Aluminum dihydrogen tripolyphosphate

Aluminum dihydrogen tripolyphosphate (CAS 13939-25-8, EC 237-714-9) is an inorganic phosphate salt commercially available under trade names including K 100, K-Bond 80, K-White 2, K-Fresh 100P, and K-White. It carries no assigned E-code and is classified within the salts and minerals category.

In anticorrosive coatings, it functions as a pigment that releases phosphate ions in the presence of moisture, passivating metal substrates and suppressing anodic corrosion reactions. In water treatment formulations, it acts as a pH buffer and scale inhibitor, stabilizing system chemistry in industrial cooling and process water circuits.

This material is supplied to REACH-compliant standards for the European market and is handled under standard industrial chemical regulations. It is available in powder form and sourced in grades suited to coatings, adhesive, and water treatment applications. Procurement teams should confirm packaging format and grade specification directly with the supplier.