# Ammonium sulphate and Urea

Their prices have moved together.

Source page: https://www.materialinsights.org/links/ammonium-sulphate-and-urea/

[Ammonium sulphate](https://www.materialinsights.org/chemicals/ammonium_sulphate/) (chemical) and [Urea](https://www.materialinsights.org/chemicals/urea/) (chemical): 1 relationship.

## How they are linked

### 1. Price link: substitute

*Cost and price · Strong · Both ways*

Farmers compare nitrogen fertilisers per unit of nitrogen, so urea sets a ceiling on ammonium sulphate, which earns a premium where soils need sulphur. Middle East urea moves with the proxy at 0.27 monthly and 0.82 yearly.

- **0.27** monthly change correlation
- **0.82** 12-month change correlation
- **0.61** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.