2013 Re: T.R.U.E Test and gold Dear Health Care Professional ...

Cobalt Dichloride (Position 12):Cobalt dichloride hexahydrate (purity ≥98.5%) is used to formulate this patch. The active allergenic component is cobalt. The gel vehicle is hydroxypropyl cellulose.The product is formulated to contain 20 mcg/cm 2 of cobalt dichloride hexahydrate, which corresponds to 4 mcg of cobalt per patch. Cobalt is found inmetal-plated objects and costume jewelry.11.2 Allergens on Panel 2.2p-tert-Butylphenol Formaldehyde Resin (Position 13):p-tert-Butylphenol formaldehyde resin (purity ≥95%) is used to formulate this patch. The active allergenic components have been identified as p-tert-butylphenolformaldehyde and numerous other compounds. The gel vehicle is hydroxypropyl cellulose. The product is formulated to contain 45 mcg/cm 2 of p-tert-butylphenolformaldehyde resin, which corresponds to 36 mcg of p-tert-butylphenol formaldehyde resin per patch. This resin is found in many waterproof gluesused in the leather goods, furniture, and shoe industries.Epoxy Resin (Position 14):Epoxy resin, a clear viscous liquid, is used to formulate this patch. It consists of 75% to 85% diglycidylether of bisphenol A, the active allergenic component,which is a monomer used for the preparation of polymer epoxy resins. The remaining part consists of the dimer and the trimer. The gel vehicle is hydroxypropyl30