This is the part that's in the polyester resin and reacts with the polyester catalyst to cause everything to polymerize. Generally, more is not needed, but if it happens to be cold or you just want to increase the reactivity of the resin you're using, adding as little as 1/4% to the resin can help to speed things along without having to change your catalyst ratio. NEVER MIX POLYESTER CATALYST AND COBALT NAPHTHENATE TOGETHER!
Special Shipping Notes: This product is classified as "Restricted" by the DOT. This means that this product can only be shipped via UPS Ground Service. TIP: If you are ordering other items that need to be shipped via a faster service, consider placing all "Restricted" items on one order and all other items on another order with faster shipping.