free chlorine
Subject: CHEM / Chemical elements & compounds
| Language | Term |
| Arabic - AR | كلور حر |
| DE - German | freies Chlor |
| EN - English | free chlorine |
| ES - Spanish | cloro libre |
| FR - French | chlore libre |
| JA - Japanese | 遊離塩素 |
| KO - Korean | 유리염소 |
| PT - Portuguese | cloro livre |
| RU - Russian | свободный хлор |
| ZH - Chinese | 游离氯 |