Table 9.
Order | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
---|---|---|---|---|---|---|
1st | Ammonia | Ammonia | Hydrochloric acid | Ammonia | Nitric acid | Sulfuric acid |
2nd | Nitric acid | Hydrochloric acid | Sulfuric acid | Sulfuric acid | Hydrochloric acid | Ammonia |
3rd | Hydrochloric acid | Nitric acid | Nitric acid | Hydrochloric acid | Ammonia | Hydrochloric acid |
4th | Sulfuric acid | Sulfuric acid | Sodium Hydroxide | Nitric acid | Sulfuric acid | Nitric acid |
5th | Chlorine | Hydrogen peroxide | Toluene | Hydrogen peroxide | Sodium Hydroxide | Toluene |