# Caustic soda and Metal-air batteries

Their prices have moved together.

Source page: https://www.materialinsights.org/links/caustic-soda-and-metal-air-batteries/

[Caustic soda](https://www.materialinsights.org/chemicals/caustic_soda/) (chemical) and [Metal-air batteries](https://www.materialinsights.org/energy/e_metal_air/) (energy): 1 relationship.

## How they are linked

### 1. Price link: electrolyte process

*Cost and price · Moderate · Both ways*

The potassium hydroxide electrolyte is made in chlor-alkali plants, the same process that makes caustic soda. The alkalies proxy shows a modest link, at 0.22 for monthly moves and 0.52 for yearly moves, partly through shared US chemical inflation.

- **0.22** monthly change correlation
- **0.52** 12-month change correlation
- **0.45** fitted elasticity

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