sec-Butylbenzene
sec-Butylbenzene has a secondary butyl group on the benzene ring, serving as precursor for styrene derivatives. Classified in HTS 2902.90.30 as an alkylbenzene isomer meeting purity standards of Chapter 29. Its branched structure provides specific reactivity profiles.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If industrial grade with mixed butyl isomers
Pure single isomers preferred for 2902.90.30; blends go to residual.
If >20% styrene impurity
Styrene content triggers classification under dedicated styrene heading.
If from coal tar light oils
Aromatic hydrocarbons from coal carbonization remain Chapter 27.
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Import Tips & Compliance
• Provide chiral analysis if enantiomerically enriched for research applications
• UN 1942 classification; require grounding wires on metal containers
• Document distillation cuts separating from n-butylbenzene contaminants
Related Products under HTS 2902.90.30
Cumene (Isopropylbenzene)
Cumene is an alkylbenzene consisting of a benzene ring with an isopropyl group attached, used primarily as an intermediate in phenol and acetone production. It falls under HTS 2902.90.30 as a chemically defined cyclic hydrocarbon with an alkyl substituent. This classification applies to pure alkylbenzenes meeting chapter 29 criteria for separate organic compounds.
p-Cymene (4-Isopropyltoluene)
p-Cymene is a naturally occurring alkylbenzene with both methyl and isopropyl groups on the benzene ring, used in fragrance synthesis and polymer production. Classified under HTS 2902.90.30 as a polyalkylbenzene fitting chapter criteria for pure organic compounds. Its structure qualifies it specifically within this alkylbenzene subheading.
n-Butylbenzene
n-Butylbenzene features a straight-chain butyl group attached to benzene, serving as an intermediate for surfactants and plasticizers. It qualifies under HTS 2902.90.30 as a chemically defined alkylbenzene per Chapter 29 note (a). The pure compound status distinguishes it from mixtures.
Diisopropylbenzene
Diisopropylbenzene contains two isopropyl groups on the benzene ring, used in resin and specialty chemical manufacturing. As a polyalkylbenzene, it precisely matches HTS 2902.90.30 criteria for cyclic hydrocarbons with multiple alkyl substituents. Chapter notes confirm applicability to pure isomers.
1,4-Diethylbenzene
1,4-Diethylbenzene is a symmetric polyalkylbenzene used in high-performance polymer production like polyethylene naphthalate. It falls under HTS 2902.90.30 as a pure dialkyl-substituted cyclic hydrocarbon. The para configuration distinguishes its chemical properties for specific syntheses.
1,3,5-Trimethylbenzene (Mesitylene)
Mesitylene is a symmetrical trialkylbenzene used as solvent and pyrotechnic fuel. It qualifies under HTS 2902.90.30 as a polyalkylbenzene per the exact subheading description. High symmetry gives unique solvency properties.