# Gypsum and Phosphoric acid

Their prices have moved together.

Source page: https://www.materialinsights.org/links/gypsum-and-phosphoric-acid/

[Gypsum](https://www.materialinsights.org/commodities/gypsum/) (commodity) and [Phosphoric acid](https://www.materialinsights.org/chemicals/phosphoric_acid/) (chemical): 1 relationship.

## How they are linked

### 1. Price link: by-product

*Cost and price · Weak · Both ways*

Wet-process phosphoric acid leaves large stacks of phosphogypsum, mostly unused because of impurities and slight radioactivity. Its link with the gypsum index is weak, monthly moves at 0.01 and yearly moves at 0.27, since little phosphogypsum reaches wallboard or cement.

- **0.01** monthly change correlation
- **0.27** 12-month change correlation
- **0.47** fitted elasticity

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