Salts and esters of tartaric acid (HS 291813)
Salts and esters of tartaric acid (HS 291813) has 621 U.S. import bill-of-lading shipment records between Jan 2020 and Jul 2026. The largest U.S. importer of Salts and esters of tartaric acid is TORRENT PHARMA INC, with 77 shipments, followed by GLANBIA NUTRITIONALS NA INC and GC CHEMICALS CORP. The leading supplier is LONZA GUANGHZOU PHARMACEUTICAL LTD, with 102 shipments, followed by LONZA GUANGZHOU NANSHA LTD and TORRENT PHARMACEUTICALS LIMITED. Goods originate mainly from CHINA and INDIA, arriving primarily at NEW YORK/NEWARK AREA, NEWARK, NJ. Import volume has held steady over the past 12 months versus the prior year.
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through July 2026
Shipments over time (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 LONZA GUANGHZOU PHARMACEUTICAL LTD → GLANBIA NUTRITIONALS NA INC with 44 shipments, followed by TORRENT PHARMACEUTICALS LIMITED → TORRENT PHARMA INC (41) and TORRENT PHARMACEUTICALS LTD → TORRENT PHARMA INC (36).
Top U.S. importers
| Importer | Shipments |
|---|---|
| TORRENT PHARMA INC | 77 |
| GLANBIA NUTRITIONALS NA INC | 61 |
| GC CHEMICALS CORP | 49 |
| AMERICAN TARTARIC PRODUCTS INC | 29 |
| GLANBIA NUTRITIONALS N A INC | 29 |
Top suppliers
| Supplier | Shipments |
|---|---|
| LONZA GUANGHZOU PHARMACEUTICAL LTD | 102 |
| LONZA GUANGZHOU NANSHA LTD | 45 |
| TORRENT PHARMACEUTICALS LIMITED | 41 |
| TORRENT PHARMACEUTICALS LTD | 36 |
| TARTAROS GONZALO CASTELLO SL | 34 |
Origin countries
| Country | Shipments |
|---|---|
| CHINA | 252 |
| INDIA | 169 |
| SPAIN | 73 |
| BRAZIL | 29 |
| ITALY | 28 |
| FRANCE | 18 |
| BELGIUM | 9 |
| REPUBLIC OF KOREA | 6 |
| NETHERLANDS | 6 |
| HONG KONG | 4 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| NEW YORK/NEWARK AREA, NEWARK, NJ | 177 |
| NORFOLK, VA | 119 |
| LONG BEACH, CA | 99 |
| LOS ANGELES, CA | 78 |
| SAVANNAH, GA | 47 |
| CHARLESTON, SC | 23 |
| NEW YORK, NY | 17 |
| OAKLAND, CA | 13 |
| TACOMA, WA | 9 |
| MIAMI, FL | 9 |
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.
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, AMERICAN TARTARIC PRODUCTS INC, and GLANBIA NUTRITIONALS N A 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 77 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, LONZA GUANGZHOU NANSHA LTD, TORRENT PHARMACEUTICALS LIMITED, TORRENT PHARMACEUTICALS LTD, and TARTAROS GONZALO CASTELLO SL.
How many U.S. shipments of Salts and esters of tartaric acid are there?
ImportDoor has 621 U.S. import shipment records under HS code 291813, spanning Jan 2020 to Jul 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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