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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing arsenic, lead, or mercury directly linked to carbon
Chapter notes specify organo-inorganic compounds with nonmetals/metals like arsenic/lead fall under separate subheading 2931.90.30.
If classified as metal halide rather than organo-inorganic
Silicon halides without aromatic carbon linkage might fall under Chapter 28 inorganic compounds.
If imported as reaction mass or mixture with solvents
Solutions exceeding transport-only criteria per Chapter 29 note (e) shift to Chapter 38 reaction mixtures.
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Import Tips & Compliance
• Provide Safety Data Sheets (SDS) and confirm 99%+ purity certification to meet Chapter 29 chemical compound requirements
• Verify proper UN-approved packaging for corrosive liquids (UN 2434) to avoid customs delays
• Include end-use statement distinguishing industrial intermediate use from consumer applications
Related Products under HTS 2931.90.05.00
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.
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.