Fluorescent whitening agent 184,2,5-Di (5-tert-butylbenzoxol-2-yl) thiophene, light yellow powder, odorless, Cas No. 7128-64-5, molecular formula C26H26N2O2S, mainly used in PVC, PS, PE, PP, ABS and other plastics and acetate fiber, paint, ink and other whitening. Because of its good transmittance, it is suitable for whitening transparent plastic products.

1.Performance Metrics

Product:Optical Brightener OB

Molecular Formula: C26H26SO2N2

Molecular weight: 430.5618

C.I.: 184

CAS NO:7128-64-5

EINECS: 230-426-4

Appearance: light yellow powder

Purity ≥98.5%

Melting Point: 196-203 °C

Decomposition Temperature: above 220 °C

Standard: HG/T4707-2014

Color Light: bright blue light

UV absorption: 1100-1200

Volatile matter: ≤0.2%

Ash content: ≤0.3%

Transmittance: 450nm ≥96% , 500nm ≥97%

2.Application

(1) injection molding, blown film, color masterbatch, PVC

(2)PE、PP、PS、ABS

(3) transparent plastic products, hot-melt plastic

(4)Paint, ink, wallpaper

(5)Polyvinyl chloride, polystyrene, polypropylene, polyethylene, acrylonitrile, butadiene, styrene copolymer, styrene, acrylonitrile copolymer, butadiene cellulose acetate, polyamide (PA) , Poly(methyl methacrylate) , acrylic resin, polyester fiber (polyester)

3.Usage

(1) polyvinyl chloride: 0.01 ~ 0.05% increase brightness: 0.0001 ~ 0.001%

(2) polystyrene: 0.0001 ~ 0.05% ABS: 0.01 ~ 0.05%

(3) colorless polyolefin matrix: 0.0005 ~ 0.001% ; white matrix: 0.005 ~ 0.05% ; White: 1-5 parts per million (10g)

Transparent material: 0.01 parts per million (0.1)(0.1 g-1 g)(can improve the brightness of PVC) ;

(4) PS: 0.1 parts per million white (1g) ; 0.01 parts per million transparent (0.1 g-1g) ;

(5) ABS: 1 part per million (10g-50g)(can effectively eliminate the inherent yellow in ABS)

(6) PE, PP: colorless, 0.05 part per million (0.5 G-1g) white 0.5 part per million (5g-50g) .

4.Packaging

25kg cardboard drum, lined with plastic bags or according to customer requirements packaging.