2833.29.40.00 - Of chromium

This category, HTS Code 2833.29.40.00, specifically classifies inorganic sulfates of chromium. These are chemical compounds where chromium is combined with the sulfate radical (SO₄²⁻). Examples include chromic sulfate and chromium(III) sulfate. These substances are often used in industries such as tanning, dyeing, and pigment production due to the characteristic properties of chromium.

Distinguishing this category from its siblings is crucial for accurate classification. While other categories at this level cover sulfates of cobalt, iron, vanadium, and zinc, this node exclusively pertains to sulfates where chromium is the primary metallic element. For instance, 2833.29.10.00 would cover cobalt sulfate, whereas 2833.29.40.00 is reserved for chromium sulfate. Similarly, any sulfates where iron, vanadium, or zinc are the dominant metallic components would fall under their respective sibling categories.

As this HTS code is a leaf node, there are no further subdivisions. Therefore, classification within this code relies on confirming that the imported or exported material is indeed a sulfate and that its metallic component is chromium. When encountering a sulfate compound, verifying the principal metal present is the determining factor for correctly assigning it to this specific sub-heading rather than a sibling category or a broader "other" classification.