Esters of inorganic acids .. Theophosphoric. Hydrogen halides. Isocyanic acid (Isocyanate). Sulfhydric acid - hydrogen sulphide

(Other than esters of hydrogen halides) and their salts; halogenated, sulphonated, nitrated or nitrosated derivatives;
2920.10 - Thiophotosporic esters and their salts; halogenated, sulphonated, nitrated or nitrosated derivatives
2920.90 - Other
In this item enter esters of other inorganic acids and salts of these esters:
except:
Hydrogen halide esters.
B) Esters in the following articles of this chapter (eg isocyanic acid esters) (isocyanates) (heading 29.29) and sulfhydric acid sulfides (heading 29.30).