Description

Specifications Table

Product Name – Aluminium Sulphate Octadecahydrate
Quantity/Pack Size – 500 g
Form – Crystalline Powder
Grade – Extra Pure (98%)
Application – Chemical synthesis, water treatment simulations, analytical testing

Product Overview

Aluminium Sulphate Octadecahydrate 98% Extra Pure is a highly refined, water-soluble inorganic compound designed for laboratory applications requiring consistent purity and reliability. This crystalline powder adheres to strict quality standards, ensuring minimal impurities and precise composition for reproducible experimental results. Its stable hydrated form (Al₂(SO₄)₃·18H₂O) makes it suitable for reactions where controlled aluminium ion release is critical, such as coagulation studies, pH adjustment simulations, or precipitation tests. The extra pure grade (98%) guarantees low heavy metal content and negligible insoluble matter, reducing interference in sensitive analyses. Store in a cool, dry environment to prevent caking, as the compound is hygroscopic. Compatible with most glass and plastic labware, it dissolves rapidly in water without residual turbidity, providing a clear solution for titration or reagent preparation. For long-term storage, seal the container tightly to avoid moisture absorption, which may alter its physical properties without affecting chemical efficacy.

FAQs

1. What is the solubility of Aluminium Sulphate Octadecahydrate in water?

It is highly soluble in water, forming a clear solution at room temperature. Solubility increases with temperature, reaching approximately 87 g/100 mL at 100°C.

2. Can this grade be used for preparing standard solutions?

Yes, the 98% extra pure grade is suitable for preparing standard solutions due to its low impurity profile and consistent composition.

3. How does this differ from anhydrous Aluminium Sulphate?

The octadecahydrate form contains 18 water molecules per aluminium sulphate unit, making it more soluble and easier to dissolve compared to the anhydrous version.