Ammonium Persulfate Crystals
Ammonium persulfate ((NH4)2S2O8) appears as colorless crystals widely employed as a radical initiator in emulsion polymerization and etching solutions. Classified in HTS 2833.40.60.50 as an 'other' peroxosulfate, it qualifies as a chemically defined ammonium peroxysalt per heading 2826-2842 note. Excluded from organic products per Chapter 28 structure.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If double or complex salt with other metals
Chapter note mandates double/complex salts to 2842; pure ammonium persulfate remains in 2833 as simple peroxysalt.
If pre-formulated as catalyst for rubber/tire industry
Antioxidants, inhibitors, or stabilizers containing persulfates classify in 3811 when prepared for specific uses.
If regular ammonium sulfate without peroxide bond
Standard (NH4)2SO4 is disodium sulfate equivalent under 2833.25; peroxo version uniquely in 2833.40.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide chemical assay confirming >98% purity to distinguish from complex salts (2842); ammonium salts specifically noted for headings 2826-2842
• Declare as oxidizer Class 5.1 for proper hazmat shipping; ensure UN1490 proper shipping name on commercial invoice
Related Products under HTS 2833.40.60.50
Sodium Persulfate Powder
Sodium persulfate (Na2S2O8) is a white crystalline powder used as an oxidizing agent in chemical synthesis, polymer initiation, and bleaching processes. It falls under HTS 2833.40.60.50 as a peroxosulfate (persulfate) of sodium, classified as 'other' peroxosulfates not specified elsewhere in the subheading. This chemically defined inorganic compound meets Chapter 28 criteria for peroxosulfates.
Monopersulfate Triple Salt (Oxone)
2KHSO5·KHSO4·K2SO4, commercially known as Oxone, is a white powder used for oxidation in pool sanitation and organic synthesis. Despite containing regular sulfate, primary classification under HTS 2833.40.60.50 as potassium peroxosulfate (monopersulfate) 'other' due to dominant peroxoacid salt component. Chemically defined per Chapter 28 notes.
Persulfate Mixture for Polymerization
Technical grade blend of ammonium and sodium persulfates for initiating acrylic emulsion polymerization. Still classified HTS 2833.40.60.50 as 'other' peroxosulfates if chemically defined and predominant. Meets Chapter 28 purity standards when not prepared mixtures.
Barium Persulfate Fine Powder
BaS2O8 fine powder used in specialty oxidations and pyrotechnic compositions. Rare earth peroxosulfate classified under HTS 2833.40.60.50 'other' as metal peroxysalt per Chapter 28 headings 2826-2842 note. Chemically defined inorganic compound.
Potassium Persulfate Granules
Potassium persulfate (K2S2O8) in granular form serves as a bleaching agent in cosmetics, hair dyes, and textile processing. HTS 2833.40.60.50 covers this as 'other' peroxosulfate, being a metal peroxysalt chemically defined per Chapter 28. Distinguished from general sulfates by active oxygen content.
Sodium Peroxymonosulfate Powder
Na2SO5, sodium peroxymonosulfate, functions as a selective oxidant in wastewater treatment and bleaching. HTS 2833.40.60.50 includes this 'other' peroxosulfate as a chemically defined sodium salt with peroxo functionality. Differentiated from disulfates by single S2O8 structure.