HS Code for Sodium hexametaphosphate
Sodium hexametaphosphate (SHMP) is classified under HS code 2835.39. This classification falls within Chapter 28 (Inorganic chemicals) and Heading 2835, which encompasses phosphinates, phosphonates, phosphates, and polyphosphates. SHMP is a hexamer of composition (NaPO3)6 and is technically a sodium polyphosphate. While Heading 2835 includes various phosphates, subheading 2835.31 is specifically reserved for sodium triphosphate (sodium tripolyphosphate). Consequently, other polyphosphates, including sodium hexametaphosphate, are categorized under the residual subheading 2835.39. The classification is based on the chemical structure of the substance as a condensed phosphate. SHMP is widely used in water treatment, detergents, and food processing as a sequestrant and emulsifier. To qualify for this code, the product must be a separate chemically defined compound, although technical grades containing small amounts of other phosphates formed during the manufacturing process are generally accepted under this heading according to the Explanatory Notes to Chapter 28.
Products Included
- Sodium hexametaphosphate (SHMP)
- Graham's salt
- Sodium polymetaphosphate
- Glassy sodium polyphosphate
- Food grade sodium hexametaphosphate
Common Misclassification
The most frequent misclassification occurs with sodium triphosphate (STPP), which belongs under HS code 2835.31. Importers often confuse these two because they are both sodium polyphosphates used in similar industrial applications. Another error involves classifying SHMP under 3824.94 if it is part of a prepared water treatment mixture or under 3402.90 if it is formulated as a finished detergent. If the SHMP is blended with other active ingredients, it loses its status as a pure chemical under Chapter 28 and must be moved to the appropriate functional chapter.
FAQ
What is the HS code for sodium hexametaphosphate?
The HS code for sodium hexametaphosphate is 2835.39, covering other polyphosphates.
Does the food-grade status change the HS code for SHMP?
No, both industrial and food-grade sodium hexametaphosphate are classified under 2835.39, provided they are not mixed with other substances.
Industry
Frequently Asked Questions
What is the HS code for Sodium hexametaphosphate?
The HS code for Sodium hexametaphosphate is 283539 (Polyphosphates; other than sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined).
How do I classify Sodium hexametaphosphate for customs?
Sodium hexametaphosphate is classified under HS code 283539 — Polyphosphates; other than sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined. This is a 6-digit subheading level code.
Is the HS code for Sodium hexametaphosphate the same in all countries?
The base HS code 283539 for Sodium hexametaphosphate is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.