High-Purity Refined Borax for Metallurgy from Japan
High-purity refined disodium tetraborate used as flux in non-ferrous metal soldering and brazing. Under HTS 2840.19.00.00 as other refined borax, chemically defined per Chapter 28. Not a cermet or sintered carbide excluded by note 6(g).
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Certify low impurity for flux grade; invoice specifies metallurgy end-use
• Pitfall: Flux mixtures become 3810.10
• Comply with OSHA boron handling