Phenyltrichlorosilane
Phenyltrichlorosilane (CAS 98-13-5) is the chemical (C6H5)SiCl3, explicitly named in HTS 2931.90.0500 as an aromatic organo-inorganic compound with silicon-carbon bonding. Used primarily for producing phenyl-functional silicones, silane coupling agents, and high-temperature silicone fluids.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If non-aromatic alkyl-substituted silane
Aliphatic organosilanes fall under 'other' subheading 2931.90.90 excluding specifically named aromatics.
If further processed into silane coupling agents for pigments
Finished fluorescent brighteners or pigment treatments shift to Chapter 32 synthetic coloring matter.
If diluted beyond transport/stabilizer allowances
Chapter 29 note (e) excludes solutions suitable for specific uses beyond safety/transport.
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Import Tips & Compliance
• Classify as UN 2437 corrosive liquid; ensure DOT/ADR-compliant drums with proper labeling
• Submit Certificate of Analysis confirming single compound status per Chapter 29 note (a)
• Avoid common pitfall of misdeclaring purity levels affecting duty-free chemical status
Related Products under HTS 2931.90.05.00
Diphenyldichlorosilane
Diphenyldichlorosilane (CAS 149-76-8) is an aromatic organosilicon compound with the formula (C6H5)2SiCl2, classified under HTS 2931.90.0500 as a specific organo-inorganic compound containing silicon directly linked to carbon atoms in aromatic rings. It serves as a key intermediate in silicone polymer synthesis and silane coupling agent production.
Diphenyldichlorosilane 98% Technical Grade
Technical grade diphenyldichlorosilane at 98% purity with minor impurities, remains classified under HTS 2931.90.0500 per Chapter 29 note (a) allowing impurities in chemically defined compounds. Used in industrial silicone rubber compounding and surface modification applications.
Phenyltrichlorosilane Stabilized with Hexamethyldisiloxane
Phenyltrichlorosilane with added hexamethyldisiloxane stabilizer for moisture protection during transport, classified under HTS 2931.90.0500 per Chapter 29 note (f). The stabilizer is necessary for preservation without creating specific-use formulation.
Diphenyldichlorosilane in Corrosion-Resistant Drum
Diphenyldichlorosilane packaged in fluoropolymer-lined steel drums for safe transport of this moisture-sensitive, corrosive compound, remaining HTS 2931.90.0500. Essential for consistent delivery to silicone manufacturing facilities.