Caustic Soda for Textile and Dyeing
Cotton and linen fabrics treated with concentrated caustic soda solution gain improved fibre performance. Caustic soda is used as a desizing agent a scouring agent a mercerising agent and a solvent for vat dyes, and it is one of the raw materials for viscose fibres such as artificial cotton artificial wool and rayon.
Industry Pain Points
What Goes Wrong With The Wrong Supplier
- Iron in the alkali can leave staining that is only visible after dyeing
- Uneven alkali strength gives uneven mercerising and patchy shade
- Wax oil and starch removal is incomplete when the scour is under strength
- High volume mills need bulk handling rather than hundreds of small bags
Customer Requirements
What This Industry Actually Needs
- Iron held at 0.005% maximum as Fe2O3
- Chlorides held at 0.03% maximum
- Consistent 99% NaOH so bath strength is repeatable
- Jumbo bags for mills consuming several tonnes a day
Suitable Products
Grades That Fit This Application
NaOH 99% MinCaustic Soda Flakes 99%
Thin white sodium hydroxide flakes at 99% minimum purity in 25 kg bags or jumbo bags with custom labels
View Specifications
NaOH 99% MinCaustic Soda Solid 99%
Solid sodium hydroxide at 99% minimum purity produced on the same line and to the same GB 209-2006 standard
View SpecificationsTypical Application Scenarios
Where The Alkali Does The Work
Mercerising
Concentrated caustic soda solution treatment that improves fibre performance lustre and dye uptake.
Scouring and Desizing
Removing wax oil starch and other substances covering the cotton fabric so dyeing is more uniform.
Viscose Fibre
Caustic soda with cellulose pulp and carbon disulphide is made into viscose liquid which is then spun and coagulated.
Delivery Capability
What We Can Commit To
- Flake grade with the tightest iron and chloride limits in our range
- 25 kg bags or jumbo bags to match mill handling
- Customised packaging and printed labels accepted
- Production to GB 209-2006 on every batch
- Third party inspection at loading on request
Related Knowledge
Reading That Helps You Specify
Comparison GuideCaustic Soda Pearls vs Flakes
Which physical form dissolves faster dusts less and suits your dosing equipment
Read The Guide
Material GuideCaustic Soda Grades and Specifications
How to read a caustic soda specification sheet and what each impurity limit controls
Read The Guide
Design GuideCaustic Soda Packaging and Storage
Bag construction pallet patterns warehouse conditions and shelf life in humid climates
Read The GuideOther Industries
More Applications We Supply
Pulp and Paper
Delignification pulping and bleaching lines that consume caustic soda every day
See The Application
Water Treatment
pH correction alkalinity control and heavy metal precipitation in municipal and industrial plants
See The Application
Soap and Detergent
Saponification and neutralisation for bar soap liquid detergent and cleaning chemistry
See The ApplicationFAQ
Textile and Dyeing Questions
Answers to the questions buyers ask us most often before placing a first order
Iron can appear as staining or as shade variation that is only visible after dyeing. Our flake grade holds iron as Fe2O3 at 0.005% maximum.
Yes. Flakes are packed in 25 kg bags or jumbo bags. Tell us what your handling equipment takes.
Mercerising uses a concentrated solution, and the exact strength depends on the fabric and the machine. We supply the solid at 99% and your process defines the bath. Our dilution and dosing guide covers safe make up.
Caustic Soda Built Around Your Textile and Dyeing Process
Tell us the process step the monthly volume and the destination port and we will come back with the grade the pack and the lead time.