Sell Optical Brighteners ER-330

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Optical Brightening Agent ER-330
Main Chemical Composition: stilbene derivative
C. I. number: 199

Appearance: slight yellow liquid

Ionic character: nonionic

PH value: 5-7

Active content:>=20%
Property: mainly 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.

1. Pad-thermos fixing process
ER-330 2-3g/l (should be adjusted according to the sample testing) , procedure:
pad(two dips and two squeezes, residual liquor content 70%) dry(1000C)
cure(180-2000C, 20-30s)

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
2. HT exhausting process
ER-330 0.2-0.3%(o. w. f. ) liquor ratio 1:10-30
Treating temperature 120-1300C treating time 30-60min
PH 5-10(5-7 is specially recommended)
Packing: 25kg per plastic drum