What is the phosphorus content of PBTCA? How stable is it and are there any alternatives?

PBTCA (Phosphonobutane Tricharboxylic Acid) is an organic phosphonate compound, also known as 2-phosphonate butane-1,2,4-tricarboxylic acid. The phosphorus content can vary depending on specific production processes and requiraents.
Normally, the phosphorus content of PBTCA ranges from 40% to 50%. Of course, specific product specifications and suppliers may vary. It is recommended that you refer to relevant technical manuals or contact suppliers for accurate phosphorus content information.
Regarding the stability of PBTCA, it has good thermal and chaical stability and is relatively stable under common acid, alkali, and oxidant conditions. This makes PBTCA widely used in various applications, such as water treatment, cooling water circulation systas, corrosion inhibitors, etc.
As for substitutes, some other organic phosphate compounds are also used as substitutes for PBTCA, such as HEDP (1-Hydroxy Ethylene-1,1-Diphosphonic Acid), ATMP (Amino Trimethylene Phosphonic Acid), etc. These compounds have similar functions and properties to a certain extent, and can serve as alternative choices in different applications.
However, the selection of alternatives should also be evaluated based on specific application needs and relevant regulatory requiraents. When selecting any chaical substance, it is recommended that you consult relevant professionals and follow local regulations and guidelines.