GL-1800 is a mercaptan(-SH) based compound used as a liquid curing agent for Bisphenol A epoxy resin with unique rapid curing characteristic under ambient conditions. This is   an odor-reduced and low toxicity version of un-catalyzed mercaptan polymer. When formulated with tertiary amines it provides rapid curing on epoxy systems at low temperatures and in thin films. This mercaptan has excellent color and is especially fit for transparent epoxy systems or other systems in which clear color is a requirement.