Overview
Rochelle Salt Complexing Agent, also known as potassium sodium tartrate, is a versatile chemical widely used in various industrial processes. It is particularly valued for its chelating properties, which make it effective in binding metal ions. This compound is derived from tartaric acid and is commonly found in both industrial and food-grade applications. Its non-toxic nature and biodegradability make it a preferred choice in environmentally sensitive applications. The compound has been in use for centuries, originally discovered in the 17th century by Pierre Seignette, hence its alternative name, Seignette salt.
Physical and Chemical Properties
Rochelle Salt Complexing Agent is a white crystalline powder with a molecular weight of 210.16 g/mol. It has a density of 1.79 g/cm³ and melts at 70-80°C, decomposing at higher temperatures. The compound is highly soluble in water, which enhances its utility in aqueous solutions. Its chelating ability is its most notable chemical property, enabling it to form stable complexes with metal ions. This property is particularly useful in electroplating and other metal treatment processes. The compound is also known for its piezoelectric properties, although this is less relevant in industrial applications.
Main Applications
The primary use of Rochelle Salt Complexing Agent is in the electroplating industry, where it serves as a chelating agent to stabilize metal ions in solution. This ensures even deposition of metals during the plating process. It is also used as a food additive, particularly in baking powders and as an emulsifier. In the pharmaceutical industry, it is employed as a laxative and in the preparation of effervescent tablets. Its non-toxic nature makes it suitable for these applications. Additionally, it finds use in analytical chemistry as a component of Fehling's solution for sugar detection.
Safety and Storage
While Rochelle Salt Complexing Agent is generally considered safe, proper handling procedures should still be followed. Avoid inhalation of dust and direct contact with eyes or skin. In case of contact, rinse immediately with plenty of water. Storage should be in a cool, dry place, away from moisture to prevent caking or degradation. The compound is stable under normal conditions but should be kept away from strong oxidizing agents to prevent hazardous reactions.
B2B Procurement Guide
When procuring Rochelle Salt Complexing Agent, it is essential to verify the purity levels, typically ranging from 99% to 99.9% for industrial-grade applications. Food-grade and pharmaceutical-grade variants have stricter purity requirements. Suppliers should provide certifications such as ISO or USP to ensure quality. Prices vary based on purity and quantity, with bulk purchases generally offering cost savings. Always check the supplier's reputation and delivery capabilities to ensure consistent supply.
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