Sodium thiosulfate, identified by its CAS number 7772-98-7, is a compound of significant chemical interest due to its multifaceted properties. NINGBO INNO PHARMCHEM CO.,LTD. supplies this essential chemical, understanding its critical roles across various sectors. Its primary characteristic is its function as a reducing agent, meaning it can donate electrons in a chemical reaction. This property is fundamental to many of its applications, including its well-known use in photography and its vital role in industrial processes.

The compound exists in two main forms: anhydrous sodium thiosulfate (Na₂S₂O₃) and sodium thiosulfate pentahydrate (Na₂S₂O₃·5H₂O). The pentahydrate form is the more common crystalline solid. Its solubility in water is quite high, and it is generally stable under normal conditions. However, when heated, it can decompose, releasing sulfur dioxide. The exploration of sodium thiosulfate chemical properties reveals its utility in complex chemical reactions.

One of the most impactful applications is in water purification. As a sodium thiosulfate for water treatment, it effectively neutralizes chlorine, which is widely used as a disinfectant in potable water and wastewater. The reaction is straightforward: Na₂S₂O₃ + 4Cl₂ + 5H₂O → Na₂SO₄ + H₂SO₄ + 8HCl. This reaction removes the oxidative power of chlorine, preventing it from damaging aquatic life or interfering with industrial processes. The efficacy of sodium thiosulfate in water purification makes it a staple in environmental management.

The sodium thiosulfate reducing agent capability is also harnessed in the textile industry. It's used as an antichlor to remove any residual chlorine from fabrics after bleaching, ensuring the integrity and colorfastness of the textiles. This application is critical for producing high-quality fabrics. Similarly, in the paper industry, it helps in the bleaching process by controlling residual chlorine.

In the field of analytical chemistry, sodium thiosulfate is a key reagent in iodometric titrations. It's used to standardize solutions of iodine and to determine the concentration of oxidizing agents. This precise application underscores the importance of reagent-grade sodium thiosulfate for accurate scientific measurements. The demand for sodium thiosulfate reagent is steady in research and quality control laboratories.

For businesses looking to purchase sodium thiosulfate, NINGBO INNO PHARMCHEM CO.,LTD. offers reliable sourcing and consistent quality. We understand that the performance of your processes depends on the purity and consistency of the chemicals you use. Therefore, we ensure that our sodium thiosulfate meets high standards, whether for industrial bulk orders or specialized laboratory needs.