Tributylphosphine Sulfide
Tributylphosphine sulfide is an organo-sulfur-phosphorus compound used as a ligand precursor and polymer stabilizer. Classifies under HTS 2930.90.92.51 as other organo-sulfur with P-S-C connectivity. Stable white solid for catalysis applications.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| ๐จ๐ณChina | 3.7% | โ | 3.7% |
| ๐ฒ๐ฝMexico | 3.7% | โ | 3.7% |
| ๐จ๐ฆCanada | 3.7% | โ | 3.7% |
| ๐ฉ๐ชGermany | 3.7% | โ | 3.7% |
| ๐ฏ๐ตJapan | 3.7% | โ | 3.7% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as organo-phosphorus compound
Chapter notes may prioritize phosphorus over sulfur classification.
If heterocyclic phosphorus variant
Later numerical order heterocyclic headings supersede per note 3.
Not sure which classification is right?
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Import Tips & Compliance
โข 31P NMR spectrum verifies structure (ฮด ~50 ppm)
โข Air-stable unlike parent phosphine; simplified shipping
โข Phosphorus content declaration required for waste treatment compliance
Related Products under HTS 2930.90.92.51
Methanesulfonyl Chloride
Methanesulfonyl chloride (MsCl) is a colorless liquid organo-sulfur compound used as a reagent in organic synthesis for converting alcohols to mesylates. It falls under HTS 2930.90.92.51 as an organo-sulfur compound containing sulfur directly linked to carbon, classified as 'other' within heading 2930. This compound is essential for sulfonation reactions in pharmaceutical and fine chemical production.
Ethyl Methanethiosulfonate
Ethyl methanethiosulfonate is a synthetic organo-sulfur reagent used in protein chemistry for cysteine modification. It qualifies under HTS 2930.90.92.51 as an other organo-sulfur compound with S-C bonds, not covered by specific 2930 subheadings. Primarily employed in biochemical research and proteomics.
Di-tert-butyl Disulfide
Di-tert-butyl disulfide is an organo-sulfur compound used as a polymerization modifier and lubricant additive. Falls under HTS 2930.90.92.51 as other organo-sulfur with S-S and C-S linkages. Provides steric protection in synthetic applications.
S-Phenyl Thioacetate
S-Phenyl thioacetate serves as a protected thiol equivalent in organic synthesis, releasing thiophenol under specific conditions. Under HTS 2930.90.92.51 as other organo-sulfur with S-C and C=O functions. Used in peptide and natural product synthesis.
Methyl 3-Mercaptopropionate
Methyl 3-mercaptopropionate is an organo-thiol ester used in polymer synthesis and flavor chemistry. HTS 2930.90.92.51 classification as other organo-sulfur compound with primary thiol functionality. Intermediate for methionine production.
Bis(2-chloroethyl) Sulfide
Bis(2-chloroethyl) sulfide, known as mustard gas precursor, is a toxic organo-sulfur compound with military history. Strictly controlled under HTS 2930.90.92.51 as other organo-sulfur. Used legitimately in pharmaceutical synthesis under license.