Phosphoric Acid Metal Pickler
A gel-formulation phosphoric acid pickler for rust conversion and surface preparation on ferrous metals. HTS 3810.90.5000 classification applies to this metal surface pickling preparation, ideal for on-site maintenance without fuming issues. Contains inhibitors for flash rust prevention.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as pure phosphoric acid solution >85% concentration
Unformulated phosphoric acid is an inorganic acid in Chapter 28.
If marketed primarily as rust converter paint rather than pickler
Surface treatment preparations for painting classify under Chapter 34.
If for chemical reaction catalysts, not surface cleaning
Preparations for chemical processing exclude metal surface treatments.
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Import Tips & Compliance
• pH verification (typically <2.0) confirms pickling classification vs general cleaners
• Gel viscosity specs prevent liquid acid reclassification under 2809.20
• Include flash rust inhibitor certificates for automotive/marine approvals
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