Other

2920.22.00Diethyl phosphite

2920.23.00Trimethyl phosphite

2920.24.00Triethyl phosphite

2920.29.00Other

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Products classified under Tariff item 2920.2

Dimethyl Phosphite (DMP)

Dimethyl phosphite (DMP), a colorless liquid organophosphorus compound with the formula (CH3O)2P(O)H. It is a separate chemically defined organic compound classified under tariff item 2920.21.00 as a phosphite ester of an inorganic acid of a non-metal. It serves as a key intermediate in the production of pesticides, flame retardants, and other chemicals.

Dimethyl Phosphite in Aqueous Solution 50%

Dimethyl phosphite in aqueous solution at 50% concentration, prepared for safe transport. This solution falls under tariff item 2920.21.00 as a product of a separate chemically defined organic compound dissolved in water, per Chapter 29 Note 1(d). It is used in corrosion inhibitors and other industrial applications.

Dimethyl Phosphite Reagent Grade

Reagent-grade dimethyl phosphite meeting ACS specifications for laboratory use. As a separate chemically defined organic compound, it is classified under tariff item 2920.21.00 per Chapter 29 Note 1(a). It is ideal for research and development in phosphonate chemistry.

Dimethyl Phosphite with Stabilizer

Dimethyl phosphite stabilized with BHT (butylated hydroxytoluene) for transport stability. Chapter 29 Note 1(f) permits added stabilizers necessary for preservation or transport without changing classification. This product falls under tariff item 2920.21.00 and is used in herbicide production and other applications.

Distilled Dimethyl Phosphite 99%

High-purity distilled dimethyl phosphite with 99% assay, used as an intermediate in pesticide production. As a separate chemically defined organic compound with the formula (CH3O)2P(O)H, it is classified under tariff item 2920.21.00 per Chapter 29 Note 1(a).

High Assay Dimethyl Phosphite 99.5%

Ultra-high purity dimethyl phosphite at 99.5% for pharmaceutical intermediates. This separate chemically defined organic compound is classified under tariff item 2920.21.00 as a phosphite ester. Its high purity supports sensitive chemical reactions in pharmaceutical synthesis.

Industrial Grade Dimethyl Phosphite

Industrial-grade dimethyl phosphite with 97-98% purity, used in manufacturing water treatment agents and as a reducing agent. It is classified under tariff item 2920.21.00 as a pure phosphite ester, meeting the criteria for a separate chemically defined organic compound.

Purified Dimethyl Phosphite for Pesticides

Purified dimethyl phosphite for glyphosate synthesis, a key agrochemical intermediate. As a separate chemically defined organic compound, it is classified under tariff item 2920.21.00 per Chapter 29 Note 1(a). It is essential in the production of herbicides.

Stabilized Dimethyl Phosphite Bulk

Bulk stabilized dimethyl phosphite with an anti-caking agent for industrial handling. Chapter 29 Note 1(f) allows added anti-caking agents necessary for preservation or transport. This product is classified under tariff item 2920.21.00 and is applied in polymer additives.

Technical Dimethyl Phosphite for Flame Retardants

Technical-grade dimethyl phosphite designed for flame retardant production. As a pure phosphite ester, it is classified under tariff item 2920.21.00 per Chapter 29 Note 1(a). It reacts to form phosphorus-containing polymers used in flame retardants.

Bulk Diethyl Phosphite in ISO Tanks

Bulk diethyl phosphite shipped in ISO tanks for industrial chemical distribution. The product is a separate chemically defined organic compound of heading 29.20, and the ISO tank is transport packaging that does not alter its classification.

Diethyl Phosphite

Diethyl phosphite, a colorless liquid organophosphorus compound with the formula (C2H5O)2P(O)H, is a separate chemically defined phosphite ester of an inorganic acid of a non-metal. It meets the Chapter 29 criteria for classification under heading 29.20.

Diethyl Phosphite 98% Technical Grade

Technical grade diethyl phosphite at 98% purity is a separate chemically defined compound, even with minor impurities. It is used in industrial synthesis of herbicides like glyphosate intermediates and falls under heading 29.20 as a phosphite ester.

Diethyl Phosphite Flame Retardant Intermediate

Diethyl phosphite used as an intermediate for synthesizing phosphorus-based flame retardants is a separate chemically defined compound. Its end use does not affect classification under heading 29.20, which covers phosphite esters by chemical identity.

Diethyl Phosphite for Glyphosate Synthesis

High-purity diethyl phosphite specifically for glyphosate synthesis is a separate chemically defined compound. The intended use in agrochemical production does not change its classification under heading 29.20.

Diethyl Phosphite with 50ppm BHT Stabilizer

Diethyl phosphite with 50 ppm BHT stabilizer is a separate chemically defined compound with an added stabilizer necessary for preservation. Under Chapter 29 Note 1(f), such additions do not remove the product from heading 29.20.

Distilled Diethyl Phosphite 99.5% Purity

Vacuum-distilled diethyl phosphite at 99.5% purity is a separate chemically defined compound. High purity does not affect classification under heading 29.20, which covers phosphite esters regardless of purity level.

Stabilized Diethyl Phosphite with MEHQ Inhibitor

Diethyl phosphite stabilized with 100 ppm MEHQ inhibitor is a separate chemically defined compound with an added stabilizer for preservation. Chapter 29 Note 1(f) permits such additions without changing the classification under heading 29.20.

99% Pure Trimethyl Phosphite

High-purity trimethyl phosphite (99%) is a separate chemically defined organic compound with the formula P(OCH3)3, an ester of phosphorous acid. It is used as a reagent in fine chemical synthesis for agrochemicals and polymers, and meets the criteria of Chapter 29 Note 1(a) as a chemically defined compound without added substances.

Distilled Trimethyl Phosphite 98%

Distilled trimethyl phosphite at 98% purity is a separate chemically defined organic compound, an ester of phosphorous acid. It is used in pharmaceutical phosphonate synthesis and qualifies under Chapter 29 Note 1(a) as a chemically defined compound, even with minor impurities.

Industrial Grade Trimethyl Phosphite

Industrial-grade trimethyl phosphite is a separate chemically defined organic compound used in large-scale production of flame retardants and plasticizers. It meets Chapter 29 Note 1(a) criteria as a chemically defined compound, and its industrial grade does not exclude it from the heading.

Stabilized Trimethyl Phosphite

Stabilized trimethyl phosphite contains an added stabilizer for safe transport, which is permitted under Chapter 29 Note 1(f) as a stabilizer necessary for preservation or transport. It remains classified as a phosphite ester under tariff item 2920.23.00, provided the stabilizer does not make it suitable for a specific use.

Technical Trimethyl Phosphite

Technical-grade trimethyl phosphite is a separate chemically defined organic compound used in pesticide manufacturing. It qualifies under Chapter 29 Note 1(a) as a chemically defined compound, and technical grade does not preclude classification as long as it is not a formulated product.

Trimethyl Phosphite

Trimethyl phosphite is a colorless liquid organophosphorus compound with the formula P(OCH3)3, classified as a phosphite ester. It is a separate chemically defined compound used as a key reagent in organic synthesis for producing pesticides and other chemicals, meeting Chapter 29 Note 1(a).

Distilled Triethyl Phosphite BP Grade

Distilled triethyl phosphite of BP grade, a separate chemically defined organic compound (C6H15O3P), purified by fractional distillation to remove secondary phosphites. It is a phosphite ester of phosphorous acid, an inorganic acid of a non-metal, and therefore falls squarely under tariff item 2920.24.00.

High Purity Triethyl Phosphite 99.5%

High-purity triethyl phosphite at 99.5% purity, a separate chemically defined organic compound used as an intermediate in pharmaceutical synthesis. It is a phosphite ester of phosphorous acid, meeting the definition of heading 29.20 and specifically tariff item 2920.24.00.

Technical Triethyl Phosphite 97% Drums

Technical-grade triethyl phosphite at 97% purity, packaged in 200 kg drums for bulk chemical import. As a separate chemically defined organic compound, it is a phosphite ester of phosphorous acid, classified under tariff item 2920.24.00. The minor impurities do not affect its classification.

Triethyl Phosphite

Triethyl phosphite, a colorless liquid organophosphorus compound with the formula P(OCH2CH3)3, is a phosphite ester of phosphorous acid. It is a separate chemically defined organic compound, classified under tariff item 2920.24.00 as an ester of an inorganic acid of a non-metal.

Triethyl Phosphite 98% Technical Grade

Technical-grade triethyl phosphite at 98% purity, used in industrial synthesis of herbicides and stabilizers. It is a separate chemically defined organic compound, a phosphite ester of phosphorous acid, classified under tariff item 2920.24.00. Minor impurities do not alter its chemical identity.

Triethyl Phosphite for Pesticide Synthesis

Industrial triethyl phosphite specified for glyphosate synthesis, but classification is based on chemical identity, not end use. As a separate chemically defined organic compound, it is a phosphite ester of phosphorous acid, classified under tariff item 2920.24.00.

Triethyl Phosphite in Ethanol Solution 50%

Triethyl phosphite dissolved in ethanol at 50% concentration for safe handling and transport. Per Chapter Note 1(e), solutions in other solvents are classified under this chapter if the solvent is necessary for safety or transport and does not make the product suitable for a specific use. It falls under tariff item 2920.24.00.

Triethyl Phosphite Stabilized with BHT

Triethyl phosphite stabilized with butylated hydroxytoluene (BHT) for safe transport and storage. Per Chapter Note 1(f), the addition of a stabilizer necessary for preservation does not affect classification. It remains a phosphite ester under tariff item 2920.24.00.

Triethyl Phosphite with Anti-Dusting Agent

Triethyl phosphite with an added anti-dusting agent for bulk handling safety. Per Chapter Note 1(g), the addition of an anti-dusting agent for safety does not change classification, as it does not render the product suitable for a specific use. It remains a phosphite ester under tariff item 2920.24.00.

Triethyl Phosphite with MEHQ Inhibitor

Triethyl phosphite inhibited with 4-methoxyphenol (MEHQ) to prevent polymerization. Per Chapter Note 1(f), the addition of a stabilizer necessary for preservation or transport does not affect classification. It remains a phosphite ester under tariff item 2920.24.00.

Bis(2,4-dicumylphenyl) Pentaerythritol Diphosphite

Bis(2,4-dicumylphenyl) pentaerythritol diphosphite is a sterically hindered phosphite ester used as a processing and long-term heat stabilizer in nylon and other engineering plastics. Its dual phosphite functionality provides hydrolysis resistance, making it suitable for demanding applications. This compound falls under tariff item 2920.29.00 as an 'other' phosphite ester, not elsewhere specified.

Dibutyl Phosphite

Dibutyl phosphite is a dialkyl phosphite ester used as a reactive intermediate in the production of flame retardants, adhesives, and lubricant additives. Its chemical structure, containing two butyl groups attached to a phosphite moiety, places it under the 'other' phosphite esters category. This product is correctly classified under tariff item 2920.29.00.

Diisodecyl Pentaerythritol Diphosphite

Diisodecyl pentaerythritol diphosphite is a complex phosphite ester antioxidant used to stabilize polyolefins against thermal degradation during processing and end-use. Its structure, featuring two phosphite groups linked via a pentaerythritol backbone, classifies it under 'other' phosphite esters. This product falls under tariff item 2920.29.00.

Dioctadecyl Pentaerythritol Diphosphite

Dioctadecyl pentaerythritol diphosphite is a high-molecular-weight phosphite ester that provides long-term thermal stability to high-density polyethylene and other polyolefins. Its bulky structure reduces volatility and migration, making it effective in demanding applications. This compound is classified under tariff item 2920.29.00 as an 'other' phosphite ester.

Diphenyl Decyl Phosphite

Diphenyl decyl phosphite is a mixed phosphite ester used as an antioxidant in lubricants and greases to prevent oxidative degradation. Its structure combines phenyl and decyl groups attached to a phosphite moiety, placing it under 'other' phosphite esters. This product is correctly classified under tariff item 2920.29.00.

Ethyl Diphenyl Phosphite

Ethyl diphenyl phosphite is a mixed phosphite ester that acts as a melt processing stabilizer for engineering plastics, preventing degradation during high-temperature processing. Its structure, containing one ethyl and two phenyl groups, classifies it under 'other' phosphite esters. This product falls under tariff item 2920.29.00.

Isodecyl Diphenyl Phosphite

Isodecyl diphenyl phosphite is a phosphite ester used as a hydrolysis stabilizer in polyurethane formulations, protecting against moisture-induced degradation. Its structure features an isodecyl group and two phenyl groups, placing it under 'other' phosphite esters. This compound is classified under tariff item 2920.29.00.

Methyl Diethanolamine Phosphite

Methyl diethanolamine phosphite is a phosphite ester containing an amino-alcohol moiety, used as a reactive flame retardant in rigid polyurethane foams. Its unique structure, combining a phosphite group with diethanolamine, classifies it under 'other' phosphite esters. This product falls under tariff item 2920.29.00.

Poly(dipropylene glycol) Phenyl Phosphite

Poly(dipropylene glycol) phenyl phosphite is a polymeric phosphite ester that offers low volatility stabilization for adhesives and sealants. Its polymeric structure, with phenyl groups, places it under 'other' phosphite esters. This product is correctly classified under tariff item 2920.29.00.

Triethyl Phosphite

Triethyl phosphite is a clear liquid organophosphorus compound used as a reagent in organic synthesis, a ligand in metal catalysis, and an intermediate for insecticides. Its structure, with three ethyl groups attached to a phosphite moiety, classifies it under 'other' phosphite esters. This product falls under tariff item 2920.29.00.

Trimethyl Phosphite

Trimethyl phosphite is a colorless liquid organophosphorus compound with the formula P(OCH3)3, used as a reagent in organic synthesis and as an intermediate for flame retardants and plasticizers. Its structure, with three methyl groups, places it under 'other' phosphite esters. This compound is classified under tariff item 2920.29.00.

Triphenyl Phosphite

Triphenyl phosphite is a white crystalline solid used as a stabilizer in PVC plastics and as an antioxidant in various polymers. Its structure, with three phenyl groups, classifies it under 'other' phosphite esters. This product falls under tariff item 2920.29.00.

Tris(2,4-di-tert-butylphenyl) Phosphite

Tris(2,4-di-tert-butylphenyl) phosphite is a hindered phosphite ester used as a processing and long-term heat stabilizer for polyethylene and other polyolefins. Its sterically protected structure, with three bulky aryl groups, places it under 'other' phosphite esters. This compound is classified under tariff item 2920.29.00.

Tris(2-ethylhexyl) Phosphite

Tris(2-ethylhexyl) phosphite is a viscous liquid phosphite ester used as a secondary plasticizer and heat stabilizer in PVC and other polymers. Its structure, with three 2-ethylhexyl groups, classifies it under 'other' phosphite esters. This product falls under tariff item 2920.29.00.