Stabilized Rochelle Salt with Anti-Caking Agent
Potassium sodium tartrate with food-grade anti-caking stabilizer added for preservation during transport. Qualifies under HTS 2918.13.3000 and Chapter 29 note (f) as the defined compound with stabilizer necessary for transport. Maintains free-flowing properties in humid conditions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stabilizer addition renders suitable for specific use
Chapter 29 note (g) excludes products where additions create specific use suitability.
If other alkali metal tartrates
Different cation combinations classified under subsequent sodium/potassium salt headings.
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Import Tips & Compliance
• Document anti-caking agent composition (<2% by weight) and confirm it doesn't create specific use suitability
• Specify stabilizer as silicon dioxide or tricalcium phosphate in SDS for customs review
• Test for free-flowability post-shipment; failed lots reclassified as preparations
Related Products under HTS 2918.13.30.00
Potassium Sodium Tartrate Crystals (Rochelle Salt)
Pure potassium sodium tartrate, also known as Rochelle salt, is a double salt of tartaric acid with potassium and sodium. It falls under HTS 2918.13.3000 as a salt of tartaric acid with alcohol function but without other oxygen functions, meeting Chapter 29 requirements for chemically defined organic compounds. Commonly supplied as white crystalline powder for laboratory and industrial applications.
Rochelle Salt for Piezoelectric Crystals
Specialty potassium sodium tartrate grown into large single crystals for piezoelectric applications in early microphones and transducers. Falls precisely under HTS 2918.13.3000 as the named Rochelle salt, a tartaric acid salt with defined chemical structure per Chapter 29.
Technical Grade Rochelle Salt Powder
Industrial-grade potassium sodium tartrate (min 98% purity) for electroplating baths and metal cleaning applications. HTS 2918.13.3000 specifically names this compound as a tartaric acid salt, qualifying under Chapter 29 for separate chemically defined organic compounds.
Rochelle Salt for Silvering Mirrors
High-purity potassium sodium tartrate used in traditional mirror silvering solutions as reducing agent. Specifically named under HTS 2918.13.3000 as Rochelle salts, the double tartrate essential for depositing silver films. Supplied in moisture-proof containers.
Bulk Rochelle Salt Dihydrate USP
Pharmaceutical bulk potassium sodium tartrate tetrahydrate (dihydrate formula KNaC4H4O6·4H2O) meeting USP monograph. Classifies under HTS 2918.13.3000 as the specifically named Rochelle salt of tartaric acid. Used in bulk for tablet compression and syrup formulation.
Rochelle Salt Pharmaceutical Grade
High-purity potassium sodium tartrate meeting USP standards for use in pharmaceutical formulations and as a sequestrant. Classified under HTS 2918.13.3000 as the specific salt of tartaric acid per the tariff description. Its dihydrate crystal structure provides mild laxative and buffering properties in medicinal products.