Distilled methylphosphonic dichloride is a high-purity halogenated organo-phosphorus compound, fractionally distilled for research applications in organophosphorus chemistry. As a separate chemically defined organic compound with a direct carbon-phosphorus bond and chlorine substituents, it falls squarely under tariff item 2931.51.00, which covers methylphosphonic dichloride specifically.

2931.51.00

Methylphosphonic Dichloride

Methylphosphonic dichloride (CH3P(O)Cl2) is a halogenated organo-phosphorus compound used primarily as a chemical intermediate in organic synthesis. It is a separate chemically defined compound with a direct carbon-phosphorus bond, qualifying for tariff item 2931.51.00, which specifically names this compound.

2931.51.00

Methylphosphonic Dichloride 98% Technical Grade

Technical grade methylphosphonic dichloride at 98% purity contains minor impurities but remains a separate chemically defined compound under Chapter 29 Note 1(a). It is used in pesticide and flame retardant synthesis and falls under tariff item 2931.51.00, which names methylphosphonic dichloride specifically.

2931.51.00

Methylphosphonic Dichloride with Stabilizer

Methylphosphonic dichloride stabilized with an anti-hydrolysis agent for safe transport retains its classification under tariff item 2931.51.00, as the stabilizer is added for preservation per Chapter 29 Note 1(f). The principal compound remains chemically defined and is specifically named in this tariff item.

2931.51.00

Research-Grade Methylphosphonic Dichloride

Research-grade methylphosphonic dichloride is an ultra-pure form used for academic and R&D synthesis of phosphonate esters. As a separate chemically defined compound with a direct carbon-phosphorus bond and chlorine atoms, it is classified under tariff item 2931.51.00, which specifically covers methylphosphonic dichloride.

2931.52.00

3-Propanephosphonic Acid Dichloride

3-Propanephosphonic acid dichloride, also known as propylphosphonic dichloride, is a reactive organo-phosphorus compound containing a phosphorus atom bonded to a propyl group and two chlorine atoms. It is used as a phosphorylating agent in organic synthesis and falls under tariff item 2931.52.00 as a halogenated organo-phosphorous derivative.

2931.52.00

n-Propylphosphonic Dichloride

n-Propylphosphonic dichloride is the straight-chain isomer of propylphosphonic dichloride, with the formula C3H7P(O)Cl2. It is a colorless liquid that reacts readily with nucleophiles and is used in phosphorylation reactions. It is classified under tariff item 2931.52.00 as a halogenated organo-phosphorous derivative.

2931.52.00

Propylphosphonic Dichloride

Propylphosphonic dichloride is a halogenated organo-phosphorus compound with the formula C3H7P(O)Cl2, containing a phosphorus atom directly linked to a propyl carbon and two chlorine atoms. It is used as a reagent in organic synthesis and is classified under tariff item 2931.52.00 as a specific halophosphonate derivative.

2931.53.00

O-(3-Chloropropyl) O-[4-Nitro-3-(Trifluoromethyl)phenyl] Methylphosphonothionate

O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate is a halogenated organo-phosphorus compound, specifically a phosphonothionate ester. It contains chlorine and fluorine atoms directly bonded to carbon, along with a phosphorus atom linked to oxygen and carbon, qualifying it as an organo-inorganic compound under heading 29.31. This product is classified under tariff item 2931.53.00 as the sole item for this specific chemical.

2931.54.00

Dylox 80% Trichlorfon Soluble Powder

Dylox 80% Trichlorfon Soluble Powder is a concentrated soluble powder containing 80% trichlorfon, a halogenated organo-phosphorus compound, intended for turf and ornamental pest control. When the pure active ingredient is imported separately for formulation, it falls under tariff item 2931.54.00, which covers trichlorfon (ISO) as a chemically defined compound.

2931.54.00

Proxur (Trichlorfon) Medical Grade

Proxur (Trichlorfon) Medical Grade is a high-purity trichlorfon compound intended for pharmaceutical use as an antihelminthic agent. As a chemically defined halogenated organo-phosphorus compound, it is classified under tariff item 2931.54.00 when imported as an active pharmaceutical ingredient, even if it contains stabilizers for preservation.

2931.54.00

Trichlorfon 50% Water Soluble Granules

Trichlorfon 50% Water Soluble Granules is a granular formulation containing 50% trichlorfon for agricultural pest control. When imported as technical material for further dilution or formulation, the trichlorfon component is classifiable under tariff item 2931.54.00, provided the granulation aids do not render it suitable for a specific use.

2931.54.00

Trichlorfon Bulk API for Equine Dewormer

Trichlorfon Bulk API for Equine Dewormer is a bulk active pharmaceutical ingredient used to manufacture veterinary dewormer products. As a pure halogenated organo-phosphorus compound, it falls under tariff item 2931.54.00 when imported as an API, even if it contains minor impurities or stabilizers.

2931.54.00

Trichlorfon Research Grade 99+%

Trichlorfon Research Grade 99+% is a high-purity trichlorfon compound (≥99%) used for chemical synthesis and research purposes. As a chemically defined organo-inorganic compound, it is classified under tariff item 2931.54.00, provided it is not put up for retail sale as a pesticide or medicament.

2931.54.00

Trichlorfon Stabilized with Anti-caking Agent

Trichlorfon Stabilized with Anti-caking Agent is trichlorfon powder containing 0.5% silicon dioxide as an anti-caking agent for preservation during transport. Per Chapter 29 Note 1(f), such stabilizers do not affect classification, so the product remains under tariff item 2931.54.00 as trichlorfon (ISO).

2931.54.00

Trichlorfon Technical Grade 98%

Trichlorfon Technical Grade 98% is a pure trichlorfon compound (O,O-dimethyl (2,2,2-trichloro-1-hydroxyethyl)phosphonate) used as an active ingredient in pesticide manufacturing. As a chemically defined halogenated organo-phosphorus compound, it is classified under tariff item 2931.54.00 when imported as technical material.

2931.54.00

Trichlorfon USP Veterinary Grade

Trichlorfon USP Veterinary Grade is a pharmaceutical-grade trichlorfon compound meeting USP standards for veterinary deworming applications. As a chemically defined halogenated organo-phosphorus compound, it is classified under tariff item 2931.54.00 when imported as a bulk API, even if it contains stabilizers for preservation.

2931.59.00

2-Chloro-1,3,2-dioxaphospholane 2-Oxide

2-Chloro-1,3,2-dioxaphospholane 2-Oxide is a cyclic chlorophosphate compound used as a reactive intermediate in the synthesis of flame retardants and polymer additives. Its structure contains a phosphorus atom directly bonded to chlorine and carbon, qualifying it as a halogenated organo-phosphorus derivative under tariff item 2931.59.00.

2931.59.00

Bis(2-chloroethyl) Phosphonate

Bis(2-chloroethyl) Phosphonate is a difunctional chlorophosphonate used in flame retardant polymer synthesis and as a cross-linking agent. Its phosphorus atom is bonded to carbon and chlorine, making it a halogenated organo-phosphorus compound under tariff item 2931.59.00.

2931.59.00

Chloromethylphosphonic Acid

Chloromethylphosphonic Acid is a halogenated phosphonic acid used in agrochemical synthesis and metal surface treatment. The chloromethyl group is directly attached to phosphorus, meeting the criteria for a halogenated organo-phosphorus derivative under tariff item 2931.59.00.

2931.59.00

Chloromethylphosphonic dichloride

Chloromethylphosphonic dichloride (ClCH2P(O)Cl2) has phosphorus attached to one chloromethyl group, meeting the carbon limitation criterion for tariff item 2931.59.00. It is used in flame retardant polymer applications. This compound is a halogenated organo-phosphorus derivative.

2931.59.00

Cyclohexyl-Methyl-(Dimethylamino)ethylidene Phosphonamidic Fluoride

Cyclohexyl-Methyl-(Dimethylamino)ethylidene Phosphonamidic Fluoride is a halogenated organo-phosphorus compound with a cyclohexyl group on phosphorus, an N-(1-(dimethylamino)ethylidene) functionality, and a fluoride atom. With all alkyl chains at or below C10, it falls under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

Cyclopentyl-(Dibutylamino)propylidene Phosphonamidic Fluoride Methyl Salt

Cyclopentyl-(Dibutylamino)propylidene Phosphonamidic Fluoride Methyl Salt is an alkylated salt form of a cyclopentyl-derived phosphonamidic fluoride with a dibutylamino group. Used in asymmetric synthesis, this halogenated organo-phosphorus compound falls under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

Diethyl Chloromethylphosphonate

Diethyl Chloromethylphosphonate is a phosphonate ester with a chloromethyl substitution, used as a pharmaceutical intermediate and reagent in organic synthesis. Its phosphorus-carbon-chlorine structure qualifies it as a halogenated organo-phosphorus compound under tariff item 2931.59.00.

2931.59.00

Ethylphosphonic dibromide

Ethylphosphonic dibromide (C2H5P(O)Br2) is a dihalogenated phosphorus compound with a single ethyl substitution, qualifying for tariff item 2931.59.00. It is an essential intermediate for specialty phosphonate ligands in catalysis. The compound is a halogenated organo-phosphorus derivative.

2931.59.00

Ethylphosphonic dichloride

Ethylphosphonic dichloride (C2H5P(O)Cl2) is a halogenated organo-phosphorus compound where phosphorus is bonded to one ethyl group and two chlorine atoms. It falls under tariff item 2931.59.00 as a halogenated organo-phosphorus derivative. This chemical is used in synthesis of phosphonate esters.

2931.59.00

Ethylphosphonyl bromide

Ethylphosphonyl bromide (C2H5P(O)Br2) is a brominated variant where phosphorus bonds to one ethyl group, covered by tariff item 2931.59.00 as a halogenated organo-phosphorus derivative. It is utilized in advanced materials synthesis. The compound has a single ethyl group and two bromine atoms.

2931.59.00

Ethylphosphonyl Difluoride

Ethylphosphonyl Difluoride is an organo-inorganic compound featuring an ethyl alkyl chain attached to phosphorus with difluoride groups. It is classified under tariff item 2931.59.00 as a halogenated organo-phosphorous derivative.

2931.59.00

Ethylphosphonyl Difluoride 98% Technical Grade

Ethylphosphonyl Difluoride 98% Technical Grade is a technical grade product with minor impurities typical of industrial production. It remains classified under tariff item 2931.59.00 as Chapter 29 covers compounds whether or not containing impurities.

2931.59.00

High-Purity O-Pinacolyl Methylphosphonochloridate (99%+)

High-purity O-Pinacolyl methylphosphonochloridate (99%+) is an ultra-pure halogenated organo-phosphorus compound used in precision organic synthesis. Its structure features a phosphorus atom bonded to chlorine, a methyl group, and a pinacolyl ester group, qualifying it under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

IMPCH (O-Isopropyl Methylphosphonochloridate) Technical Grade

IMPCH (O-Isopropyl Methylphosphonochloridate) is a halogenated organo-phosphorus compound where a phosphorus atom is bonded to chlorine, a methyl group, and an isopropyl ester group. This technical-grade product is a separate chemically defined organic compound used as an intermediate in chemical synthesis, falling under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

Isopropyl-(Diethylamino)propylidene Phosphonamidic Fluoride

Isopropyl-(Diethylamino)propylidene Phosphonamidic Fluoride is a fluorinated phosphonamidic compound with an isopropyl P-substituent and an N-(1-(diethylamino)propylidene) group. With all groups at or below C10, it fits precisely within tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

Isopropylphosphonyl dichloride

Isopropylphosphonyl dichloride ((CH3)2CHP(O)Cl2) is a chlorinated organophosphorus compound with phosphorus bonded to one isopropyl group, precisely matching tariff item 2931.59.00 criteria. It serves as a key building block in organic synthesis. This is a halogenated organo-phosphorus derivative.

2931.59.00

Isopropylphosphonyl Difluoride

Isopropylphosphonyl Difluoride contains a branched isopropyl group linked to the phosphonyl difluoride moiety. It qualifies for tariff item 2931.59.00 as a halogenated organo-phosphorous derivative.

2931.59.00

Methyl-bis(diethylamino)methylene)phosphonamidofluoridate

Methyl-bis(diethylamino)methylene)phosphonamidofluoridate is a halogenated organo-phosphorus compound with fluorine directly linked to phosphorus. It fits the definition of 'Other' halogenated organo-phosphorous derivatives under tariff item 2931.59.00. This chemical is used in organophosphorus chemistry research.

2931.59.00

Methylphosphonic difluoride

Methylphosphonic difluoride (CH3P(O)F2) features a phosphorus atom bonded to one methyl group and two fluorine atoms, fitting the structural requirement of tariff item 2931.59.00 for halogenated derivatives with limited carbon content. It is used in chemical synthesis and research. This is a halogenated organo-phosphorus compound.

2931.59.00

Methylphosphonyl Difluoride

Methylphosphonyl difluoride (CH3P(O)F2) is a halogenated organo-phosphorus compound where a methyl group is directly linked to the phosphorus atom, which also carries two fluorine atoms. As a separate chemically defined organic compound containing phosphorus and halogen atoms directly bonded to carbon, it falls under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

Methylphosphonyl Difluoride Stabilized Solution

This stabilized solution of methylphosphonyl difluoride contains the active compound with an added anti-caking agent solely for safe transport and preservation. Chapter 29 Note 1(f) permits such stabilizers when they do not render the product suitable for a specific use, so the solution remains classified under tariff item 2931.59.00.

2931.59.00

n-Butyl-(Dipropylamino)butylidene Phosphonamidic Fluoride Hydrochloride

n-Butyl-(Dipropylamino)butylidene Phosphonamidic Fluoride Hydrochloride is the protonated hydrochloride salt of a C4 phosphonamidic fluoride with di-n-propylamino functionality. With all chains at or below C10, this halogenated organo-phosphorus compound falls under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

n-Propylphosphonyl Difluoride

n-Propylphosphonyl difluoride (CH3CH2CH2P(O)F2) is a halogenated organo-phosphorus compound with a straight-chain propyl group directly attached to the phosphorus atom, which also bears two fluorine atoms. As a separate chemically defined organic compound, it is classified under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

O-Cyclohexyl Methylphosphonofluoridate

O-Cyclohexyl Methylphosphonofluoridate is a halogenated organo-phosphorus compound with a cyclohexyl O-group, methyl alkyl, and fluoride on phosphorus. It is a chemically defined compound fitting tariff item 2931.59.00 as a halogenated organo-phosphorous derivative.

2931.59.00

O-Ethyl Methyl Phosphonofluoridate (EMPF)

O-Ethyl Methyl Phosphonofluoridate (EMPF) is a halogenated organo-phosphorus compound with an ethyl group and methyl substituent on the phosphorus atom bonded to fluoride. It is a chemically defined compound under tariff item 2931.59.00 as a halogenated organo-phosphorous derivative.

2931.59.00

O-Isopropyl Methylphosphonochloridate

O-Isopropyl methylphosphonochloridate is a halogenated organo-phosphorus compound with a phosphorus atom bonded to chlorine, a methyl group, and an isopropyl ester group. As a separate chemically defined organic compound, it is classified under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

O-Isopropyl Methylphosphonochloridate (98% Pure)

High-purity (98%) O-isopropyl methylphosphonochloridate is a colorless to pale yellow liquid used in fine chemical synthesis. This halogenated organo-phosphorus compound, with its defined chemical structure, falls under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

O-Isopropyl Methylphosphonofluoridate (IMPF)

O-Isopropyl Methylphosphonofluoridate (IMPF) is a halogenated organo-phosphorus compound with an isopropyl O-alkyl group and methyl alkyl on phosphorus with a fluoride. It is a chemically defined organo-inorganic compound under tariff item 2931.59.00.

2931.59.00

O-Methyl n-Propylphosphonofluoridate

O-Methyl n-Propylphosphonofluoridate is a halogenated organo-phosphorus compound with a methyl O-alkyl group, n-propyl alkyl, and fluoridate group. It meets Chapter 29's criteria for separate organic compounds under tariff item 2931.59.00.

2931.59.00

O-n-Propyl Ethylphosphonofluoridate

O-n-Propyl Ethylphosphonofluoridate is a specific phosphonofluoridate with n-propyl O-alkyl and ethyl alkyl groups. It qualifies as a separate chemically defined compound under tariff item 2931.59.00 as a halogenated organo-phosphorous derivative.

2931.59.00

O-Pinacolyl Methylphosphonochloridate

O-Pinacolyl methylphosphonochloridate is a halogenated organo-phosphorus compound featuring a phosphonochloridate group with a pinacolyl ester moiety. As a separate chemically defined organic compound containing phosphorus directly linked to carbon and halogen, it falls under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

O-Pinacolyl Methylphosphonochloridate with Stabilizer

This stabilized form of O-Pinacolyl methylphosphonochloridate contains minor anti-caking agents added solely for safe transport and preservation. Chapter 29 Note 1(f) permits such stabilizers when they do not render the product suitable for a specific use, so the product remains classified under tariff item 2931.59.00.

2931.59.00

Phosphonamidofluoridic Acid, Methyl-, Bis(diethylamino)methylene Ester

Phosphonamidofluoridic Acid, Methyl-, Bis(diethylamino)methylene Ester is a CAS-listed pure compound used as a reagent in organophosphorus chemistry research. It is classified under tariff item 2931.59.00 as a halogenated organo-phosphorous derivative. The compound's structure includes fluorine bonded to phosphorus.

2931.59.00

Research-Grade O-Pinacolyl Methylphosphonochloridate

Research-grade O-Pinacolyl methylphosphonochloridate is a laboratory reagent packaged in small quantities for research and development. As a separate chemically defined halogenated organo-phosphorus compound, it qualifies under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives.

2931.59.00

Tabun Intermediate GF-13

Tabun Intermediate GF-13 is a research-grade analog of a tabun nerve agent intermediate, specifically methyl-bis(diethylamino)methylene)phosphonamidofluoridate. It is used in toxicology studies and classified under tariff item 2931.59.00 due to its precise chemical identification as a halogenated organo-phosphorus compound.

2931.59.00

Technical Grade O-Pinacolyl Methylphosphonochloridate

Technical grade O-Pinacolyl methylphosphonochloridate is an industrial-grade halogenated organo-phosphorus compound used for bulk synthesis. Its specific organo-phosphorus-halogen structure qualifies it under tariff item 2931.59.00 for other halogenated organo-phosphorous derivatives, consistent with Chapter 29's coverage of chemically defined compounds.

2931.59.00

tert-Butyl-(Methylpropylamino)ethylidene Phosphonamidic Fluoride

tert-Butyl-(Methylpropylamino)ethylidene Phosphonamidic Fluoride is a fluorophosphonamidate compound with a tert-butyl group on phosphorus and mixed methyl/n-propyl groups on nitrogen. It is a halogenated organo-phosphorus derivative, classified under tariff item 2931.59.00 as 'Other' organo-inorganic compounds. This chemical serves as a building block for nerve agent analogs or therapeutic phosphonates.

2931.59.00

Tris(1,3-dichloro-2-propyl) Phosphate (TDCPP)

Tris(1,3-dichloro-2-propyl) Phosphate (TDCPP) is a chlorinated tris phosphate ester used as a flame retardant in flexible polyurethane foams for furniture and automotive applications. Its structure contains phosphorus bonded to carbon and chlorine, making it a halogenated organo-phosphorus derivative under tariff item 2931.59.00.

2931.59.00

Tris(2-chloroethyl) Phosphate (TCEP)

Tris(2-chloroethyl) Phosphate (TCEP) is a halogenated organo-phosphorus compound used primarily as a flame retardant in plastics, textiles, and polyurethane foams. Its phosphorus atom is bonded to carbon and chlorine, qualifying it under tariff item 2931.59.00.

2931.59.00

Tris(2-chloroisopropyl) Phosphate (TCPP)

Tris(2-chloroisopropyl) Phosphate (TCPP) is a low-volatility chlorinated phosphate ester serving as a reactive and additive flame retardant in rigid polyurethane foams and coatings. Its halogenated organo-phosphorus structure qualifies it under tariff item 2931.59.00.