Tolyltriazole Corrosion Inhibitor
Tolyltriazole (CAS 29385-43-1) is a heterocyclic nitrogen compound used primarily as a corrosion inhibitor in metalworking fluids and cooling systems. It forms a protective film on copper and brass surfaces, preventing oxidation and degradation. Classified under HTS 2933.99.82.20 as a specific aromatic heterocyclic compound with nitrogen hetero-atoms only.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended with solvents or additives exceeding 10% by weight
Mixtures containing tolyltriazole with functional additives become chemical preparations classifiable in Chapter 38 rather than pure organic compounds.
If when supplied as formulated antifreeze or coolant additive
Antifreeze preparations containing tolyltriazole as corrosion inhibitor component fall under heading 3811 for fuel additives.
If imported as a salt form like tolyltriazole sodium salt
Organic salts are classified under heading 2942 per chapter note 3(C)(1), separate from the base heterocyclic compound.
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Import Tips & Compliance
• Provide CAS number 29385-43-1 and purity certificate on commercial invoice to confirm classification under 2933.99.82.20
• Include SDS and end-use statement specifying corrosion inhibition to avoid reclassification as a mixture under Chapter 38
• Verify TSCA registration for US entry; common pitfall is missing impurity declarations exceeding chapter note limits
Related Products under HTS 2933.99.82.20
Tolyltriazole Metal Passivator TTA
Technical grade tolyltriazole (TTA, CAS 29385-43-1) serves as a metal passivator in hydraulic oils and lubricants. The compound's triazole ring structure chelates metal ions to prevent corrosion in industrial equipment. HTS 2933.99.82.20 specifically covers this aromatic heterocyclic corrosion inhibitor.
Technical Tolyltriazole 99% Powder
High-purity tolyltriazole powder (99%, CAS 29385-43-1) used in water treatment as copper corrosion inhibitor. This aromatic triazole derivative meets Chapter 29 note requirements for chemically defined organic compounds. Specifically enumerated under HTS 2933.99.82.20.
Tolyltriazole Flake Form TTA-99
Tolyltriazole flakes (TTA-99, CAS 29385-43-1) designed for easy dissolution in industrial formulations. Used extensively in closed-loop cooling water systems to protect copper alloys. Falls under HTS 2933.99.82.20 as the specific tolyltriazole compound with permitted stabilizer per chapter note (f).
Industrial Grade Tolyltriazole TTA
Industrial tolyltriazole (CAS 29385-43-1) with anti-dusting agent for safe handling in manufacturing. Provides copper protection in heat exchangers and HVAC systems. HTS 2933.99.82.20 classification per chapter note (g) allows identification additives.