Citric acid (CA), also known as citric acid, with the molecular formula C₆H₈O₇, is an important organic acid. It is colorless crystals, odorless, has a strong acid taste, is easily soluble in water, and is a natural preservative and food additive.

Citric acid is not the acid in lemons. Natural citric acid is widely distributed in nature. Natural citric acid is found in the fruits of plants, such as lemons, citrus, pineapples, and animal bones, muscles and blood. Synthetic citric acid is fermented from sugar, molasses, starch, grapes and other sugar-containing substances, and can be divided into anhydrous and hydrates. Pure citric acid is a colorless transparent crystal or white powder, tasteless, and has an attractive sour taste.
Many fruits and vegetables, especially citrus fruits, contain more citric acid, especially lemons and limes. They contain a large amount of citric acid, which can reach 8% after drying (about 47 g/L in juice). . In citrus fruits, the content of citric acid is between 0.005 mol/L citrus and grapes and 0.30 mol/L lemons and limes. The content varies with the growth of different cultivated species and plants.

The role of citric acid

1. Citric acid is very helpful for removing lime, such as washing machines and other household appliances.

2. Polishing

It is very suitable for polishing any surface in the home, but be careful of marble and wood to avoid damage.

3. Anti-blocking agent

You can use citric acid to dredge the pipeline mixed with water and bicarbonate. Bicarbonate is a mixture that must be poured through a pipe for dredging.

4. Fabric softener

Citric acid mixed with water.If there is no peculiar smell on your clothes. You can add a few drops of essential oil. Its use is similar to ordinary fabric softeners.