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Textile Chemistry
Liquid Caustic Soda 48-50%
Formula:
NaOH
GOST/CAS:
CAS 1310-73-2 / ГОСТ 2263-79
Liquid Caustic Soda 48–50% (highly concentrated sodium hydroxide solution) is a strong base that serves as a core chemical component across numerous industries, with a primary focus on textile manufacturing. The product is a clear, odorless, colorless or slightly tinted liquid that is completely miscible with water. Due to its high reactivity and strong alkaline properties, caustic soda is indispensable for fabric preparation, scouring, bleaching, and mercerization processes, as well as in detergent manufacturing and water treatment.
Applications
Textile Industry: Extensively used for the mercerization of cotton fabrics (enhancing luster, strength, and dye affinity), as well as in scouring and bleaching stages to remove natural impurities and waxes from fibers prior to dyeing.
Detergent & Soap Manufacturing: Serves as a key raw material for the saponification of fats and oils in the production of soaps, shampoos, and industrial laundry or cleaning powders, providing superior degreasing capabilities.
Pulp and Paper Industry: Utilized in wood cooking, delignification of pulp, paper bleaching processes, and the de-inking process during waste paper recycling.
Water Treatment & Neutralization: Effectively applied in wastewater treatment plants to neutralize acidic effluents, adjust pH levels, and precipitate heavy metals.
Key Advantages
High Mercerization Efficiency: Ensures deep penetration into the structure of cotton fibers, significantly improving their sorbent properties and dye uptake.
Stable Ready-to-Use Solution: The liquid form eliminates the hazard and labor of dissolving solid caustic soda, preventing sudden system overheating and ensuring highly precise dosing.
Excellent Scouring Power: Rapidly and effectively breaks down organic contaminants, fats, waxes, and pectin substances found on processed fabrics.
Industrial Versatility: Beyond textile processing, it is successfully used in chemical synthesis, petroleum refining, metallurgy, and the food industry (as an acidity regulator).
Storage & Transportation
- Store in closed, well-ventilated warehouses in original, tightly sealed packaging made of alkali-resistant materials (plastic, specialized steel), away from heat sources and acids.
- Important: The recommended storage temperature should not fall below +15°C to prevent crystallization (freezing) of the solution. If frozen, the product retains its properties but requires careful, indirect heating before use.
- Avoid direct sunlight and contact with amphoteric metals like aluminum, zinc, and tin to prevent dangerous hydrogen gas evolution.
- Transportation is permitted by all covered transport modes in strict compliance with dangerous goods regulations (Class 8 hazard, corrosive substances).
- Guaranteed shelf life — 1 year from the date of manufacture.
Technical Specifications
Appearance
Clear, colorless or slightly colored liquid. Slight precipitation is permissible.
Molecular Weight
40.00 g/mol
Assay
48.0%-50.0%
Density (at 20°C)
1.50 – 1.53 g/cm³
pH (1% aqueous solution)
≥ 13.0
Crystallization Point
+12°C
Supply info
- Industrial Intermediate Bulk Containers (IBC totes) containing 1500 kg.
- Heavy-duty polyethylene drums of 250–300 kg.
- Bulk delivery via road tankers and rail tank cars is available for large wholesale orders.