Overview
Sodium phosphate tribasic (Na₃PO₄), commonly known as trisodium phosphate (TSP), is an inorganic compound with strong alkaline properties. It is widely utilized in industrial and commercial applications due to its effectiveness as a cleaning agent, water softener, and food additive. The compound is typically produced from phosphoric acid and sodium hydroxide, and its recycled form is gaining attention for sustainability efforts. In industrial settings, TSP is valued for its ability to remove grease, oil, and other contaminants from surfaces. Its high solubility in water makes it suitable for various formulations, including detergents and degreasers. The recycled variant, often sourced from industrial byproducts, offers an eco-friendly alternative without compromising performance.
Physical and Chemical Properties
Sodium phosphate tribasic appears as a white crystalline powder with a density of 1.62 g/cm³. It has a high melting point of 1,583 °C, making it stable under most industrial conditions. The compound is highly soluble in water, forming an alkaline solution with a pH of around 12. This alkalinity contributes to its effectiveness in breaking down organic materials and neutralizing acids. Key chemical properties include its role as a chelating agent, which allows it to bind with metal ions and prevent scale formation in water systems. Its strong cleaning action is attributed to its ability to emulsify oils and suspend dirt particles. These properties make it a versatile component in formulations requiring heavy-duty cleaning or water treatment.
Main Applications
Trisodium phosphate is extensively used in industrial cleaning applications, particularly for degreasing metal surfaces and equipment. It is a key ingredient in heavy-duty detergents and sanitizers, often employed in food processing plants and manufacturing facilities. In water treatment, TSP serves as a corrosion inhibitor and scale preventer, especially in boilers and cooling systems. The food industry utilizes TSP as an acidity regulator and emulsifier in processed foods, though its use is regulated to ensure safety. Additionally, it is employed in metal pretreatment processes to prepare surfaces for painting or coating. The recycled form of TSP is increasingly adopted in eco-conscious industries, aligning with circular economy principles.
Safety and Storage
Due to its corrosive nature, sodium phosphate tribasic requires careful handling. Personal protective equipment (PPE), including gloves and goggles, is essential to prevent skin and eye contact. Inhalation of dust should be avoided, and adequate ventilation is recommended in workspaces where TSP is used or stored. Storage conditions should prioritize dryness and coolness to prevent caking or degradation. The compound should be kept in tightly sealed containers away from moisture and incompatible substances like acids. Spills should be neutralized with weak acids (e.g., vinegar) and cleaned promptly to avoid slippery surfaces or chemical reactions.
B2B Procurement Guide
When procuring sodium phosphate tribasic, B2B buyers should prioritize suppliers that provide detailed specifications, including purity levels (e.g., technical grade vs. food grade). Recycled TSP should be verified for consistency and contamination risks. Pricing varies based on quantity, source, and market demand, with bulk purchases typically offering cost advantages. Consider logistical factors such as packaging (bags, drums, or bulk shipments) and supplier certifications (ISO, REACH compliance). For international procurement, ensure adherence to regional regulations, particularly for food-grade applications. Establishing long-term contracts with reliable suppliers can mitigate price volatility and ensure consistent quality.
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