Caustic Soda 50% for Mercerizing
CAS Number: 1310-73-2
Caustic Soda (NaOH) 50% liquid solution for textile mercerizing applications. Mercerizing cotton fabric with concentrated NaOH (200–280 g/L) under tension permanently swells cellulose fibers, increasing luster, dye uptake, dimensional stability, and tensile strength. The 50% liquid grade is convenient for continuous mercerizing ranges with automatic dilution systems.
Technical Specifications
| NaCl (%) | ≤0.05 |
| Na2CO3 (%) | ≤0.5 |
| appearance | Colorless to light gray liquid |
| Fe content (ppm) | ≤10 |
| NaOH content (%) | ≥50 |
| active content (%) | ≥50 |
Applications
- Cold (20°C) and hot (60°C) mercerizing of cotton woven fabric
- Chain mercerizing of cotton yarn for dye uptake improvement
- Alkali treatment for bamboo viscose fabric pre-treatment
- Scouring bath alkali source for cotton pre-treatment
- Preparation of high-concentration NaOH dye fixation bath
Key Features
- High purity with low iron content to prevent fiber yellowing
- Liquid form enables precise metering in continuous mercerizing ranges
- Recoverable — spent alkali can be reconcentrated for reuse
- Improves subsequent reactive dye uptake by 10–20% on mercerized cotton
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CAS Number
1310-73-2
Category
Textile Dyeing AuxiliariesAvailability
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