NaB(C6H5)4 Precipitating Agent
NaB(C6H5)4, or sodium tetraphenylboron, serves as a selective precipitating agent for alkali metal ions in quantitative analysis, classified in HTS 2931.90.15.00 as an aromatic organo-inorganic compound per heading 2931. Its structure includes boron directly linked to four aromatic phenyl groups.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If treated as a simple alkali metal borate
Chapter 28 sulfides and polysulfides include some boron salts if organic components are incidental, per Chapter 29 exclusion notes.
If non-aromatic organo-inorganic variants
Other organo-inorganic compounds without aromatic groups fall under the residual 2931.90.90 subheading.
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Import Tips & Compliance
• Label shipments with GHS hazard pictograms for irritant properties; obtain end-user certificates if destined for research institutions; check for anti-dumping duties on boron compounds from certain origins
Related Products under HTS 2931.90.15.00
Sodium Tetraphenylboron
Sodium tetraphenylboron is a chemically defined organo-inorganic compound featuring four phenyl groups attached to a boron atom, with sodium as the counterion, classified under HTS 2931.90.15.00 as an aromatic organo-inorganic compound. It is primarily used as a reagent in analytical chemistry for detecting potassium ions and as a precipitating agent in cation analysis.
Sodium Tetraphenylborate Analytical Grade
High-purity sodium tetraphenylborate (NaBPh4) in analytical grade, a white crystalline powder used for gravimetric determination of potassium in lab settings, falls under HTS 2931.90.15.00 due to its aromatic organo-inorganic nature with direct boron-carbon bonds. It meets Chapter 29 note (a) as a separate chemically defined compound.
Tetraphenylboron Sodium Salt 99% Pure
99% pure tetraphenylboron sodium salt is a key organo-inorganic reagent for organic synthesis and ion-selective electrode preparation, fitting HTS 2931.90.15.00 as a chemically pure aromatic compound with B-C bonds to phenyl rings. It complies with Chapter 29's scope for separate organic compounds.
BPh4Na Ion Pairing Reagent
BPh4Na (sodium tetraphenylborate) acts as an ion-pairing reagent in ion chromatography and HPLC methods for cation separation, classified under HTS 2931.90.15.00 for its aromatic organo-inorganic structure. It qualifies under Chapter 29 note (a) as a pure compound with impurities not affecting classification.
Sodium Tetraphenylboron for Potassium Assay
Specialty sodium tetraphenylboron formulated for potassium assay kits in clinical and environmental labs, remains under HTS 2931.90.15.00 as the principal aromatic organo-inorganic compound. Its use as a precipitant aligns with chemically defined status in Chapter 29.