Thionyl Chloride
Thionyl chloride (SOCl2) is a colorless liquid used as a chlorinating agent in organic synthesis for converting carboxylic acids to acid chlorides. It falls under HTS 2812.90.00 as a halide oxide of nonmetals, specifically sulfur oxychloride, distinct from pure halides like phosphoryl chloride in 2812.10. This chemically defined inorganic compound is essential in pharmaceutical and agrochemical manufacturing.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing fluorine or classified as complex salt
Fluorinated halide derivatives may shift to Chapter 28 fluorides; complex salts go to 2842 per chapter notes.
If halogenated and meeting organic compound criteria
Organic derivatives of inorganic halides fall in Chapter 29; Chapter 28 excludes organo-inorganic compounds.
If imported as mixture or preparation for retail
Chemical mixtures not purely chemically defined classify in 3824; pure compounds stay in Chapter 28.
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Import Tips & Compliance
• Obtain proper hazardous material declarations (DOT/UN 1836) and ensure packaging meets UN standards for corrosive liquids
• Verify chemical purity certificates to confirm classification as chemically defined under Chapter 28 notes
• Avoid misclassification as organo-chlorine compounds; provide lab analysis if composition is questioned by customs
Related Products under HTS 2812.90.00
Phosphoryl Chloride Stabilized
Stabilized phosphoryl chloride (POCl3 with inhibitors) is a fuming liquid used in phosphate ester production and as a dehydrating agent. Though pure POCl3 is 2812.10, stabilized versions with inorganic additives fall under HTS 2812.90.00 as other halide oxides of nonmetals. Chemically defined and excluded from organic chapters.
Selenium Oxychloride
Selenium oxychloride (SeOCl2) is an oily liquid used as a chlorinating agent in analytical chemistry and selenium compound synthesis. Falls under HTS 2812.90.00 as a halide oxide of nonmetals (selenium-chlorine oxide), chemically defined and not doped for electronics per notes. Highly reactive and moisture-sensitive.
Arsenic Oxychloride
Arsenic oxychloride (AsOCl3) is a colorless fuming liquid employed in organic synthesis and glass production. Classified in HTS 2812.90.00 as other halide oxides of nonmetals, it is chemically defined under Chapter 28 and used sparingly due to toxicity.
Tellurium Oxychloride
Tellurium oxychloride (TeOCl2) is a white crystalline solid used in semiconductor doping and analytical standards. It falls under HTS 2812.90.00 as a halide oxide of nonmetals, pure and undoped per chapter notes, distinguishing from electronic forms.
Sulfuryl Chloride
Sulfuryl chloride (SO2Cl2) is a pale yellow liquid serving as a chlorosulfonating and chlorinating reagent in fine chemical production. Classified in HTS 2812.90.00 as a halide oxide of nonmetals (chlorine oxides of sulfur), it is chemically defined per Chapter 28/29 notes. Used in dyes, pharmaceuticals, and pesticides.
Carbonyl Fluoride
Carbonyl fluoride (COF2) is a colorless, highly toxic gas used in fluorocarbon production and as a fluorinating agent. It classifies under HTS 2812.90.00 as a halide oxide of nonmetals (fluoride oxide of carbon), meeting Chapter 28 chemically defined criteria. Primarily for specialty chemical synthesis.