Methylphosphonic Acid Mixture
A stabilized mixture primarily of methylphosphonic acid used in chemical synthesis and as a precursor for phosphonate-based water treatment agents. Classified under HTS 3824.99.93.61 due to its main component being phosphorus bonded solely to a methyl group without additional carbon attachments. This preparation is common in industrial chemical supply chains.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered primarily an inorganic acid without organic mixture dominance
Other inorganic acids shift to Chapter 28 if the organic component is not the main constituent.
If mixtures for electroplating or metal treatment applications
Preparations with specific end-uses like plating are segregated from general chemical mixtures.
If when sold as organo-phosphorus compounds for pharmaceutical intermediates
Chapter 29 covers heteroaromatic or specific organo-phosphorus for med/pharma use.
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Import Tips & Compliance
• Provide detailed compositional analysis showing >50% content of the specified phosphorus structure to justify classification
• Comply with REACH-like declarations if transshipping from EU; US importers need proper hazardous material labeling
• Watch for auto-reclassification to waste streams if concentration indicates unfit for use, per Chapter 38 notes
Related Products under HTS 3824.99.93.61
Dimethyl Methylphosphonate (DMMP)
DMMP is an organophosphorus compound used as a flame retardant additive and chemical intermediate in flameproof coatings and plastics. It falls under HTS 3824.99.93.61 because it consists mainly of chemicals containing a phosphorus atom bonded to one methyl group with no other carbon atoms directly attached beyond that. This specific mixture classification applies to its use in industrial chemical preparations.
n-Propylphosphonic Acid Formulation
Formulation primarily of n-propylphosphonic acid for use in corrosion inhibitors and scale control in oilfield chemicals. Classified in HTS 3824.99.93.61 due to the defining phosphorus-n-propyl bond with no additional carbons. This prep is optimized for industrial fluid applications.
Methylphosphonyl Difluoride Mixture
Stabilized mixture of methylphosphonyl difluoride employed in advanced materials synthesis and as a fluorophosphorus reagent. Meets HTS 3824.99.93.61 criteria with phosphorus-methyl bonding exclusivity. Highly reactive, thus supplied in inert carrier.
Ethyl Methylphosphonite Preparation
Industrial preparation mainly consisting of ethyl methylphosphonite used in organophosphorus synthesis for agrochemicals and flame retardants. It matches HTS 3824.99.93.61 as the core chemical features phosphorus bonded to an ethyl group with no further carbon chain. This mixture form ensures stability for shipping and handling.
Isopropylphosphonic Dichloride Solution
A diluted industrial solution mainly of isopropylphosphonic dichloride used in specialty polymer and herbicide production. Falls under HTS 3824.99.93.61 for mixtures where phosphorus is bonded only to an isopropyl group without extended carbon. The solution form aids safe transport.