Fluorescent Brightener Sf Optical Brightening Agent 374

• CAS No.: Na
• Formula: Na
• EINECS: Na
• Environmental Protection: Yes
• Color: Yellow-Green
• Kind: Fluorescernt Brighening Agent
• Model NO.: OBA374
• Appearance: Liquid
• Application: Textile Printing Auxiliary, Dying Auxiliary, Whitening Agent for Acrylic
• H.S.Code: 32042000
• Transport Package: 25kgs Drum
• Specification: 20-25%
• Trademark: AFINE
• Origin: China
• HS Code: 3204200000

Product Description

Fluorescent Brightener SF C.I.374

Chemical name: Stilbene derivative

Appearance: Slight Yellow liquid

Ionic character: Nonionic

PH value: 5 ~ 7

Solid content: 20% (min)
Property: Mainly be used in whitening of polyester fabric and its blends with strong fluorescence, high whitening performance,  good fastness to light, wash and excellent fastness to sublimation.

Process:

Pad-thermos fixing process
EB-330 2-3g/L (should be adjusted according to the sample testing), procedure: pad(two dips and two squeezes, residual liquor content 70%) →dry(100ºC) →(180-200ºC, 20-30s).
Attention:
The goods must be rinsed thoroughly after pretreatment to ensure the PH below 8 the PH of the pad liquor should be adjusted to 4-5 with acetic acid.
HT exhausting process
EB-330            0.2-0.3%(o.w.f)   liquor ratio   1:10-30
Treating temperature 120-130ºC        Treating time  30-60min
PH                5-10 (5-7 is specially recommended)

Items	Specifications	Results
Appearance	Slight yellow-green Liquid	Conform
Active content	≥25%	25.8%
Particle size	2-3um: ≥90%	2-3um: ≥95%
PH	6~7	6.5
C.I.E whiteness	Wg: 141.3   Tw: 4.97 (Usage 0.2%)