Hydraulic fracturing fluid additive; Benzyl chloride is a clear, colorless liquid that is used primarily as a chemical intermediate in the manufacture of dyes, plasticizers, lubricants, gasoline additives, pharmaceuticals, tanning agents, and quaternary ammonium compounds. Also used as an irritant gas in chemical warfare (HSDB 2005) and in the manufacture of photographic developer (HSDB 2005)
2-Ethyl-1-hexanol is an alcohol that is a colorless liquid at room temperature with a slighty floral odor. 2-Ethyl-1-hexanol is used as a solvent for dyes, oils and resins as well as a plasticizer for PVC resins and a wetting agent. It can be manufactured by the hydrogenation of 2-ethyl-1-hexenal (HSDB 2003).
Hexamoll® DINCH® is manufactured by BASF Corporation and is a clear colorless plasticizer that was developed for use in applications that are sensitive based on exposure and toxicological issues. Hexamoll® DINCH® is suitable for use with PVC and other polar polymers (BASF 2009). The major applications of Hexamoll® DINCH ® are use in food packaging, wire and cable, automotive, plastisols, and other related applications (NICNAS 2012).
Tris(2-ethylhexyl) trimellitate (TEHTM) is a plasticizer used for high temperature applications, or when low volatility and high viscosity are important. TEHTM is a U.S. EPA High Production Volume chemical with an estimated global production of 40,000-100,000 tons/year (CPSC 2009). TEHTM’s primary use is in electrical cable insulation and sheathing. In addition, as a branched molecule, TEHTM is more viscous than other available plasticizers, such as linear adipates and phthalates, and thus can be used where high viscosity is required. The extraction and migration resistance of trimellitates are also significantly improved relative to phthalate plasticizers, leading to TEHTM’s recent use in dishwasher gaskets, medical tubing and photograph storage (CPSC 2009).
DPHP is a plasticizer used for PVC and vinyl chloride co-polymers. The product is used in automobile undercoating, building materials, wires, cables, shoes, carpet backing, pool liners, and gloves. Concentration of chemical in final products typically ranges from 30-60% (NICNAS 2003).
Di(2-ethylhexyl) terephthalate (DEHT) is a phthalate alternative. DEHT is not considered to be a part of the common “phthalate ester” class as it is not ortho-substituted. DEHT is compatible with use in cellulose acetatebutyrate, cellulose nitrate, polymethyl methacrylate, polystyrene, polyvinyl butyral, and PVC resins (CPSC 2010).