White Coloured Guaifenesin Crystalline Powder is available with a purity level of 98 to 101.5 %. Guaifenesin is offered in white crystalline powder form. Guaifenesin Powder can melt at a temperature range of 79 to 83°C. White Coloured Guaifenesin Crystalline Powder is used for various purposes in the laboratories and formulated using accurate composition to ensure safety of usage.