Calcium Oxalate
Calcium oxalate monohydrate is an insoluble white powder used in ceramics and as an analytical standard. As a salt of oxalic acid, it is classified under tariff item 2917.11.00 per Chapter 29 Note 5(C)(1), which keeps inorganic salts of organic acids with the parent acid heading.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a salt of a different polycarboxylic acid
Salts of other acyclic polycarboxylic acids are classified under the residual subheading.
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
• Declare the exact hydrate form (monohydrate) to avoid ambiguity in classification
• Provide a safety data sheet as calcium oxalate may pose health risks
• Confirm the end-use (ceramics vs analytical) does not affect classification, as it remains under 2917.11.00
Related Products under Tariff item 2917.11.00
Ammonium Oxalate
Ammonium oxalate, also known as diammonium oxalate, is a salt of oxalic acid used in textile dyeing and as an analytical reagent. As an inorganic salt of an organic acid, it is classified under tariff item 2917.11.00 per Chapter 29 Note 5(C)(1), which directs salts to the heading of the parent organic compound.
Dibutyl Oxalate
Dibutyl oxalate is an ester of oxalic acid used as a plasticizer intermediate and solvent. Per Chapter 29 Note 5(A), esters of acid-function organic compounds are classified with the compound that occurs last in numerical order; since oxalic acid (2917) is the acid component, the ester falls under 2917.11.00.
Diethyl Oxalate
Diethyl oxalate is the ethyl ester of oxalic acid, used in pharmaceutical synthesis and dye manufacturing. As an ester of oxalic acid, it is classified under tariff item 2917.11.00 per Chapter 29 Note 5(A), which assigns esters to the heading of the acid component when it occurs last in numerical order.
Dimethyl Oxalate
Dimethyl oxalate is the dimethyl ester of oxalic acid, used as a solvent and chemical intermediate. It falls under tariff item 2917.11.00 as an ester of oxalic acid, per Chapter 29 Note 5(A) which classifies esters with the acid component's heading.
Dipotassium Oxalate
Dipotassium oxalate is a potassium salt of oxalic acid used in laboratory analysis and as a precipitating agent. As an inorganic salt of an organic acid, it is classified under tariff item 2917.11.00 per Chapter 29 Note 5(C)(1), which keeps salts with the parent acid heading.
Disodium Oxalate
Disodium oxalate is the anhydrous sodium salt of oxalic acid, used in water treatment and as a calibration standard. It is classified under tariff item 2917.11.00 per Chapter 29 Note 5(C)(1), which directs inorganic salts of organic acids to the heading of the parent acid.