Reactive Orange 131 (2,4-diamino-3-[4-(2-sulfoxyethylsulfonyl)-phenylazo] -5-[4-(2-sulfoxyethylsulfonyl)-2-sulfophenylazo]- benzenesulfonic acid, potassium sodium salt) (CAS No. 187026-95-5) (provided for in 3204.16.30)

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As of Revision 22 (2026), effective Oct 30, 2026Source: USITC HTS ↗

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