BC-105(CXT)

Purpose:

It is mainly used for the whitening and brightening of cotton fiber and its blending fabric as well as whitening of nylon, silk, paper and bast fiber.

Usage: (for reference only)

（一）Cotton fiber:

BC－105 applies to whitening on traveler sprinkling dyeing machine, jet dyeing machine and package dyeing machine, the the most commonly used method is use BC－105 together with hydrogen peroxide and alkali in one bath, and the optimal PH scope is 8.0-10.

（二）Whitening of polyester/cotton blended fabric:

The whitening of cotton fiber of polyester/cotton blended fabric can refer to method for whitening of 100% cotton fiber. However, if the whitening of polyester in polyester/cotton blended fabric is required, add BC—103 fluorescent brightener for polyester fiber to bath, and its reference formula is as follows.

（三）Influence on whitening effect by cationic softening agent:

In order to control the whiteness after being whitened by BC－105, it is very important to control PH value when processing with cationic softening agent, when keeping PH above 6, it will be free from yellowing.

Cautions:

1. This product's solubility in water is medium, dissolution shall be conducted in 70-80℃ in hot water, it shall not be poured once, and be used after full mixing to avoid caking.

2. The optimal use quantity of this product is 0.15%-0.35% (o.w.f); small yellowing point scope ≤0.35%(o.w.f).

3. The chlorine fastness performance of this product is superior to VBL, fastness to chlorine-bleaching reaches Level 4.

4. This product is most applicable to the dip dyeing process under alkali-hydrogen peroxide bleaching condition, which can produce best effect.

Appearance: Solid is milky white powder

Solubility: Solid solubility is medium, dissolution shall be conducted in 70-80℃ in hot water, and be used after full and even mixing.

Colored light: Cyan light

Fastness: Level 4-5 (cotton fiber)

Ionicity: negative ion

25kg/carton (lined with plastic bag), 50kg cardboard bucket (lined with plastic bag).

The shelf life is 12 months at room temperature.