Carbonyl Sulfide (COS)
Carbonyl sulfide is a colorless, poisonous gas (CO S) considered a halide oxide analog in certain classifications but fits 'other' under chlorides/chloride oxides of nonmetals in HTS 2812.19.00.90 per Chapter 28 notes allowing carbon oxysulfide. It serves as an intermediate in chemical manufacturing and pesticide production.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified primarily as carbon disulfide analog
Chapter notes specify carbon oxysulfide under 2853, but pure COS may align with sulfur analogs in 2813.
If per Chapter 28 note 2(e) for carbon oxysulfide
Explicitly listed in notes for heading 2853 as other inorganic compounds of carbon.
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Import Tips & Compliance
• Comply with DOT hazardous material regulations; use specialized cylinders with pressure relief valves
• Include chemical analysis reports to distinguish from organic sulfur compounds; avoid misclassification pitfalls
• Register with ChemTRAC or equivalent for toxic gas tracking upon import
Related Products under HTS 2812.19.00.90
Phosgene Gas (Carbonyl Chloride)
Phosgene is a colorless, highly toxic gas with the chemical formula COCl2, classified as a chloride oxide of carbon (halide oxide of nonmetal) under HTS 2812.19.00.90 as it falls under 'other' chlorides and chloride oxides of nonmetals. It is primarily used in industrial chemical synthesis for producing polycarbonates and pharmaceuticals.
Thiophosgene (Carbonyl Sulfide Dichloride)
Thiophosgene (CSCl2) is a red liquid reagent used in organic synthesis, classified as a chloride of nonmetal (thiocarbonyl chloride) under HTS 2812.19.00.90 'other'. It meets chemically defined criteria in Chapter 28 for halide oxides/halides of nonmetals like carbon.
Phosphorus Oxychloride (POCl3)
Phosphorus oxychloride is a colorless liquid (POCl3) used in pesticide and flame retardant production, fitting 'other' chlorides and chloride oxides of nonmetals in HTS 2812.19.00.90. It qualifies as chemically defined per Chapter 28 Note 1.
Phosphorus Trichloride (PCl3)
Phosphorus trichloride (PCl3) is a fuming, colorless liquid essential for organophosphorus compounds, classified in HTS 2812.19.00.90 as 'other' chlorides of nonmetals. It adheres to Chapter 28 definitions excluding organo-inorganic compounds.
Arsenic Trichloride (AsCl3)
Arsenic trichloride is a toxic, oily liquid (AsCl3) used in wood preservation and glass production, under HTS 2812.19.00.90 as other nonmetal chlorides. Chemically defined inorganic compound per Chapter 28 notes.
Antimony Trichloride (SbCl3)
Antimony trichloride (SbCl3) is a hygroscopic solid used in fireproofing textiles, classified in 'other' chlorides of nonmetals HTS 2812.19.00.90. Meets inorganic halide criteria excluding Section XV metals.