Naphthalic Anhydride 98% Pure
Naphthalic anhydride is a white to pale yellow crystalline powder used primarily as an intermediate in the synthesis of dyes, pigments, and fluorescent brighteners. This specific grade at 98% purity falls under HTS 2917.39.0800 as it is the pure aromatic polycarboxylic anhydride derived from naphthalene-1,8-dicarboxylic acid. It meets Chapter 29 requirements for separate chemically defined organic compounds without disqualifying additions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing more than 0.5% but not over 45% by weight of acetic acid
Products described as naphthalic anhydride but diluted with acetic acid for processing fall under this statistical suffix rather than pure form.
If pre-reacted into synthetic fluorescent brightening agents
Once converted into finished fluorescent whitening agents, classification shifts from Chapter 29 chemical intermediate to Chapter 32 coloring matter.
If imported as mixture with solvents for safety/transport
Solutions exceeding Chapter 29 note (e) limits or rendered suitable for specific use classify as chemical preparations in Chapter 38.
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Import Tips & Compliance
• Provide Certificate of Analysis (CoA) confirming 98% purity and chemical identity to avoid misclassification as mixtures under Chapter 38
• Ensure packaging complies with UN recommendations for solid organic chemicals; include proper SDS for hazardous material declarations
• Verify no added solvents or stabilizers beyond transport necessities, as per Chapter 29 note (e)
Related Products under HTS 2917.39.08.00
Industrial Grade Naphthalic Anhydride Flakes
Naphthalic anhydride in flake form for bulk industrial use in pigment manufacturing and polymer modification. Classified under HTS 2917.39.0800 as the pure aromatic anhydride without disqualifying impurities or additions. The flaked physical form facilitates handling but does not affect chemical classification under Chapter 29.
High Purity Naphthalic Anhydride for Dye Synthesis
Ultra-high purity naphthalic anhydride (>99%) specifically packaged for use in perylene dye manufacturing. Falls squarely under HTS 2917.39.0800 as a separate chemically defined aromatic polycarboxylic anhydride per Chapter 29 note (a). No added substances render it suitable for specific use beyond its chemical identity.
Naphthalic Anhydride Technical Grade Powder
Technical grade naphthalic anhydride powder (95-98% purity) with minimal impurities for general chemical synthesis. Classified in HTS 2917.39.0800 as it remains a separate chemically defined compound under Chapter 29, not a mixture requiring Chapter 38 classification. Standard anti-caking agent permitted per note (f).
Reagent Grade Naphthalic Anhydride ACS
ACS reagent grade naphthalic anhydride meeting American Chemical Society specifications for laboratory use. HTS 2917.39.0800 applies as pure aromatic polycarboxylic anhydride, even for lab quantities, since Chapter 29 covers all purity levels of chemically defined compounds. Lab packaging does not trigger retail exclusions.