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Monosodium 4-Aminoazobenzene-2,4-disulfonate from Japan

This is the monosodium salt of 4-aminoazobenzenedisulfonic acid, a chemically defined diazo compound with an azo (-N=N-) linkage and sulfonic acid groups. It falls under HTS 2927.00.03.00 as a specific azo-compound listed in the tariff schedule for separate chemically defined organic compounds. Primarily used as an intermediate in dye synthesis.

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 chemical analysis certificates confirming identity as 4-aminoazobenzenedisulfonic acid monosodium salt to match exact HTS specification

Ensure packaging complies with UN regulations for hazardous chemicals (likely irritant due to sulfonic groups); include MSDS documentation

Verify purity levels (>95%) as impurities may trigger reclassification under general azo-compound headings