Citric Acid

Citric Acid Monohydrate
Citric Acid Dihydrate
Citri Acid Anhydrous
C₆H₈O₇
CAS:77-92-9
EINECS:201-069-1

Citric acid (CA),also known as citric acid,with the molecular formula of C₆H₈O₇,is an important organic acid,which is colorless crystal,odorless,has a strong sour taste,and is easily soluble in water.It is an acidity regulator (GB2760-2014) and a food additive.

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Citric Acid

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Introduction

DESCRIPTION

Product Parameters

English Name:	Citric Acid	Chemical Formula:	C₆H₈O₇
CAS:	77-92-9	EINECS:	201-069-1
Molecular Weight:	192.13	Density：	1.542 g/cm³
Melting Point:	153—159℃	Boiling Point：	175 ℃
Flash Point：	155.2 ℃	Hazard Symbol：	R36/37/38
Security Description：	S26;S39;S37/39;S24/25;S36/37/39;S45	Hazard Description：	Xi

Product Packaging

Product Application

Textile Industry	Maquillage
Food Industry	Pharmaceutical Industry

1.Food Industry
Citric acid is the largest organic acid produced by biochemical methods in the world.Citric acid and salts are one of the pillar products of fermentation industry,mainly used in the food industry,such as acid flavor agent,solvent,buffer,antioxidant,deodorant,flavor enhancer,gelling agent,toner,etc.
In terms of food additives,it is mainly used in carbonated drinks,fruit juice drinks,lactic acid drinks and other cool drinks and pickled products,and its demand varies with the change of seasonal climate.Citric acid accounts for about 2/3 of the total consumption of the acid flavor agent.The addition of citric acid to canned fruits preserves or improves the flavor of fruits,increases the acidity of certain fruits with low acidity in canning (reduces pH),reduces the thermal resistance of microorganisms and inhibits their growth,and prevents bacterial canning and destruction that often occurs in canned fruits with low acidity.The addition of citric acid as a sour flavor agent in candy is easy to harmonize with the fruit flavor.The use of citric acid in gel food such as sauce and jelly can effectively reduce the negative charge of pectin,so that the hydrogen bond between pectin molecules to gel.In the processing of canned vegetables,some vegetables are alkaline reaction,with citric acid as pH adjustment agent,not only can play the role of seasoning,but also can maintain its quality.Citric acid has the properties of chelating and regulating pH value,which can increase the performance of antioxidant,inhibit enzyme activity and prolong the shelf life of food in the processing of frozen food.
2.Metal Cleaning
Citric acid is an organic acid produced by microbial fermentation.It is widely used in detergent production.Its specificity and chelation play an active role.Citric acid in the actual use of the process,has a good performance,mainly in the safety is more prominent, the preparation of citric acid raw materials are from food,which is a safe food grade microorganism.The use of citric acid has no impact on the environment,and it is easy to degrade under the action of microorganisms and heat.Its chelating ability is also relatively strong.Mainly,citrate has a strong chelating ability on manganese ion and iron ion,and the use effect is also relatively outstanding.Corrosion inhibition of citric acid in detergent is also more prominent,pickling as a more important link in chemical cleaning,and inorganic acid compared,the acidity of citric acid is relatively weak,so the corrosion of equipment is also relatively small,the safety and reliability of citric acid cleaning is relatively strong, waste liquid is also relatively easy to deal with,will not cause harm to the human body.
3.Fine Chemical Industry
Citric acid is a kind of fruit acid,the main function is to accelerate the keratin renewal,often used in lotion,cream,shampoo,whitening products,anti-aging products,acne products,etc. Citric acid in chemical technology can be used as chemical analysis reagent,used as experimental reagent,chromatographic analysis reagent and biochemical reagent;Used as complexing agent,masking agent;Used to prepare buffer solutions.The use of citric acid or citrate as washing aid can improve the performance of washing products,can quickly precipitate metal ions,prevent pollutants from reattaching to the fabric,keep the necessary alkaline washing;To disperse and suspend dirt and ash;Improve the performance of surfactant, is a good chelating agent;It can be used as a reagent to test the acid resistance of building ceramic tiles.Citric acid - sodium citrate buffer is used for flue gas desulfurization.Our abundant coal resources constitute the main part of energy,but the lack of effective flue gas desulfurization process,which leads to the serious pollution of air SO2.Citric acid-sodium citrate buffer solution is a valuable desulfurizing absorbent due to its low vapor,non-toxic,stable chemical properties and high absorption rate of SO2.
4.Sterilization and Coagulation Process
The combination of citric acid and 80℃ has a good effect on killing bacterial spores,and can effectively kill the contaminated bacterial spores in the pipe of hemodialysis machine. Calcium ions must be involved in the formation of prothrombin activators and subsequent coagulation.Citrate ions and calcium ions can form a soluble complex which is difficult to dissociate,thus reducing the concentration of calcium ions in the blood and preventing blood coagulation.

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