Citric Acid raw Powder Citric Acid Anhydrous

CAS:77-92-9

MF:C6H8O7

MW:192.12

EINECS:201-069-1

Specification​: 99% min Citric Acid

Sample:Citric Acid Powder

Packaging:1kg/bag, 25kg/drum

Brand: Raw Materials

Appearance:white

Storage: Cool Dry Place

Shelf Life: 2 Years

Test Method: HPLC

Citric Acid Usage and Synthesis.

Citric acid reacts with sodium carbonate or sodium bicarbonate aqueous solution to produce a large amount of CO2 (i.e., effervescence) and sodium citrate, which can dissolve the active ingredients in the drug quickly and enhance the taste ability. For example, it can solubilize laxatives and analgesics. Citric acid syrup is a refreshing drink for patients with fever, which has the effects of flavor correction, cooling, and detoxification.

Citric acid is widely used in various nutritional oral liquids, etc., buffering pH 3.5-4.5, maintaining the stability of active ingredients, and enhancing the effect of preservatives. Citric acid is used in combination with fruit flavors to give people a favorite fragrant and sour taste to cover the bitter taste of the drug, especially Chinese medicine preparations. Adding 0.02% citric acid to the liquid ingredients can form trace iron and copper complexes, delaying the degradation of active ingredients. Using 0.1%-0.2% citric acid in chewable tablets can improve the flavor of the tablets and make them have a lemon flavor.

Uses of Citric Acid.

Citric acid is the most versatile and widely used acidulant. It has high solubility and strong chelating ability for metal ions. It can be used in various foods and used in appropriate amounts according to production needs. In addition, this product can also be used as an antioxidant enhancer, a synergist for compound potato starch bleaching agents and a preservative.

It is widely used as an acidulant and drug additive for food and beverages. It can also be used as a raw material and additive for cosmetics, metal cleaners, mordants, non-toxic plasticizers and boiler antiscalants. Its main salt products include sodium citrate, calcium and ammonium salts. Sodium citrate is a blood anticoagulant, and ammonium ferric citrate can be used as a blood tonic.

It is used as an experimental reagent, chromatographic analysis reagent and biochemical reagent, and is also used in the preparation of buffer solutions. It is used in the food industry, especially as an acidulant, PH buffer, and as a preservative together with other compounds. In the detergent industry, it is an ideal substitute for phosphates. Boiler chemical cleaning pickling agent, boiler chemical cleaning rinsing agent.

Pharmacological Action of Citric Acid.

Product Method of Citric Acid.

It is mainly produced by fermentation, and its raw materials can be carbohydrates such as molasses, sucrose, sweet potatoes and petroleum hydrocarbons.

Generally, fungi are used as the strain for fermentation production. According to the fermentation method, it can be divided into two categories: surface fermentation and deep fermentation. Surface fermentation is an early production method, using certain Penicillium or Aspergillus niger as the strain; deep fermentation method also uses Aspergillus niger as the strain. During the fermentation process, small spherical mycelial aggregates are generated, and the formation of long and thin mycelial bodies should be avoided. The fermentation conditions are pH 1.5-2.8, and sterile air needs to be introduced and stirred. After the fermentation is completed, the mycelial bodies and residual solid residues are filtered out, and the filtrate is neutralized with calcium carbonate to obtain calcium citrate, and then neutralized with concentrated sulfuric acid to obtain crude citric acid, and then refined, concentrated and crystallized by ion exchange resin to obtain the finished product. Deep fermentation is the main method, accounting for about 80% of the fermentation output.