Rongalite C Technical Grade from Japan
Technical-grade Rongalite C, a commercial form of sodium formaldehyde sulfoxylate, supplied as free-flowing white powder for industrial vat dyeing. Classified under HTS 2831.10.1000 as the specific sodium formaldehyde sulfoxylate, fitting Chapter 28's dithionites/sulfoxylates stabilized with organics. Essential for reducing vat dyes like indigo in denim production.
Duty Rate — Japan → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide commercial invoice specifying 'sodium formaldehyde sulfoxylate' exact nomenclature to match HTS description precisely
• Comply with TSCA pre-notice if new chemical concerns arise; pitfall is failing to declare reducing properties leading to safety scrutiny
• Confirm 98%+ purity via lab test; lower grades risk classification as mixtures under 3824