Sodium Perborate Tetrahydrate
Sodium perborate tetrahydrate (NaBO3·4H2O), often called 'gem clips' in industry, is an anhydrous white crystalline powder that releases hydrogen peroxide in water for bleaching applications. Classified under HTS 2840.30.0010 as a peroxoborate of sodium per Chapter 28 notes for inorganic oxygen compounds.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If solidified with urea as hydrogen peroxide-urea adduct
Urea-hydrogen peroxide falls under 2847 for hydrogen peroxide preparations, differentiated by stabilizing agent per Chapter 28 note 2(e).
If for other sodium borates lacking peroxy functionality
Non-peroxo borates like sodium metaborate are in 2830, as peroxoborates require the O-O bond structure specified in 2840.
If used as an oxidizing additive in fuel preparations
Antiknock preparations or oxidation catalysts containing perborates are classified in 3811 based on principal function.
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Import Tips & Compliance
• Provide lab test results confirming tetrahydrate form and minimum assay (typically 99%+) to prevent misclassification as lower-grade mixtures
• Use UN 3378 packaging for oxidizing substances; label clearly to comply with DOT/IMDG regulations
• Avoid common error of importing in consumer-ready detergent packs, which changes classification—import bulk for further processing
Related Products under HTS 2840.30.00.10
Sodium Perborate Monohydrate
Sodium perborate monohydrate (NaBO3·H2O) is a white, odorless powder used primarily as an oxidizing agent and bleaching agent in detergents and cleaning products. It falls under HTS 2840.30.0010 as it is a chemically defined peroxoborate (perborate) of sodium, explicitly classified in the borates subheading for peroxoborates.
Anhydrous Sodium Perborate
Anhydrous sodium perborate is the dehydrated form (NaBO3) used in high-performance bleaching formulations where water content must be minimized. It is specifically classified under HTS 2840.30.0010 as a peroxoborate (perborate), meeting the chemical definition for inorganic peroxy compounds in Chapter 28.
Technical Grade Sodium Perborate
Technical grade sodium perborate is a high-purity (95-99%) powder for industrial bleaching in paper and textile processing. It qualifies for HTS 2840.30.0010 as chemically defined sodium peroxoborate per Chapter 28 definitions, excluding organo-inorganic mixtures.