U.S. imports of Polyphosphates, N.E.S. (SITC 52365) totaled $11.0M in August 2026, imported from 20 countries.
Importers of Polyphosphates, N.E.S. paid $1.3M in duties in August 2026, an average duty rate of 12.01% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Polyphosphates, N.E.S. imports of $11.0M in August 2026 ran 17% above the year-to-date monthly average of $9.3M.
Last updated: August 2026 dataPolyphosphates not elsewhere specified under SITC 52365 cover condensed phosphate chains — such as hexametaphosphate, tetraphosphate, and longer-chain polyphosphates — that are not captured by the sodium tripolyphosphate heading. Sodium hexametaphosphate (SHMP) is the most commercially significant compound in this residual group, used as a sequestrant in water treatment, a dispersant in drilling fluids, and a food-grade additive in dairy and beverage processing. As with other condensed phosphates, food-contact grades may attract FDA scrutiny, and importers should document the degree of polymerization and intended application.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
220 import shipments a month
Sodium tripolyphosphate (STPP) is a specific trimer with a defined chain length and has its own SITC heading (52364). Sodium hexametaphosphate and other longer-chain or cyclic polyphosphates fall into the NES residual heading (52365). The degree of polymerization — confirmed by a certificate of analysis — is the key document for supporting the correct classification.
Water treatment and municipal utilities use polyphosphates for corrosion inhibition and scale control in distribution systems. Oil and gas drilling operations use them as dispersants in drilling muds. Food and beverage manufacturers use food-grade polyphosphates as sequestrants and emulsifying salts in processed cheese, dairy, and canned seafood. Each end-use sector may have different purity and regulatory requirements.
Basic heading 248 of 465 in section 5
Basic heading 52365 · $11.0M of $27.5B
Trade Directory
List your company and tag the 6-digit products you trade, so the companies trading them can find you. Be the first supplier listed.
Imports · August 2026
origin
Germany and Canada together supply 51% of it. China pays 41.2% duty; Canada 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$11.0MYoY · free account
Exports
$10.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $104.5M of Polyphosphates, N.E.S. and exported $112.1M.
Through August 2026. Source: U.S. Census Bureau.