Gamma Acid (1,8-Dihydroxynaphthalene-3,6-disulfonic acid isomer) from Germany
Gamma Acid, a positional isomer of H Acid also classified as 1,8-Dihydroxynaphthalene-3,6-disulfonic acid per tariff specificity. Used interchangeably in reactive dye manufacturing under the same HTS 2908.99.0900 provision.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• NMR spectra documentation differentiates isomers if CBP questions specificity
• Store below 40°C to prevent decomposition; declare stability data