Characteristics
Appearance: Uniform, light pink, powdery particles
Specific gravity: 0.9 ± 0.1
pH: 4.5 ± 0.5 (1‰ aqueous solution)

Application
1. Effectively acts on indigo dyes and also exhibits a certain degree of activity toward reactive and sulfur dyes.
2. Quick processing—no heating required, no bleaching needed.
3. Gentle bleaching to maintain fabric strength and elasticity.
4. Replaces salt-frying and full spraying; the bamboo-node pattern on the fabric is clear and does not damage the base.
5. Emergency Treatment for Color Bleeding After Denim Washing
6. Impart a distinctive washed look to the garment
7. After the stone-grinding enzyme treatment, adding an appropriate amount of salt-based powder for rinsing can reduce or even eliminate the need for stones, remove floating indigo dye, enhance color definition, and produce a striking blue-and-white contrast.

Reference Process

Enzyme dosage: 0.5–2.0 g/L
Bath ratio: 5:1–12:1 L/kg (water to fabric)
Processing time: 5–20 minutes (specific duration depends on processing requirements).
Operating temperature: 20–35°C; optimal temperature: 25–30°C.
pH: 4.5–5.5 (no adjustment needed)

Operating Requirements

1. Dosage: Adjust the dosage according to the water level; typically 0.5–2.0 g/L (i.e., 1,000–2,000 g per 1,000 L of water). The exact dosage should be determined based on the desired degree of bleaching.
2. Temperature: 20–35°C; optimal range: 25–30°C (water temperature in summer generally meets this requirement, so no heating is necessary).
3. pH: When the dosage of this product is 1 g/L, the pH is optimal. If the dosage is too low, the pH may be too high; if the dosage is too high, the pH may be too low. It is recommended to add the enzyme to the water-washing machine and then use precision pH test paper to verify that the pH is within the optimal range of 4.5–5.5. If the pH falls outside this range, it can be adjusted to the optimal level using glacial acetic acid or sodium carbonate.
4. Precautions when adding salt powder:
4.1. Since chlorine powder reacts immediately upon contact with water, it must not be dissolved in water beforehand and then added to the washing machine; instead, the solid chlorine powder must be added directly to the machine—this differs from bleach and potassium permanganate, which do need to be pre-diluted.
4.2 When adding solid chlorine powder to the washing machine, it must be added while the machine is running; otherwise, garments that come into direct contact with the chlorine powder will be bleached first, resulting in uneven bleaching. This principle is the same as when adding bleach or potassium permanganate—both must be introduced while the machine is in operation.
5. Reaction time: Bleaching is completed within 20 minutes; after 20 minutes, the effectiveness of the chlorine powder gradually diminishes.
6. Post-bleaching treatment: If the fabric exhibits a reddish tint after bleaching, it is recommended to add 1–2 g/L of sodium carbonate, adjust the water temperature to about 30°C, and rinse for 5–10 minutes. Follow this with two additional rinses with clean water to ensure the fabric surface is thoroughly clean and visually appealing.

Precautions

Since salt-based powder becomes active immediately upon contact with water, it must be handled using dry beakers, or pre-weighed by the weighing staff and packaged in plastic bags for workers to use. It is recommended to weigh only the amount needed at any given time, and to ensure that the bags are tightly sealed when not in use, as moisture absorption can degrade the performance of the salt-based powder.

Saltine Powder PM-201 is a brand-new low-temperature bleaching enzyme preparation that opens up innovative new ways to create fashionable results and delivers an easy-to-use, environmentally friendly new process.