Understanding Caustic Soda (NaOH): Grades, Applications & Export Standards
What is Caustic Soda?
Caustic Soda, chemically known as Sodium Hydroxide (NaOH), is a strong inorganic alkali used across a wide spectrum of industries. India is one of the leading exporters of caustic soda globally, serving markets in the GCC, Southeast Asia, Africa and Europe.
Grades Available
Technical Grade (99%+): Used in textile processing, paper manufacturing, soap making and chemical synthesis. This is the most commonly exported grade from Indian manufacturers.
Food Grade (E524): Complies with food safety standards and is used in food processing — particularly for curing olives, pretzels and as a pH regulator in beverages.
Membrane Cell Grade: Highest purity produced via membrane cell electrolysis technology. Used in pharmaceutical manufacturing and sensitive chemical processes.
Key Applications
- Textile & Fabric Processing: Mercerisation of cotton
- Paper & Pulp: Kraft pulping process
- Soap & Detergent Manufacturing: Saponification
- Water Treatment: pH adjustment and coagulation
- Aluminium Industry: Bayer process for alumina extraction
Export Documentation Required
When exporting caustic soda, buyers typically require: Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), Packing List, and SGS/BV pre-shipment inspection report. Trident Chemicals provides all documentation as standard.
