Citric acid is a weak organic acid found in citrus fruits. It is a natural preservative and is also used to add an acidic (sour) taste to foods and soft drinks. In biochemistry, it is important as an intermediate in the citric acid cycle and therefore occurs in the metabolism of almost all living things.
Item Number CI132
Item Citric Acid, Monohydrate, Granular
CAS Number 5949-29-1
Molecular Formula C6H8O7 .H2O
Molecular Weight 210.14
Synonyms 2-Hydroxy-1,2,3-propanetricarboxylic Acid
ASSAY (ANHYDROUS BASIS) 99.5 100.5 %
CLARITY OF SOLUTION LESS THAN STANDARD SUSPENSION A
COLOR OF SOLUTION LESS THAN STANDARD SOLUTIONS A,B,C,
WATER DETERMINATION 7.5 9.0 %
RESIDUE ON IGNITION 0.1 %
READILY CARBONIZABLE SUBSTANCES LESS THAN MATCHING FLUID K
SULFATE 0.015 %
ELEMENTAL IMPURITIES AS REPORTED
OXALIC ACID 0.036 % IDENTIFICATION SPECTRUM MATCHES REFER
RESIDUAL SOLVENTS AS REPORTED
Citric acid has a number of uses and is most commonly used as a food additive and a flavoring agent. It is used to flavor and preserve food and beverages. It is also used to make certain varieties of candies due to its sour taste. While buying sour candies, we often find them being covered with a white powder, which is nothing but citric acid. Some brands of ice cream use citric acid, as it acts as an emulsifier and helps in keeping fat globules away.
It is used in canning fruits like apples, apricots, pears, and peaches. It is specially useful in canning of low acidic fruits. It raises the pH level which is really helpful in stopping Botulism from occurring in the canned products. Using citric acid during canning is very essential as Botulism is a deadly organism. There are several jams and fruit preserves where citric acid is used, besides in concentrates and stock cubes.
It has the capacity to break down proteins available in meats and as such is mixed with meat to make it soft and tender. Moreover, it is also used during the manufacturing process of cheese, as it helps in clotting milk faster. It is also used in the production of sourdough breads like rye bread.
Many all-natural household cleaners, such as kitchen and bathroom sprays, contain a small percentage of citric acid to help clean hard water stains and kitchen messes. The citrusy smell of the acid is pleasant, so it works well as both a cleaner and a deodorizer. A common household use of lemon juice is to use it to clean hard water and mineral deposits from shower doors, sinks and toilets.
In the wine-making process, if the fruits do not contain high citric acid content, it is artificially added so as to make it sour. Such a process is mostly used to produce inexpensive wines.
Citric acid is a relatively common ingredient used in cosmetics products to balance the pH levels. According to CosmeticsDatabase.com, small amounts of citric acid can be found in shampoos, body wash, face cleansers, nail polish, hand soap and other cosmetics products. Some people may be sensitive to citric acid, so use caution when applying a cosmetic product containing the acid.
Today, it is also used in making beauty products and is mixed with sodium bicarbonate to make bath tablets and bath fizzes. Moreover, they are also used in some lotions and skin masks. It acts as an antioxidant which helps in refreshing skin, thereby, preventing the skin from sagging and making you look old. In addition to that, it has properties to destroy free radicals and promote skin growth.
Moreover, it is also used along with shampoo to wash coloring agents from hair. However, if you think of using citric acid for washing hair, make sure that you use very small quantities, as it may be harmful for hair if used in large quantities.
One of the common uses is in preparation of kitchen and bathroom cleaning agents. If you don’t want to scrub glass to remove water stains, you can opt to use a solution of citric acid and just wipe it, the stain would clear immediately.
Industrial uses of citric acids are many and it is mainly used in algicides, animal feed, circuit boards, enhanced oil recovery, fertilizer micronutrients, pet food, etc. It is hard to picture but apart from kitchens it is also used in industries such as paint, paper, pharmaceuticals, textiles, etc.
Citric acid’s chemical properties as a weak organic acid make it a powerful water softener. It works by breaking down the trace amounts of metal found in water, making it an ideal all-natural choice for treating hard water.
Applying a 10 percent pharmaceutical-grade citric acid to discolored carpeting can help to remove stains, according to the CarpetBuyersHandbook.com. In fact, many carpet cleaning companies use this very solution for cleaning carpets in homes and businesses.