HS Code for Thiodiglycol

Thiodiglycol, chemically known as bis(2-hydroxyethyl)sulfide, is classified under HS code 2930.70. As an organo-sulphur compound, it is placed within Chapter 29 (Organic chemicals) and heading 2930. This heading is reserved for compounds that contain a sulfur atom bonded directly to a carbon atom. Thiodiglycol is specifically identified in the Harmonized System nomenclature under its own subheading due to its significance in industrial chemistry and its status as a precursor chemical under international monitoring. The classification is straightforward under GRI 1, as the chemical name is explicitly mentioned in the subheading text. It is a colorless to pale yellow liquid used extensively as a solvent in the textile industry for dye applications and as an intermediate in the production of various chemical products, including lubricants and plastics. Because it is a separate chemically defined compound, it must be classified in Chapter 29 regardless of its intended industrial application, provided it does not contain additives that make it a prepared mixture.

Products Included

• Thiodiglycol (INN)
• Bis(2-hydroxyethyl)sulfide
• 2,2'-Thiodiethanol
• Technical grade thiodiglycol

Common Misclassification

Thiodiglycol can be misclassified under HS code 2905.39 (Other diols) because of its glycol-like structure. However, because it contains a sulfur atom, Note 6 to Chapter 29 requires it to be classified as an organo-sulphur compound under 2930. It may also be confused with other organo-sulphur compounds in 2930.90, but since the 2017 HS updates, it has its own specific code at 2930.70.

FAQ

What is the HS code for thiodiglycol?

The specific HS code for thiodiglycol (bis(2-hydroxyethyl)sulfide) is 2930.70.

Is thiodiglycol subject to international trade restrictions?

Yes, thiodiglycol is a Schedule 3 chemical under the Chemical Weapons Convention (CWC) and may require specific export licenses or declarations.