Benzotriyl Diazo Naphthalenesulfonate
1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, 4-benzoyl-1,2,3-benzenetriyl ester, a complex diazo ester used in advanced photoinitiator formulations for 3D printing resins. Specifically named in HTS 2927.00.18.00 as a diazo compound of Chapter 29 organic chemicals.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported primarily as pigment lake or toning component
Diazo compounds functioning as synthetic organic coloring matter, even photoactive, often classify in Chapter 32 per exclusions in Chapter 29 notes.
If as formulated resin additive with stabilizers
Complex photoinitiator preparations containing these compounds with functional additives classify as chemical preparations not elsewhere specified.
If sulfonated derivative classification prevails over diazo
Chapter 29 notes specify sulfonated diazo compounds follow halogenated/sulfonated derivative rules, potentially shifting to earlier hydrocarbon derivative headings.
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Import Tips & Compliance
• ,High purity (>98%) required for this classification; lower grades may shift to mixtures in Chapter 38
Related Products under HTS 2927.00.18.00
Norbornane Diazo Ester
1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-,(octahydro-4,7-methano-1H-indene-2,5-diyl) bis-(methylene) ester, a diazo compound featuring norbornane structure used in specialty polymer crosslinking applications. This exact chemical is enumerated in HTS 2927.00.18.00 under diazo compounds of Chapter 29.
Kayacure DIA Photoinitiator
Commercial grade 1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo, ester with phenyl(2,3,4-trihydroxyphenyl)methanone known as Kayacure DIA, used in flexographic printing plates. HTS 2927.00.18.00 covers this exact chemical structure as specified diazo compound.
TDI Diazo Ester Intermediate
1-Naphthalenesulfonic acid, 3-diazo-3,4-dihydro-4-oxo-ar'-(1-methylethyl)[1,1'-biphenyl]-4-yl ester used as synthesis intermediate for advanced photoresists in semiconductor production. Enumerated specifically in HTS 2927.00.18.00 diazo compounds subheading.
Naphthol AS Photoinitiator
This is 1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo, ester with phenyl(2,3,4-trihydroxyphenyl)methanone, a diazo compound used as a photoinitiator in printing inks and UV-curable coatings. It falls under HTS 2927.00.18.00 as one of the specifically enumerated diazo compounds in the diazo-, azo- or azoxy-compounds heading of Chapter 29.
Diazo Biphenyl Photoinitiator
1-Naphthalenesulfonic acid, 3-diazo-3,4-dihydro-4-oxo-ar'-(1-methylethyl)[1,1'-biphenyl]-4-yl ester, a specific diazo compound used in photoresist formulations for electronics manufacturing. Classified under HTS 2927.00.18.00 as an explicitly named diazo compound meeting Chapter 29 organic compound criteria.