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Textile Chemistry
Alkali
Formula:
NaOH
GOST/CAS:
CAS 1310-73-2
Alkali (highly effective alkaline agent for the textile industry) is a specialized chemical component acting as a key intensifier and pH regulator in the processes of preparation, scouring, bleaching, and dyeing of textile materials. The product provides the optimal alkaline environment required for fiber swelling, removal of natural impurities (pectins, waxes), and the fixation of reactive dyes onto cellulosic and blended fabrics. Due to its balanced composition, it prevents harsh damage to the fiber structure, ensuring uniform subsequent finishing.
Applications
Fabric Preparation and Scouring: Used for the effective removal of sizing agents, lubricants, and natural waxy substances from cotton and linen materials. It enhances the capillarity and wettability of the fabric.
Bleaching Processes: Acts as a hydrogen peroxide activator during peroxide bleaching. It stabilizes pH levels, ensuring maximum whiteness without compromising yarn strength.
Dyeing and Fixation: An indispensable component when dyeing with active (reactive) dyes. It stimulates the formation of covalent bonds between the dye and cellulose, guaranteeing high color fastness.
Mercerization: Used in a concentrated form to impart a silky luster to cotton fabrics, increasing their strength and hygroscopicity.
Key Advantages
Stable pH Control: Provides precise and smooth regulation of alkalinity in the bath, preventing sharp pH spikes that can lead to uneven dyeing or fiber hydrolysis.
High Washing and Emulsifying Capacity: Excellently saponifies natural fats and waxes contained in cotton, converting them into a soluble state for easy washing out.
Improved Sorption Properties: Promotes maximum opening of fiber pores, accelerating the penetration of dyes and textile auxiliaries into the fabric structure.
Eco-Friendliness and Washability: Easily neutralized during the rinsing stage with acid agents, leaving no toxic salts on the fabric and avoiding heavy contamination of wastewater with complex organic compounds.
Storage & Transportation
- Store in dry, cool, and ventilated warehouses in tightly closed original packaging, away from acids and heat sources.
- Recommended temperature range: from +5℃ to +35℃. For liquid forms, do not allow crystallization (freezing) of the product.
- Avoid direct sunlight and exposure to moisture (especially for the granular form due to its high hygroscopicity).
- Transportation is carried out by all types of covered transport in compliance with the regulations for the transport of dangerous goods (classified as corrosive substances, hazard class 8).
- Shelf life — 1 year from the date of manufacture.
Frequently bought together
Technical Specifications
Appearance
Transparent or slightly opalescent liquid (aqueous solution) / White granules
Active Substance Mass Fraction
≥ 46.0% (for liquid form) / ≥ 98.0% (for solid form)
Density (at 20°C)
1.45 – 1.52 g/cm³
pH (1% aqueous solution)
12.0-13.5
Solubility in Water
Complete, without sediment formation
Supply info
- For liquid form: Industrial plastic IBC containers (1000–1200 kg) or drums (200–250 kg).
- For granular form: Multi-layer valve bags with a polyethylene inner liner (25 kg).
- Bulk delivery via tank trucks is available for large wholesale orders.