HS Code for Sodium ferrocyanide

Sodium ferrocyanide, also known as yellow prussiate of soda, is classified under HS code 2837.20. This heading is designated for cyanides, cyanide oxides, and complex cyanides. Sodium ferrocyanide (Na4[Fe(CN)6]) is a coordination compound, which qualifies it as a "complex cyanide" under the Harmonized System. Unlike simple cyanides where the cyanide ion is directly bonded to a metal cation, complex cyanides involve a central metal atom (iron, in this case) surrounded by cyanide ligands. This chemical distinction is the primary driver for its classification in the 2837.20 subheading. It is widely used as an anti-caking agent in road salt and table salt, as well as in the production of pigments and in petroleum refining.

Products Included

• Yellow prussiate of soda
• Sodium hexacyanoferrate(II)
• Technical grade sodium ferrocyanide decahydrate
• Anti-caking agent grade sodium ferrocyanide
• Sodium ferrocyanide for blueprint paper production

Common Misclassification

Sodium ferrocyanide is frequently confused with sodium cyanide, which is classified under 2837.11. Sodium cyanide is a simple, highly toxic cyanide salt, whereas sodium ferrocyanide is a complex salt with much lower acute toxicity. Another common error is misclassifying it under 2837.19 (Other simple cyanides). Because it contains the [Fe(CN)6] complex ion, it must be classified under 2837.20. It should also not be confused with sodium ferricyanide (red prussiate of soda), though both fall under the same 2837.20 subheading.

FAQ

What is the HS code for sodium ferrocyanide?

The HS code for sodium ferrocyanide is 2837.20, which is the category for complex cyanides.

Is sodium ferrocyanide the same as sodium cyanide for customs purposes?

No. Sodium cyanide is classified under 2837.11, while sodium ferrocyanide is a complex cyanide classified under 2837.20 due to its different chemical structure.