D(-)-Tartaric Acid
D(-)-Tartaric acid is the D-enantiomer of tartaric acid, a chemically defined organic compound with the same molecular structure as L-tartaric acid but opposite optical rotation. Under Chapter 29 Note 1(a), separate chemically defined organic compounds are covered, so it classifies under tariff item 2918.12.00. It is used in the resolution of racemic mixtures and specialty synthesis.
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 enantiomer is not recognized as tartaric acid
Other carboxylic acids with alcohol function may apply if the product is considered a derivative.
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 optical purity and specific rotation on the shipping documents to confirm the enantiomer identity
• Ensure the product is labeled as D(-)-tartaric acid to avoid confusion with the L-form
• Verify if any import permits are needed for specialty chemical use
Related Products under Tariff item 2918.12.00
Diethyl L-Tartrate
Diethyl L-tartrate is the ethyl ester of L-tartaric acid. Under Chapter 29 Note 5(B), esters of ethyl alcohol with acid-function organic compounds are classified in the same heading as the corresponding acid, so this product falls under tariff item 2918.12.00 as tartaric acid. It is used as a chiral auxiliary in organic synthesis.
DL-Tartaric Acid (Racemic)
DL-Tartaric acid is the racemic mixture of D- and L-tartaric acid, a chemically defined organic compound with two hydroxyl groups and two carboxyl groups. Under Chapter 29 Note 1(b), mixtures of isomers of the same organic compound are covered, so it classifies under tariff item 2918.12.00. It is used in pharmaceuticals and as a chiral resolving agent.
Food-Grade Tartaric Acid USP
Food-grade tartaric acid meeting USP standards is a pure, chemically defined compound with two hydroxyl and two carboxyl groups. Under Chapter 29 Note 1(a), it classifies under tariff item 2918.12.00 as tartaric acid. It is widely used as an acidulant in beverages, candies, and other food products.
L(+)-Tartaric Acid
L(+)-Tartaric acid is the naturally occurring enantiomer of tartaric acid, a dicarboxylic acid with two hydroxyl groups. Under Chapter 29 Note 1(a), it is a separate chemically defined organic compound, classifying under tariff item 2918.12.00. It is used in food, pharmaceuticals, and as a chiral building block.
Monohydrate Tartaric Acid Crystals
Tartaric acid monohydrate is a crystalline form of tartaric acid with one water molecule per molecule of tartaric acid. Under Chapter 29 Note 1(d), products dissolved in water are covered, so this hydrate classifies under tariff item 2918.12.00. It is used in effervescent formulations and as a buffer.
Natural Tartaric Acid from Wine Lees
Natural tartaric acid extracted from wine lees is chemically identical to synthetic tartaric acid, with the same molecular structure. Under Chapter 29 Note 1(a), the origin does not affect classification, so it falls under tariff item 2918.12.00. It is preferred for organic certification and natural product applications.