hydrophilic character, RXSOL-20-2099-210 provides excellent performance in coatings, cleaners, and many other types of products.