Appearance: Yellowish or yellowish green crystal powder/granular
E (1% /cm): 1105-1181
Indissoluble substance:0.5%max
max in ultra-violet range:348-350nm
Ionic character:anion
Sell optical brightener OB1 Appearance:bright yellow crystals powder
Purity:98.5%Min
Melting point:355-360
Solubility:insoluble in water,but soluble in high boilding point organic solvent such as phenyl-chloride
Packing:in...
Supply Optical brightener OB Appearance:light yellow powder
Purity:99.0%Min
Melting point:201-202
Solubility:hardly soluble in water,but soluble in paraffin,mineral oils and ordinary organic solvents.
packing:in 25kgs fiber...