Pyrogallic Acid (Pyrogallol) Powder
Pyrogallic acid, also known as pyrogallol, is a trihydroxybenzene (1,2,3-trihydroxybenzene) classified under HTS 2907.29.10.00 as a specific polyphenol. It appears as white to yellowish crystalline powder, often with added stabilizers for preservation during transport. This chemically defined organic compound is used in analytical chemistry and as a photographic developing agent.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold as general polyphenol mixture without pyrogallol purity specification
Other polyphenols fall under the residual subheading 2907.29.25, but pure pyrogallol is specifically named first.
If diluted in solvent beyond transport safety limits or for specific lab use
Solutions exceeding Chapter 29 note (e) limits for solvents shift to diagnostic reagents.
If formulated as synthetic coloring matter rather than pure chemical
Chapter exclusions send coloring preparations to Chapter 32 headings.
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Import Tips & Compliance
• Verify purity certificate (typically 98%+ min) and include Material Safety Data Sheet (MSDS) as pyrogallol is hazardous
• Ensure packaging complies with UN regulations for toxic solids; label as 'Pyrogallol' per DOT/IATA
• Avoid misclassification as general polyphenols (2907.29.25); provide chemical analysis confirming trihydroxybenzene structure
Related Products under HTS 2907.29.10.00
Pyrogallol Technical Grade Crystals
Technical grade pyrogallic acid crystals (C6H3(OH)3) are chemically defined polyphenols under HTS 2907.29.10.00. These are supplied as free-flowing crystals with anticaking agents for safe transport, meeting Chapter 29 note (f). Primarily used in oxygen absorption indicators and hair dye intermediates.
Pyrogallol 99%+ ACS Reagent Grade
ACS reagent grade pyrogallic acid (99%+ purity) is a high-purity polyphenol specifically enumerated in HTS 2907.29.10.00. Supplied as fine powder meeting American Chemical Society standards for laboratory use. Essential for redox titrations and as a standard in phenolic compound analysis.
Stabilized Pyrogallol for Photographic Use
Pyrogallol stabilized with sodium carbonate for photographic developing applications falls under HTS 2907.29.10.00 as a chemically defined polyphenol with permitted stabilizer (Chapter note f). Packaged in airtight containers to prevent oxidation during import.
Pyrogallic Acid Flakes Industrial Grade
Industrial grade pyrogallic acid in flake form (90-95% purity) is classified as pyrogallol under HTS 2907.29.10.00. These larger flakes reduce dusting during handling, with anti-dusting agents permitted by Chapter note (g). Used in synthetic rubber antioxidant production.
Pyrogallol with Emetic Additive Safety Grade
Safety-grade pyrogallol with added emetic for identification purposes (Chapter 29 note g) remains classified under HTS 2907.29.10.00. The emetic prevents accidental ingestion while maintaining chemical identity as trihydroxybenzene.