NEWS
Potassium Chlorate in the Printing and Dyeing Industry
Release time：
2026-11-05 16:21
Source：
Potassium chlorate is a common oxidant used in printing and dyeing processes and plays an irreplaceable role in the dyeing of aniline black.
As an important black dye for cotton fabrics, aniline black cannot be applied directly. It needs to form in situ through oxidation on the fabric. During dyeing, the fabric is padded with a dye liquor containing aniline salt, potassium chlorate and other auxiliaries. Under acidic conditions, potassium chlorate releases oxidizing properties slowly and promotes the gradual oxidation and condensation of aniline, forming a firm black lake inside the fibers.
Compared with other oxidants, potassium chlorate has a moderate oxidation rate and ensures uniform dyeing. It produces a rich, deep black color with good wash fastness and rubbing fastness, suitable for mass deep-color processing of cotton cloth.
However, potassium chlorate is a strong oxidant. It must be stored away from combustibles such as cotton yarn and auxiliaries in dyeing workshops to prevent fire caused by mixed materials. During production, the acidity and temperature of the dye liquor are strictly controlled to avoid excessive oxidation. With stricter safety requirements in the printing and dyeing industry, safer alternatives are being explored to balance dyeing performance and safe production.
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