Fertilizers, Chemicals
July 01, 2025
Platts amends three US ammonium sulfate assessment specifications July 1
Platts, part of S&P Global Commodity Insights, has amended the specifications of three US ammonium sulfate price assessments, effective July 1.
The amendments include updates to specifications such as quality, quantity and timing for the assessments to better reflect AS market dynamics in North 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.
The detailed specifications for the affected assessments are as below:
| Current specifications | Updated specifications | |
| Assessment name: | Ammonium Sulfate FOB Twin Cities MN $/st Wkly (FASTB04) | Ammonium Sulfate FOT Twin Cities (FASTB04) |
| Quality: | Granular/premium grade ammonium sulphate | Granular/premium grade ammonium sulphate |
| Quantity: | Minimum 1,500 st | 15-25 st |
| Basis and location: | FOB St. Paul/Minneapolis, Minnesota | FOT St. Paul, Minnesota |
| Timing: | Product to be shipped up to 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 | Updated specifications | |
| Assessment name: | Ammonium Sulfate FOB Cincinnati OH $/st Wkly (FASCI04) | Ammonium Sulfate FOT Cincinnati (FASCI04) |
| Quality: | Granular/premium grade ammonium sulphate | Granular/premium grade ammonium sulphate |
| Quantity: | Minimum 1,500 st | 15-25 st |
| Basis and location: | FOB Cincinnati, Ohio | FOT Cincinnati, Ohio |
| Timing: | Product to be shipped up to 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 | Updated specifications | |
| Assessment name: | Ammonium Sulfate FOB Ottawa/Pekin IL $/st Wkly (FASOB04) | Ammonium Sulfate FOT Ottawa (FASOB04) |
| Quality: | Granular/premium grade ammonium sulphate | Granular/premium grade ammonium sulphate |
| Quantity: | Minimum 1,500 st | 15-25 st |
| Basis and location: | FOB Ottawa/Pekin, Illinois | FOT Ottawa, Illinois |
| Timing: | Product to be shipped up to 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 |
These assessments are currently published in the Fertecon Nitrogen Market Report and/or Fertecon US Report and are also available on Platts Connect.
Platts originally announced the update to the methodology for three Americas ammonium sulfate price assessments on June 3 in a subscriber note available here .
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