China Ob-1 Oba 393 Optical Brightening Agent Fluorescent Brightener Used for Plastics, Find details about China Ob-1, Optical Brightening Agent Ob-1 from Ob-1 Oba 393 Optical Brightening Agent Fluorescent Brightener Used for Plastics
Items | Specifications | Results |
Appearance | Yellow or yellowish green powder | Conform |
Assay (HPLC) | ≥98.5% | 98.90% |
Melting point | 355~360ºC | 357.4~358.8ºC |
Volatile matter | ≤0.5% | 0.29% |