Thiodiglycol (Bis(2-hydroxyethyl)sulfide)
Thiodiglycol, chemically known as bis(2-hydroxyethyl)sulfide, is a colorless to pale yellow liquid organo-sulfur compound with the formula HS(CH2CH2O)2H. It falls under HTS 2930.70.00.00 as a specifically named separate chemically defined organic compound containing sulfur directly linked to carbon atoms.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If impure or containing additives rendering it suitable for specific non-general use
Mixtures or impure forms of organo-sulfur compounds not specifically named fall under the residual 2930.90 subheading.
If when imported as a formulated mixture for retail or specific industrial application
Chemical preparations or mixtures not chemically defined as pure compounds are classified in Chapter 38.
If classified primarily by alcohol function rather than sulfur linkage
Per Chapter 29 notes, classification follows the last occurring heading; pure diols without sulfur emphasis might go to oxygen-function headings.
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Import Tips & Compliance
• Provide detailed chemical analysis certificates confirming purity and identity as bis(2-hydroxyethyl)sulfide to avoid misclassification
• Comply with chemical export control regulations (e.g
• Wassenaar Arrangement) due to potential dual-use in inks or precursors; obtain necessary licenses
• Ensure proper Hazard Communication labeling as it may be regulated under TSCA and DOT for transport
Related Products under HTS 2930.70.00.00
Thiodiglycol 95% Technical Grade
Technical grade thiodiglycol at 95% purity, supplied as a stabilized liquid for industrial use in dye manufacturing. Classified under HTS 2930.70.00.00 as bis(2-hydroxyethyl)sulfide per Chapter 29 note (f) allowing stabilizers for preservation.
Pharmaceutical Grade Thiodiglycol USP
Ultra-pure thiodiglycol meeting USP standards for use as a solvent in pharmaceutical intermediates and mustard agent synthesis precursor. HTS 2930.70.00.00 applies to this chemically defined organo-sulfur compound regardless of end use.
Thiodiglycol Ink Solvent TGS-100
Commercial thiodiglycol branded as TGS-100, primarily used as a humectant and solvent in water-based inkjet formulations. Remains under HTS 2930.70.00.00 as the pure compound despite ink industry application.
Stabilized Thiodiglycol for Dye Synthesis
Thiodiglycol with added stabilizer for safe transport in reactive dye manufacturing processes. HTS 2930.70.00.00 covers such preparations per Chapter 29 note (f) when stabilizer is solely for preservation.
Thiodiglycol Aqueous Solution 70%
70% thiodiglycol in water solution for safe handling in chemical processing. Qualifies under HTS 2930.70.00.00 per Chapter 29 note (d) for aqueous solutions of named compounds.