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Sodium carbonate (washing soda) and LABSA (linear alkylbenzene sulfonic acid) are common ingredients in detergents. LABSA acts as a surfactant, while sodium carbonate is an alkali that helps to remove grease and dirt. Tap water is used as a solvent. The pH of the detergent will depend on the specific ratio of ingredients, but it will be alkaline for effective cleaning. You can adjust the pH by adding a small amount of acid (e.g., citric acid) or base (e.g., sodium hydroxide).