# Dyes and Sulphuric acid

Their prices have moved together.

Source page: https://www.materialinsights.org/links/dyes-and-sulphuric-acid/

[Dyes](https://www.materialinsights.org/chemicals/dyes/) (chemical) and [Sulphuric acid](https://www.materialinsights.org/chemicals/sulphuric_acid/) (chemical): 1 relationship.

## How they are linked

### 1. Price link: sulphonation reagent

*Cost and price · Moderate · Both ways*

Dye intermediates such as H-acid and vinyl sulphone need large amounts of sulphuric acid and oleum. The acid index correlates weakly with dyes, at 0.07 monthly and 0.33 yearly, as acid is a small part of dye cost.

- **0.07** monthly change correlation
- **0.33** 12-month change correlation
- **0.28** fitted elasticity

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