Strong research and development and production capacity in textile auxiliaries, polyurethane waterproofing additives and other materials.

Pretreatment Agents
Multifunctional Bleaching Agent PRE-DHK197

Multifunctional Bleaching Agent PRE-DHK197

Product Details



Multifunctional Bleaching Agent




DHK  Q  197  is  a  multi-function  agent  for  alkaline

bleaching process. It is a all-in-one alkaline donator, stabilizer  and  wetting  agent,  which  is  suitable especially for cotton, linen and their blends.





-   is  suitable  in  process  on  jig,  overflow  dyeing
machine, pad-steaming, and cold-pad batch
-   replaces caustic soda, stabilizer and wetting agent
-   removes fatty more completely and reaches higher

- is more gentle to the fibre than caustic soda

-  is suitable for rapid bleaching at high temperature -    Good leveling properties

-   Good wetting properties



Technical Data


Appearance :   White powder

PH-value : 11 - 12 after dissolving

Ionic: Weakly anionic

nature : Dissolving Easy dissolving in warm water


Shelf life : 1  year  in original  packing, keep dry

and cool.




--Bleaching of cotton or polyester/cotton on overflow dyeing


Hydroperoxide ( 35% ) 5 ml / l

DHK Q 197 2 - 3g / l

Liquor to goods ratio 1   : 10

95 - 100ul0 C ,   30 - 40 min.

Rinse with hot water


--Bleaching of linen on overflow dyeing machine

Hydroperoxide ( 35% ) 10 - 15 ml / l

DHK Q 197   3 - 5 g / l

DHK Q 130   0 - 2 g / l

Liquor to goods ratio   1 : 10-15

95-100C, 40-60min.

Rinse with hot water


--Bleaching of cotton in pad-steam process

Hydroperoxide ( 35% ) 30 -50 ml / l

DHK Q 197  10 -20 g / l

DHK Q 130  3 - 5 g / l

Bath pick-up:  100 -130%

Padding, steaming at 100, 60 min.

Rinse with hot water


--Bleaching of cotton in cold pad-batch process

Hydroperoxide ( 35% )  30 - 50 ml / l

DHK   Q 197  30 - 50 g / l

DHK    Q 130  2 - 3 g / l

Bath pick-up;  100 - 130%

Padding, storing at room temperature for 16 hours Rinse with hot water (95ul0C, 1 -2 min.)

--Boiling-off, bleaching and dyeing in one bath

Direct dyes (hydroperoxide stable dyes)

Hydroperoxide (35%) 5% on fabric weight

DHK Q 197   3% on fabric weight

This information and our technical advice – whether verbal, in writing or by way of trials – are given in good faith but without warranty, and this also applies where proprietary rights of third parties are involved. Our advice does not release you from the obligation to check its validity and to test our products as to their suitability for the intended processes and uses. The application, use and processing of our products and the products manufactured by you on the basis of our technical advice are beyond our control and, therefore, entirely your own responsibility. Our products are sold in accordance with our General Conditions of Sales and Delivery.

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Qingdao Hengke Fine Chemicals Co.,Ltd