Calcium Nitrate Tetrahydrate
Calcium nitrate tetrahydrate (Ca(NO3)2·4H2O) is an inorganic nitrate salt under HTS 2834.29.51.00 for other nitrates. Widely used in agriculture as a water-soluble fertilizer and concrete set accelerator.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold as nitrophosphate fertilizer
Chapter 31 takes precedence for products expressly for agricultural use per exclusion notes.
If when containing calcium carbonate admixtures
Peroxocarbonates and carbonates of inorganic bases classify under heading 2836.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Test for water content to confirm tetrahydrate form vs anhydrous for accurate molecular weight declarations
• Provide fertilizer registration numbers if applicable to facilitate agricultural entry
• Avoid bulk packaging contamination that could trigger mixture classification under 3824
Related Products under HTS 2834.29.51.00
Sodium Nitrate Crystals
Sodium nitrate (NaNO3) is a white crystalline inorganic salt classified under HTS 2834.29.51.00 as a nitrate of an inorganic base other than those specified elsewhere. It is commonly used in fertilizers, pyrotechnics, and as a food preservative.
Potassium Nitrate Powder
Potassium nitrate (KNO3), also known as saltpeter, is an inorganic nitrate salt under HTS 2834.29.51.00 for nitrates other than specified types. It serves as an oxidizer in gunpowder, fireworks, and toothpaste formulations.
Barium Nitrate Granules
Barium nitrate (Ba(NO3)2) is a chemically defined inorganic nitrate classified in HTS 2834.29.51.00 as other nitrates. Primarily used in pyrotechnics for green flame production and in glass manufacturing.
Strontium Nitrate Crystals
Strontium nitrate (Sr(NO3)2) is a white crystalline nitrate salt classified under HTS 2834.29.51.00 as other nitrates. Used in fireworks for red flame color and in tracer bullets.
Lithium Nitrate Solution 50%
50% aqueous lithium nitrate (LiNO3) solution qualifies under HTS 2834.29.51.00 as chemically defined nitrates in aqueous form. Applied in pyrotechnics, ceramics, and lithium battery electrolytes.
Magnesium Nitrate Hexahydrate
Magnesium nitrate hexahydrate (Mg(NO3)2·6H2O) is an inorganic nitrate under HTS 2834.29.51.00, excluded from Chapter 25 exclusion for nitrates. Used as a catalyst and in fuel additives.