Fertilizers, Chemicals, Energy Transition, Renewables
July 01, 2025
Platts amends US ammonium thiosulfate assessment specifications July 1
Platts, part of S&P Global Commodity Insights, has amended the specifications of three Americas ammonium thiosulfate price assessments, effective July 1, 2025.
The amendments include updates to specifications such as quality, quantity, and timing for the assessments to better reflect nitrates market dynamics in America.
Following the change, the price will be assessed as a single-number "close" value, along with low and high values standardized to $1/st above and below the assessed close value.
Detailed specifications for the affected assessments are as follows:
| Current specifications | Updated specifications | |
| Assessment name | Ammonium Thiosulfate FOT Coffeyville KS $/st Wkly (FATCB04) | Ammonium Thiosulfate FOT Coffeyville (FATCB04) |
| Quality: | Liquid Ammonium Thiosulfate (NPKs 12-0-0-26) | Liquid Ammonium Thiosulfate (NPKs 12-0-0-26) |
| Quantity: | 15-25 st | 15 st |
| Basis and location: | FOT Coffeeville, Kansas | FOT Coffeeville, Kansas |
| Timing: | Product to be loaded within 30 days forward | Loading 1-30 days forward from the date of publication |
| Frequency: | Weekly | Weekly, every Thursday |
| Appears in: | US Fertilizer Report | US Fertilizer Report |
| Unit of assessment: | $/st | $/st |
| Timestamp: | 4:30 pm São Paulo, published according to the São Paulo publishing calendar | 16h30 São Paulo, published according to the São Paulo publishing calendar |
| Current specifications | Proposed specifications | |
| Assessment name | Ammonium Thiosulfate FOT Stockton CA $/st Wkly (FATSB04) | Ammonium Thiosulfate FOT Stockton (FATSB04) |
| Quality: | Liquid Ammonium Thiosulfate (NPKs 12-0-0-26) | Liquid Ammonium Thiosulfate (NPKs 12-0-0-26) |
| Quantity: | 15-25 st | 15 st |
| Basis and location: | FOT Stockton, California | FOT Stockton, California |
| Timing: | Product to be loaded within 30 days forward | Loading 1-30 days forward from the date of publication |
| Frequency: | Weekly | Weekly, every Thursday |
| Appears in: | US Fertilizer Report | US Fertilizer Report |
| Unit of assessment: | $/st | $/st |
| Timestamp: | 4:30 pm São Paulo, published according to the São Paulo publishing calendar | 16h30 São Paulo, published according to the São Paulo publishing calendar |
| Current specifications | Proposed specifications | |
| Assessment name | Ammonium Thiosulfate FOT US Pacific Northwest $/st Wkly (FATSQ04) | Ammonium Thiosulfate FOT US Pacific Northwest (FATSQ04) |
| Quality: | Liquid Ammonium Thiosulfate (NPKs 12-0-0-26) | Liquid Ammonium Thiosulfate (NPKs 12-0-0-26) |
| Quantity: | 15-25 st | 15 st |
| Basis and location: | FOT Washington and Oregon | FOT Pasco, Washington |
| Timing: | Product to be loaded within 30 days forward | Loading 1-30 days forward from date of publication |
| Frequency: | Weekly | Weekly, every Thursday |
| Appears in: | US Fertilizer Report | US Fertilizer Report |
| Unit of assessment: | $/st | $/st |
| Timestamp: | 4:30 pm São Paulo, published according to the São Paulo publishing calendar | 16h30 São Paulo, published according to the São Paulo publishing calendar |
Platts wishes to clarify that all the above assessments are assessed and will continue to be assessed on an FOT basis.
These assessments are currently published in the US Fertilizer Report and are also available on Platts Connect.
Platts originally announced the update on the specifications of three Americas ammonium thiosulfate price assessments in a June 2 subscriber note.
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