Common Organic Acids and Their Uses in Various Industries

Citric acid, lactic acid, salicylic acid, and tartaric acid are natural acids found in various fruits. They have diverse applications in food and beverage, pharmaceutical, and cosmetic industries. These acids are used for flavoring, cleaning, as food additives, and in the preparation of various products like aspirin and cough syrup. Each acid offers unique properties and benefits in different industrial sectors.

• Organic Acids
• Food Additives
• Pharmaceutical Industry
• Cosmetic Ingredients

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1. 1. Citric acid CH2COOH-C(OH)COOH-CH2COOH Occur naturally from citrus fruits lemon, orange, lime MF: C6H8O7; MM: 192 g/m; MP: 156 0C IUPAC: 2-hydroxy-propane-1,2,3-tricarboxylic acid Uses: as an edible acids -in soft drinks, candies -cleaning agent and chelating agents (sodium citrate is preferred) -dietary supplements -As an alternative to vinegar

2. 2. LACTIC ACID (Milk acid) CH3CH(OH)COOH 2isomers: [D Lactic acid and L+ lactic acid in muscle] MF: C3H6O3 ; MM 90.01 g/m; MP: 18 0C Produced in muscles and in RBC, Carbohydrate breakdown in to lactic acid during metabolism Uses: keratolytic and disinfectant As a cleaning agent As a food additives Dish detergent (anti bacterial agent) Preparation of ester/also salts

3. 3. Salicylic acid:. Salicylic acid belongs to a class of drugs known as salicylates. When applied to the skin, salicylic acid may work by helping the skin to shed dead cells ... MF: C7H6O3; MM: 138.122 g/m ; MP: 159 0C IUPAC: 2-Hydroxy benzoic acid USES: Preparation of aspirin (Acetyl salicylic acid), methyl salicylate (Oil of winter green) As a local anesthetic agent (in pain balm) As a antifungal agent to treat ring worm, and in psoriasis, in dandruff (as a shampoo) As a keratolytic agent

4. 4. TARTARIC ACID Naturally found in banana, grapes, tamarind etc. MF: C4 H6 O6 ; MM:150.087 g/m; MP:169 0C IUPAC: 2,3-DIHYDROXY BUTANE 1,4-DIOIC ACID USES: Preparation of efferervessent tablets, In cough syrup as expectorant (sodium salt is used) Tartar emetic as (sodium potassium tartrate) Cleaning agent, Chelating agent