Citric Acid A.R.
(C6H8O7; CAS Number 77-92-9; Molecular Weight 192.12 g/mol) is a widely used acid as a preservative and flavoring agent.
 
It can be found in many household products, including soft drinks and food items. Citric acid is also used in many industrial processes, including metal cleaning and treatment.
 
For more information on the uses of citric acid, please visit the Pubmed link here: https://pubmed.ncbi.nlm.nih.gov/23441906/.