Aluminum Sulfate Octadecahydrate Price & Suppliers in India

Aluminum Sulfate Octadecahydrate, commonly known as alum or non-ferric alum in the Indian market, is a highly soluble inorganic salt. It appears as white crystals, granules, or powder and is highly soluble in water. It functions primarily as a powerful coagulant, neutralizing the negative charges on suspended colloidal particles to form heavy flocs that easily settle out of solution, making it indispensable for liquid-solid separation processes.

In India, this chemical is a cornerstone of both municipal water treatment plants and industrial effluent treatment systems (ETPs). The domestic paper and pulp industry consumes significant volumes of non-ferric alum for rosin sizing, which enhances the water resistance and printability of paper. Additionally, the Indian textile sector utilizes it as a dye mordant to improve colorfastness, while the construction industry employs it as an accelerator and waterproofing additive in concrete mixes.

When sourcing Aluminum Sulfate in India, buyers must specify whether they require Non-Ferric (iron-free, typically <0.01% Fe) or Ferric grade, as the presence of iron can discolor paper and textiles. Key quality parameters to verify include alumina (Al2O3) content and insoluble matter. It is highly acidic in solution and mildly corrosive, so procurement managers should ensure suppliers provide UV-stabilized, moisture-proof HDPE packaging to prevent caking and degradation during monsoon storage.