Product:Fluorescent Brightener ER CAS NO.:13001-40-6 C.I.199 Molecular Formula:C24H16N2 Molecular Weight:332 Purity: 99% Appearance: Yellowish crystal powder MP: 215-228℃ Application: ER is ideal at using into synthetic fiber for obtaining brighten effect. It's also good at applying into PVC, PE, PP,PS etc, Packing: 25Kg cardboard drum lined with double plastic bag