Potassium Tripolyphosphate
Potassium tripolyphosphate serves as a food additive for moisture retention in seafood processing and as a sequestrant in industrial applications. Classified in HTS 2835.39.5000 as an 'other' polyphosphate, it meets Chapter 28 criteria for inorganic polyphosphate salts.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for potassium phosphates that are not polyphosphates
Monopotassium or dipotassium phosphates without polymeric chains are classified under simple phosphate subheadings.
If blended into fertilizer formulations
Polyphosphates incorporated into NPK fertilizers fall under Chapter 31 as fertilizer mixtures.
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Import Tips & Compliance
• Obtain FDA prior approval for food-grade imports and provide certificates of analysis showing compliance with 21 CFR 173.310
• Label shipments clearly as 'food additive' to prevent reclassification during customs exam
• Watch for moisture content that could affect stability declarations
Related Products under HTS 2835.39.50.00
Sodium Tripolyphosphate (STPP)
Sodium tripolyphosphate is a polyphosphate salt used primarily as a builder in detergents and cleaning products to soften water and enhance cleaning efficiency. It falls under HTS 2835.39.5000 as it is a polyphosphate compound, chemically defined, not specifically enumerated elsewhere in the heading.
Sodium Hexametaphosphate (SHMP)
Sodium hexametaphosphate, a cyclic polyphosphate, functions as a water softener, dispersant in ceramics, and sequestrant in food processing. It qualifies for HTS 2835.39.5000 as an 'other' polyphosphate meeting chemical definition criteria.
Calcium Polyphosphate
Calcium polyphosphate serves as a dietary supplement for bone health and in dental applications for remineralization. It is an 'other' polyphosphate under HTS 2835.39.5000, chemically defined per Chapter 28.
Potassium Polyphosphate
Potassium polyphosphate finds use in meat processing for water binding and in fire retardant formulations. It is imported under HTS 2835.39.5000 as other polyphosphates.
Tetrasodium Pyrophosphate
Tetrasodium pyrophosphate is a polyphosphate used in toothpaste as a tartar control agent and in water treatment for corrosion inhibition. It is categorized under HTS 2835.39.5000 for polyphosphates other than sodium tripolyphosphate.
Ammonium Polyphosphate
Ammonium polyphosphate is used as a flame retardant in plastics, textiles, and intumescent coatings due to its phosphorus content. Classified under HTS 2835.39.5000 as it represents polyphosphates of ammonium per Chapter 28 notes.