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Fast Black Base E Salt from Japan

Fast Black Base E Salt is a double diazo fast color salt producing deep black shades for wool and silk dyeing with excellent wet fastness. Used in high-end textile applications requiring durability. HTS 2927.00.30.00 classification for fast color salts.

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

Provide fastness test results (ISO standards) proving 'fast color' designation

Diazo salts require acidic packaging; document stabilizer composition

Avoid bulk mixtures; pure compounds stay in Chapter 29, preparations go to 3824