Fertilizers, Chemicals, Energy Transition, Renewables
June 02, 2025
Platts to update Americas ammonium thiosulfate price assessment methodology
Platts, part of S&P Global Commodity Insights, will update the specifications of three Americas ammonium thiosulfate price assessments effective July 3, 2025.
The amendments will include the introduction of a new "close" value, and amendments to specifications such as quantity and timing to better reflect the dynamics of the nitrates market activity in the Americas region. Following the change, the low and high elements of the assessment will be standardized to $1/st above and below the assessed close value.
The basis and location specification of these assessments will be refined to bring more transparency to the characteristics of these price assessments. In addition, the timing specification of these assessments will also be refined to better reflect the market dynamics of each location.
The adjustments and clarified specifications of the weekly assessment are detailed below:
| Current specifications | Updated specifications | |
| Assessment name | Ammonium Thiosulfate FOB Coffeyville KS $/st Wkly (FATCB04) | Ammonium Thiosulfate FOT Coffeyville (FATCB04) |
| Quality: | Liquid Ammonium Thiosulphate (NPKs 12-0-0-26) | Liquid Ammonium Thiosulphate (NPKs 12-0-0-26) |
| Quantity: | 15-25 st | 15 st |
| Basis and location: | FOB Coffeeville, Kansas | FOT Coffeeville, Kansas |
| Timing: | Product to be loaded within 30 days forward | Loading from 1 to 30 days from the date of publication |
| Frequency: | Weekly, every Thursday | Weekly, every Thursday |
| Unit of assessment: | $/st | $/st |
| Timestamp: | 4:30 pm São Paulo, published according to the São Paulo publishing calendar | 16:30 São Paulo, published according to the São Paulo publishing calendar |
| Current specifications | Updated specifications | |
| Assessment name | Ammonium Thiosulfate FOB Stockton CA $/st Wkly (FATSB04) | Ammonium Thiosulfate FOT Stockton (FATSB04) |
| Quality: | Liquid Ammonium Thiosulphate (NPKs 12-0-0-26) | Liquid Ammonium Thiosulphate (NPKs 12-0-0-26) |
| Quantity: | 15-25 st | 15 st |
| Basis and location: | FOB Stockton, California | FOT Stockton, California |
| Timing: | Product to be loaded within 30 days forward | Loading from 1 to 30 days from date of publication |
| Frequency: | Weekly, every Thursday | 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 | 16:30 São Paulo, published according to the São Paulo publishing calendar |
| Current specifications | Updated specifications | |
| Assessment name | Ammonium Thiosulfate FOB US Pacific Northwest $/st Wkly (FATSQ04) | Ammonium Thiosulfate FOT US Pacific Northwest (FATSQ04) |
| Quality: | Liquid Ammonium Thiosulphate (NPKs 12-0-0-26) | Liquid Ammonium Thiosulphate (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 from 1 to 30 days from date of publication |
| Frequency: | Weekly, every Thursday | 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 | 16:30 São Paulo, published according to the São Paulo publishing calendar |
These assessments are currently published in the US Fertilizer Report and are also available on Platts Connect.
Platts originally proposed to update the specifications of three Americas ammonium thiosulfate price assessments of May 13 in a subscriber note available here(opens in a new tab).
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