Chemical Optical Brightener Ob-1 C. I. No. 393 for Plastic/Fluorescent Brightener Ob-1/Oba 393

• CAS No.: 1533-45-5
• Formula: C28h18n2o2
• EINECS: 216-245-3
• Appearance: Powder
• Usage: Plastic Auxiliary Agents
• Color: Yellow-Green-White
• Purity: 98%
• Brand: Ld Chemical
• Fineness: ≥200 Mesh
• MOQ: 1kg
• Shelf Life: 48 Months
• Transport Package: Bag, Drum
• Specification: 25KG/Drum
• Trademark: LD
• Origin: China Hunan
• HS Code: 32042000
• Production Capacity: 100000

Product Description

Fluorescent whitening agent OB-1

Appearance	Yellow-green crystal powder
Content	99%
Melting Point	357-361ºC
Volatile content	≤0.5%
Molecular Weight:	414.4
Max UV Absorption Wavelength:	374 nm
Max Optical Emitting Wavelength:	434 nm