2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTC): A Robust Water Treatment Agent

Introduction:

2-Phosphonobutane-1,2,4-tricarboxylic acid, commonly referred to as PBTC, is a potent water treatment agent recognized for its high-scale inhibition and corrosion control capabilities. With the CAS number 37971-36-1, this compound plays a crucial role in various industrial applications, ensuring efficient water management.

Physical and Chemical Properties:

PBTC appears as a colorless or light yellow transparent liquid with a relative density of 1.25 at 20 degrees Celsius. It boasts excellent acid resistance, alkali resistance, and oxidant resistance. Completely miscible in water, it demonstrates good thermal stability and hydrolysis resistance, making it suitable for various water treatment conditions.

Utility:

As a corrosion and scale inhibitor, PBTC excels in water treatment with its robust performance, strong chemical stability, and low toxicity. It proves effective in high-temperature, high-hardness, and high-alkalinity conditions. Notably, PBTC exhibits remarkable corrosion inhibition even under challenging circumstances. It demonstrates an excellent complexation ability with calcium, magnesium, and other metal ions in water, showcasing its versatility.

Applications:

PBTC finds extensive use in water treatment across diverse industries, including petroleum, chemical, power generation, and industrial boiler water treatment. Its ability to increase the concentration ratio of circulating cooling water to over 7 makes it a preferred choice. In the detergent industry, PBTC serves as a valuable chelating agent and metal cleaning agent, contributing to its multifaceted utility.

Safety Measures:

An aqueous solution of PBTC at a concentration of 50% exhibits low toxicity, with an oral LD50 greater than 6500mg/kg in rats. While it may cause moderate irritation in mucosal irritation tests, proper protective measures for staff handling PBTC are recommended. Being a medium-strength acid, it possesses a certain degree of corrosion potential.

In conclusion, 2-Phosphonobutane-1,2,4-tricarboxylic acid stands as a robust water treatment solution, addressing scale inhibition, corrosion control, and complexation needs in various industrial settings. Its compatibility and synergistic effects make it a versatile and efficient choice for enhancing water quality and system performance.