High-Purity Anhydrous Sodium Tetraborate from Japan
High-purity anhydrous Na2B4O7 for laboratory reagents and pharmaceutical intermediates. It is classified in HTS 2840.11.00.00 as refined anhydrous disodium tetraborate, a chemically defined borate per Chapter 28 notes. Devoid of crystal water, distinguishing it from pentahydrate forms.
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
• Obtain Certificate of Analysis (CoA) specifying anhydrous purity >99% for customs validation
• Comply with REACH-like regulations if transshipping through EU; provide toxicity data
• Use proper NA/UN numbers for shipping as it may be regulated as an irritant