Dyestuff industry experts

Disperse TXF Series
Home » Information » Industry Encyclopedia » Which PH value is required for water in dyeing process?

Which PH value is required for water in dyeing process?

Views: 1     Author: Site Editor     Publish Time: 2021-02-08      Origin: Site


facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

For reactive dyeing, when the pH value is 7-9, the color difference of the product is normal, indicating that the pH range has little effect on the color difference of the product, and the presence of a small amount of alkali will not change or destroy the chromogenic group of the reactive dye molecule.


When the pH value is 8.5, the soaping color fastness and wet rubbing fastness of the fabric are level 3, which cannot meet customer requirements; when the pH value is further increased, the color fastness becomes worse. It can be seen that the alkalinity in the water increases, Affect the color fastness of dyed products.


The influent water quality of sewage reuse plants generally requires a pH value of <9 to ensure that the microbial growth of the treatment system is not harmed by alkalinity and can operate normally. The quality standards for reused water require a pH value of 85, preferably close to 7.

Related Articles

content is empty!

Didn't find what you want?

We look for the best partner to share our product range and our philosophy! Welcome to be our next partner!
You can contact us now and tell us what you need, and we will reply to you immediately.
Contact us



copyright 2020 ©  Hangzhou Tiankun Chem Co.,Ltd 杭州天昆化工有限公司