Salts and esters of tartaric acid (HS 291813)
Salts and esters of tartaric acid (HS 291813) has 772 U.S. import bill-of-lading shipment records between Dec 2019 and Aug 2026. The largest U.S. importer of Salts and esters of tartaric acid is TORRENT PHARMA INC, with 129 shipments, followed by GLANBIA NUTRITIONALS NA INC and GC CHEMICALS CORP. The leading supplier is LONZA GUANGHZOU PHARMACEUTICAL LTD, with 132 shipments, followed by TORRENT PHARMACEUTICALS LTD and LONZA GUANGZHOU NANSHA LTD. Goods originate mainly from CHINA and INDIA, arriving primarily at NEW YORK/NEWARK AREA, NEWARK, NJ. Import volume has declined over the past 12 months versus the prior year.
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through August 2026Cite as: ImportDoor, U.S. Customs bill of lading data (data through August 2026), https://www.importdoor.com/products/291813-salts-and-esters-of-tartaric-acid
See all 772 shipments of HS 291813 with dates, ports, consignees, filters and CSV export in the ImportDoor dashboard.
Open in dashboardShipments by month (last 24 months)
Trade flow: top suppliers → U.S. importers
The strongest supplier-importer relationships for Salts and esters of tartaric acid (HS 291813), by shipment volume. Hover a ribbon for details; click a name to open its profile.
The largest relationship is TORRENT PHARMACEUTICALS LTD → TORRENT PHARMA INC with 86 shipments, followed by LONZA GUANGHZOU PHARMACEUTICAL LTD → GLANBIA NUTRITIONALS NA INC (65) and TORRENT PHARMACEUTICALS LIMITED → TORRENT PHARMA INC (42).
Top U.S. importers
| Importer | Shipments |
|---|---|
| TORRENT PHARMA INC | 129 |
| GLANBIA NUTRITIONALS NA INC | 82 |
| GC CHEMICALS CORP | 53 |
| GLANBIA NUTRITIONALS N A INC | 32 |
| AMERICAN TARTARIC PRODUCTS INC | 31 |
| SUN PHARMACEUTICAL INDUSTRIES INC | 27 |
| GREENWOOD SC WAREHOUSE | 19 |
| FIRMENICH INCORPORATED | 16 |
| BAXTER HEALTHCARE CORP | 14 |
| BAXTER HEALTHCARE | 12 |
Top suppliers
| Supplier | Shipments |
|---|---|
| LONZA GUANGHZOU PHARMACEUTICAL LTD | 132 |
| TORRENT PHARMACEUTICALS LTD | 86 |
| LONZA GUANGZHOU NANSHA LTD | 45 |
| TORRENT PHARMACEUTICALS LIMITED | 42 |
| TARTAROS GONZALO CASTELLO SL | 38 |
| SUN PHARMACEUTICAL INDUSTRIES LTD | 22 |
| TARTAROS GONZALO CASTELLO S L | 22 |
| VERONESE INDUSTRIA DE PRODUTOS QUIMICOS LTDA | 18 |
| SHANDONG LUKANG SHELILE PHARMACEUTI | 15 |
| BAXTER PHARMACEUTICALS INDIA PVT | 13 |
Origin countries
| Country | Shipments |
|---|---|
| CHINA | 300 |
| INDIA | 249 |
| SPAIN | 81 |
| ITALY | 30 |
| BRAZIL | 29 |
| FRANCE | 22 |
| BELGIUM | 9 |
| HONG KONG | 8 |
| REPUBLIC OF KOREA | 8 |
| NETHERLANDS | 6 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| NEW YORK/NEWARK AREA, NEWARK, NJ | 207 |
| NORFOLK, VA | 181 |
| LONG BEACH, CA | 117 |
| LOS ANGELES, CA | 95 |
| SAVANNAH, GA | 55 |
| CHARLESTON, SC | 24 |
| OAKLAND, CA | 17 |
| NEW YORK, NY | 16 |
| TACOMA, WA | 14 |
| SEATTLE, WA | 11 |
Harmonized System classification
HS code 291813 — Salts and esters of tartaric acid. The Harmonized System is the international standard for classifying traded goods; U.S. Customs records this 6-digit code on every bill of lading.
Not sure this is the right code? Search all 5,700+ subheadings with the free HS code lookup, or see which product categories are growing in our quarterly State of U.S. Imports reports.
More products under HS 2918
Other six-digit codes in HS 2918: Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids, with their U.S. import volume.
Frequently asked questions about importing Salts and esters of tartaric acid
Who imports Salts and esters of tartaric acid (HS 291813)?
Based on U.S. Customs bill-of-lading records, the top U.S. importers of Salts and esters of tartaric acid include TORRENT PHARMA INC, GLANBIA NUTRITIONALS NA INC, GC CHEMICALS CORP, GLANBIA NUTRITIONALS N A INC, and AMERICAN TARTARIC PRODUCTS INC.
Who is the largest U.S. importer of Salts and esters of tartaric acid?
TORRENT PHARMA INC is the largest U.S. importer of Salts and esters of tartaric acid (HS 291813), with 129 bill-of-lading shipment records.
Who are the top suppliers of Salts and esters of tartaric acid?
Leading suppliers shipping Salts and esters of tartaric acid (HS 291813) to the U.S. include LONZA GUANGHZOU PHARMACEUTICAL LTD, TORRENT PHARMACEUTICALS LTD, LONZA GUANGZHOU NANSHA LTD, TORRENT PHARMACEUTICALS LIMITED, and TARTAROS GONZALO CASTELLO SL.
How many U.S. shipments of Salts and esters of tartaric acid are there?
ImportDoor has 772 U.S. import shipment records under HS code 291813, spanning Dec 2019 to Aug 2026.
Where is Salts and esters of tartaric acid imported from?
Salts and esters of tartaric acid is imported into the U.S. primarily from CHINA, INDIA, and SPAIN.
Find Salts and esters of tartaric acid importers & suppliers
Get the complete list of U.S. importers and global suppliers for HS 291813, with contact details and container-level shipment records on ImportDoor.
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