Nipastat is the brand name for a mixture of parabens (parahydroxybenzoates) by Clariant, a chemicals company. Parabens are a type of compound used as a preservative in pharmaceuticals, cosmetics, and food. Nipastat is a white powder at room temperature, but is typically dissolved into a liquid product. Nipastat acts to prevent the growth of bacteria, mold, and yeast. Nipastat is a mixture of five common parabens: methylparaben (50-60%), butylparaben (12-17%), ethylparaben, (13-18%) propylparaben (6-9%), and isobutylparaben (6-9%). When Nipastat is added to a product, the recommended final weight of Nipastat is between 0.05% and 0.3% of the total weight. Nipastat is stable at a range of pHs between 4 and 8.