Optical Brightener 210

• CAS No.: 28950-61-0
• Formula: C40h36n12o14s4na4
• EINECS: 28950-61-0
• Classification: High Purity Material
• Grade: AR
• Specific Usage: Used for Paper
• Model NO.: Optical Brightener 210
• Content: Used for Paper
• Usage: Paper
• Source: Used for Paper
• Habit Appellation: Fine Chemicals
• Application: Industry
• Property: Liquid
• Transport Package: Drum
• Specification: KG
• Trademark: IDEFU
• Origin: China
• HS Code: 320420
• Production Capacity: 3000000mt/Year

Product Description

FLUORESCENT BRIGHTENER 210
CAS:28950-61-0
MOLECULAR FORMULA: C40H36N12 Na4O14S4
MOLECULAR WEIGHT:1128.1(As International relative Atom Mass 2005)
Max UV ABSORPTION WAVELENGHTH: 349±1nm
EXCUTIVE STANDARD: HG/T 3970-2007
SPECIFICATIONS:
 Item       Indices
Appearance   Amber transparent liquid
Fluorescent strength (equivalent to standard sample)     35
Whiteness (WCIE) (equivalent to standard sample) ≥ -0.3
Viscosity (25ºC), mPa.s        ≤50
pH value 8-10
Density, g/cm3     1.1-1.2
Ionicity    Anionic
PROPERTY:
 1. Easily used, and can be mixed with water at any ratio. Suitable for automatic continuous addition & gauge.
    2. Excellent acid resistance and excellent whiten effect even in low pH value solution.
    3. Advanced nanofiltration membrane technology is applied for this material and has low salinity and better store stability under normal temperature.
    4. Compared with other products, FWA-APC has better sunlight fastness and alkaline resistance.
    5. Kept stable above 0ºCand cooled freeze -3ºC, but have no influence on its usage when hearted and dissolved again.
USEAGE:
 1. Fluorescent whitening agent for paper pulp bleaching.
    2. Fluorescent whitening agent in the process of surface gluing.
    3. Fluorescent whitening agent in the process of coating.
PROCEDURE:
 l. Addition to the stock: adding without dilution. Usual dosage: 0.05-1.2% on dry pulp.
    2. Addition via size press: combined with starch, CMC, PVA and other products designed for surface sizing. Usual dosage: 0.5-10 g/L.
 3. Addition to the pigment coating mixtures: adding in any stage of building coating material. Good performance with the carrier of CMC, PVA and starch. Usual dosage: 0.1-1.4% on dry pigment.
PACKAGE AND STORAGE:
 1000 kg, 200 kg or 50 kg plastic drum, or for the special demand. Should be stored cool, dry and ventilate place, and storage period should not exceed 6 months.
NOTE:
 1. The information of our products is for reference only. We are not responsible for any unexpected results or patent dispute caused by it.
   2. Please contact us timely if you have any problems in technology or application.