Pharmaceutical-Grade tert-Butylhydroquinone
Pharmaceutical-grade TBHQ is a USP-compliant polyphenolic antioxidant used in drug formulations to protect active ingredients from oxidation, particularly in topical creams and injectables. It matches HTS 2907.29.25.00 as a specifically named polyphenol; phenol-alcohol derivative. High purity ensures stability in sensitive medicinal products.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If part of immunological product formulations
Immunological products consistent of organic compounds are excluded from Chapter 29 per chapter note and classify under 3002.
If prepared as diagnostic or lab reagent mixture
Prepared chemical mixtures for lab or diagnostic use fall under 3824 exclusions rather than pure Chapter 29 compounds.
If other butylated hydroquinones not tert-butyl specific
Phenolic antioxidants with different alkyl substitutions use the general 'other' subheading within polyphenols.
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Import Tips & Compliance
• Submit Drug Master File or equivalent with import entry; ensure EP/USP certificate and GMP sourcing; declare separately from finished drugs to avoid Chapter 30 classification
Related Products under HTS 2907.29.25.00
tert-Butylhydroquinone (TBHQ) Antioxidant Powder
tert-Butylhydroquinone (TBHQ) is a synthetic phenolic antioxidant used primarily to preserve fats and oils in food products by inhibiting oxidation. As a polyphenolic compound with the specific chemical structure matching this HTS subheading, it falls under 2907.29.25.00 for import classification. It is typically supplied as a white to light tan crystalline powder.
Food-Grade TBHQ (tert-Butylhydroquinone) Crystals
Food-grade TBHQ crystals are a highly purified form of tert-Butylhydroquinone approved by FDA for use as an antioxidant in edible oils, shortenings, and baked goods at levels up to 0.02%. This polyphenolic compound is specifically enumerated under HTS 2907.29.25.00 due to its chemical structure as a tert-butyl substituted hydroquinone. It prevents rancidity and extends shelf life in lipid-containing foods.
Industrial TBHQ (tert-Butylhydroquinone) Flakes
Industrial-grade TBHQ flakes serve as an antioxidant stabilizer for petroleum products, rubber, and plastics, preventing oxidative degradation during storage and processing. Classified under HTS 2907.29.25.00 as it is a distinct polyphenolic compound fitting the phenol-alcohols category in Chapter 29. These flakes dissolve readily in organic solvents for easy incorporation.
Cosmetic TBHQ Antioxidant Pellets
TBHQ pellets formulated for cosmetics act as a lipid peroxidation inhibitor in creams, lotions, and lip products, maintaining product integrity against atmospheric oxygen. As pure tert-Butylhydroquinone, it is classified under HTS 2907.29.25.00 per Chapter 29 for separate chemically defined polyphenols. Pelleted form aids precise metering in formulations.