The STPP market taxonomy also distinguishes product types, each defined by purity level, particle size distribution, and physical form. Industrial‑grade STPP, typically ≥ 99 % purity and supplied as coarse granules, dominates the bulk segment, accounting for roughly 55 % of overall volume because it satisfies the cost‑sensitive requirements of detergents and water‑treatment chemicals. Food‑grade STPP, meeting stricter HACCP and FDA specifications (≥ 99.5 % purity, low heavy‑metal content), is offered in fine powder or micro‑granular forms and contributes about 30 % of sales, driven by its use in seafood preservation and bakery applications. Pharmaceutical‑grade STPP, the most refined variant (≥ 99.9 % purity, endotoxin‑free), is formulated as a sterile solution or micronized powder and represents the remaining 15 % of the market, primarily supporting oral‑care formulations and injectable excipients. Within each grade, coated granules—encapsulated with polymeric films to modulate dissolution—are gaining traction, especially in detergent pods, adding a niche but growing premium segment. The delineation of these types clarifies capacity allocation and pricing dynamics across the Sodium Tripolyphosphate (STPP) segmentation.