Pyrogallol from Gallic Acid
Pyrogallol (1,2,3-trihydroxybenzene) produced by decarboxylation of gallic acid, but imported as pure gallic acid precursor. Actually pure gallic acid for pyrogallol synthesis classifies HTS 2918.29.30.00. Chemical reduction product remains chapter 29 compound.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pure pyrogallol without carboxylic group
Decarboxylated product loses carboxylic function, becomes simple phenol of 2907.
If developer chemical preparation
Photographic chemicals in preparations shift from pure compounds.
If intermediate reduction product
Partial decarboxylation products may classify as other phenol acids.
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Import Tips & Compliance
• Declare decarboxylation yield efficiency; photographic grade requires low iron <5ppm; heat-stable up to 200°C processing
Related Products under HTS 2918.29.30.00
Gallic Acid USP Grade
Pharmaceutical-grade gallic acid meeting USP standards, a trihydroxybenzoic acid used in drug synthesis and as an antioxidant. Classified under HTS 2918.29.30.00 as gallic acid, a carboxylic acid with phenol function without other oxygen functions. It fits chapter 29 notes for separate chemically defined organic compounds.
3,4,5-Trihydroxybenzoic Acid Powder
Pure 3,4,5-trihydroxybenzoic acid in crystalline powder form, the chemical synonym for gallic acid used in laboratory research. Falls under HTS 2918.29.30.00 as specifically enumerated gallic acid with phenolic carboxylic structure. Meets chapter 29 requirements for chemically defined organic compounds.
Propyl Gallate EP Grade
European Pharmacopoeia grade propyl gallate, the propyl ester of gallic acid used as food preservative E310. Classifiable under HTS 2918.29.30.00 per chapter note 3(A) as ester of gallic acid follows parent compound heading. Chemically defined with phenol function carboxylic acid structure.
Gallic Acid Monohydrate Technical Grade
Technical grade gallic acid with one water molecule of crystallization, used in industrial antioxidant applications. HTS 2918.29.30.00 covers this hydrated form as the chemically defined compound gallic acid per chapter note (a). Phenol function carboxylic acid without other oxygen groups.
Synthite Gallic Acid 98% Powder
Synthite brand 98% pure gallic acid powder for ink and polymer applications, chemically 3,4,5-trihydroxybenzoic acid. Specifically classified HTS 2918.29.30.00 as gallic acid despite commercial purity <99%. Chapter 29 applies to impure organic compounds.
Octyl Gallate Food Grade Antioxidant
Food-grade octyl gallate (E311), n-octyl ester of gallic acid used to prevent rancidity in fats/oils. HTS 2918.29.30.00 per note 3(A) esters classified with parent gallic acid. Chemically defined phenolic carboxylic ester.