# Caustic soda and PVC

Their prices have moved together.

Source page: https://www.materialinsights.org/links/caustic-soda-and-pvc/

[Caustic soda](https://www.materialinsights.org/chemicals/caustic_soda/) (chemical) and [PVC](https://www.materialinsights.org/chemicals/pvc/) (chemical): 1 relationship.

## How they are linked

### 1. Price link: co-product demand

*Cost and price · Weak · Both ways*

Most chlorine goes into PVC, so strong PVC demand raises chlorine output and the caustic soda that comes with it. The PVC proxy is a broad plastics index; monthly moves correlate at 0.08 and yearly moves at 0.08.

- **0.08** monthly change correlation
- **0.08** 12-month change correlation
- **1.01** fitted elasticity

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