Sodium Metabisulfite Pickling Acidulant
Sodium metabisulfite generates sulfurous acid in situ for leather pickling operations, acting as an antioxidant and preparing hides for chrome tanning. It is a wholly inorganic substance classified under tariff item 3202.90.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as a general chemical not for tanning
Sodium metabisulfite is a separate chemical compound that may be classified under inorganic chemicals if not for tanning.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document the product's use in leather pre-tanning to support classification
• Ensure the product is not mixed with organic materials
• Check if the product is subject to food-grade standards if used in other applications
Related Products under Tariff item 3202.90.00
Acrylates-Based Synthetic Tanning Drum
Liquid acrylate polymer emulsion used as a chrome-free synthetic tanning agent in drum processing. It is a synthetic organic tanning substance classified under tariff item 3202.90.00 as 'Other'.
Aluminum Isopropoxide Tanning Complex
Aluminum isopropoxide is an organometallic aluminum compound used as a synthetic tanning agent for producing 'wet-white' leather alternatives to chrome tanning. It is classified under tariff item 3202.90.00 as a synthetic organic tanning substance.
Aluminum Sulfate Leather Tanning Salt
Aluminum sulfate is an inorganic tanning substance used in the leather industry, often in combination with chrome salts to produce combination-tanned leathers with enhanced stability. It falls under tariff item 3202.90.00 as an inorganic tanning substance, which is included in the description of the heading.
Ammonium Aluminum Sulfate Tanning Salt
Ammonium aluminum sulfate, also known as alum, is an inorganic tanning agent used to produce vegetable-retanned or combination leathers with a firm texture. It is classified under tariff item 3202.90.00 as an inorganic tanning substance.
Chromium III Sulfate Tanning Agent
Chromium III sulfate is an inorganic tanning substance used in the leather industry to convert animal hides into durable leather through chrome tanning. It is classified under tariff item 3202.90.00 as an inorganic tanning substance.
Chromium Sulfate Tanning Agent
Chromium sulfate is an inorganic compound used as a primary tanning agent to convert raw hides into durable leather by cross-linking collagen fibers. It is classified under tariff item 3202.90.00 as an inorganic tanning substance.