9902.05.54 - Sodium erythorbate (sodium (2R)-2-[(2R)-4,5-dihydroxy- 3-oxo-2,3-dihydro-2-furanyl]-2-hydroxyethanolate) (CAS No. 6381-77-7) (provided for in subheading 2932.20.50)

This HTS category, 9902.05.54, specifically classifies Sodium Erythorbate. Sodium Erythorbate, also known by its chemical name sodium (2R)-2-[(2R)-4,5-dihydroxy-3-oxo-2,3-dihydro-2-furanyl]-2-hydroxyethanolate (CAS No. 6381-77-7), is a salt of erythorbic acid. It is primarily utilized as an antioxidant and a curing agent in food products, particularly in processed meats, to maintain color and prevent spoilage. Its function as a food additive is the key characteristic for its classification here.

Given that this is a leaf node within Chapter 99, it is important to note that Chapter 99 entries are generally for temporary legislation, temporary modifications under trade agreements, or specific import restrictions, often relating to Section 22 of the Agricultural Adjustment Act. Therefore, this classification is distinct from the general HTS classifications found in earlier chapters which cover a broader range of goods based on their inherent material composition and primary use, rather than specific regulatory treatments.

The "provided for in subheading 2932.20.50" notation is critical for understanding the underlying classification of Sodium Erythorbate when not subject to the temporary provisions of Chapter 99. This indicates that the substance itself, without the specific regulatory overlay of Chapter 99, would typically fall under heading 2932, which covers heterocyclic compounds with an oxygen hetero-atom only. The specific subheading 2932.20.50 then further refines its classification within the broader chemical categories.