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Pretreatment Agents
Product Details

DHK129B is a special anionic/nonionic surfactant. Has excellent wetting, washing, scouring properties, especially good under alkaline condition. Suitable for oil removing and scouring process for polyester, cotton, flax, silk and so on.

Key Features and Typical Benefits

◆ Can fully emulsify and disperse the oil in neutral or weak acidic condition, especially for spinning oil.

◆ Little color change, can prevent oil spot and stain in scouring and dyeing process with disperse dyes. Has good oil removing effect under neutral condition.

◆ No damage to fibers, APEO-FREE

◆ Can effectively improve whiteness and wetting property, has good scouring effect.

◆ Has better oil removing effect and scouring effect under alkaline condition.

◆ Little color change to color fabrics and tinsel yarn.




Physical form



Colorless to syellowish transparent liquid

Solid Content (%)


pH value(1% aqueous solution)


Flash Point(°C)


Density ( 25°C),g/cm3


Ionic Character



DHK129B is easily soluble in water, can be used after dilution with water, suitable for oil removing, scouring, and scouring and dyeing in one bath for knitted polyester in over flow machine, jig machine, sand washing machine.

1. Oil removing for white fabrics:   

Dosage:         0.5-2.0g/L

Soda ash:        1-2 g/L

Ratio:           1:10

Temperature:     around 100℃    Time:           20-40min

2. Low temperature oil removing process for color fabrics and tinsel yarn:   

Dosage:        0.5-2.0g/L

Ratio:          1:10 

Temperature:    60-80℃   Time:          20-40min

3.  Bleaching free pretreatment for dark knitted cotton and cheese:

Dosage:          0.5-1.5g/L;

Soda ash:         3 g/L or NaOH 0.5-1.5g/L;

Ratio:            1:10

Temperature:      60-80℃

Time:             20-40min

The treated fabric can be dyed directly dye after washing 1 time.

4.  Alkali-oxygen in one bath for knitted cotton and cheese

Dosage:                0.5-2g/L

NaOH:                 2g/L

H2O2(100%):            1.5-2.5 g/L

Stabilizer: 0.3-0.4 g/L

Ratio:                  1:10

Temperature:           95-98℃

Time:                  30-40min;

5. Scouring and dyeing in one bath for disperse dyeing:

Dosage:                0.5-2g/L

Leveling agent: 0.5-1.0g/L

Disperse dyes:           X

pH:                    5.5

Ratio:                 1:10

Temperature:           130℃

Time:                 30-60min

Operating and safety instructions

1. Suggest weighing and diluting separately when preparing the solution.

2. Strongly recommend using soft water in dilution, if soft water is not available, the stability needs to be tested before making the solution.

3. After dilution, it should not be stored for a long time.

4. To ensure the safety, you should review our Material Safety Data Sheets before using this product under special conditions. MSDS is available from us. Before handling any other products mentioned in the text, you should obtain available product safety information and take necessary steps to ensure safety of use.

Package & Storage:

Plastic drum net 50kg, it can be stored for 12 months under room temperature and hermetic condition without exposure to sunlight. 

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Qingdao Hengke Fine Chemicals Co.,Ltd