Citric acid

Citric acid Property

mp : 153-159 °C(lit.) density : 1.542 FEMA : 2306 refractive index : 1.493~1.509 Fp : 100 °C storage temp. : Store at RT. solubility : H2O: 1 M at 20 °C, clear, colorless form : grit Water Solubility : 750 g/L (20 ºC) Sensitive : Hygroscopic Merck : 14,2326 BRN : 782061 Stability:: Stable. Incompatible with bases, strong oxidizing agents, reducing agents, metal nitrates. CAS DataBase Reference: 77-92-9(CAS DataBase Reference) NIST Chemistry Reference: 1,2,3-Propanetricarboxylic acid, 2-hydroxy-(77-92-9) EPA Substance Registry System: 1,2,3-Propanetricarboxylic acid, 2-hydroxy-(77-92-9)

Safety

Hazard Codes : Xi,C,T Risk Statements : 41-36/37/38-36/38-37/38-34-36-35-61-60 Safety Statements : 26-39-37/39-24/25-36/37/39-45-36-53 RIDADR : UN 1789 8/PG 3 WGK Germany : 1 RTECS : GE7350000 F : 9 Hazardous Substances Data: 77-92-9(Hazardous Substances Data)

Citric acid Chemical Properties,Usage,Production

Chemical Properties White crystalline powder Usage Citric acid is a weak organic acid that is known as a commodity chemical, as more than a million tonnes are produced every year by mycological fermentation on an industrial scale using crude sugar sol utions, such as molasses and strains of Aspergillus niger. Citric acid is widely distributed in plants and in animal tissues and fluids and exist in greater than grace amounts in variety of fruits and vegetables, most notably in citrus fruits such as lemon and limes. Citric acid is mainly used as an acidifier, flavoring agent and chelating agent. General Description Colorless, odorless crystals with an acid taste. Denser than water. Air & Water Reactions The pure material is moisture sensitive (undergoes slow hydrolysis) Water soluble. Reactivity Profile Citric acid reacts with oxidizing agents, bases, reducing agents and metal nitrates . Reactions with metal nitrates are potentially explosive. Heating to the point of decomposition causes emission of acrid smoke and fumes [Lewis]. Health Hazard Inhalation of dust irritates nose and throat. Contact with eyes causes irritation. Fire Hazard Behavior in Fire: Melts and decomposes. The reaction is not hazardous. Biological Activity Commonly used laboratory reagent

Citric acid Preparation Products And Raw materials

Raw materials Oxobutanedioic acid Calcium carbonate D(+)-Sucrose Hydrochloric acid Sodium hydroxide Starch Molasses Paste Sulfuric acid ketene

Preparation Products Ammonium citrate dibasic TERT-BUTYL 4-(3-FORMYLBENZYL)TETRAHYDRO-1(2H)-PYRAZINECARBOXYLATE Acetyl tributyl citrate METHYL 3-((PIPERIDIN-4-YL)METHYL)BENZOATE N-isopropyl-2-(piperazin-1-yl)pyridin-3-amine 1-CYCLOPROPYLPIPERAZINE 4-((1-(TERT-BUTOXYCARBONYL)PIPERIDIN-4-YL)METHYL)BENZOIC ACID 1-N-Boc-3-hydroxyazetidine METHYL 4-((PIPERIDIN-4-YL)METHYL)BENZOATE 4,4'-Oxydianiline D-Glucosamine hydrochloride 2-((1-(TERT-BUTOXYCARBONYL)PIPERIDIN-4-YL)METHYL)BENZOIC ACID 2-FLUORO-5-HYDROXYBENZOIC ACID 5-FLUORO-4-HYDROXY-2-METHOXYBENZONITRILE Tripotassium citrate 1-Trityl-1H-imidazole-4-carboxylic acid N-Boc-S-Trityl-L-cysteine 2-(PIPERAZIN-1-YL)-ACETIC ACID N-(2-PHENYLETHYL)-AMIDE TERT-BUTYL-4-(3-HYDROXYPROPYL)PIPERAZINE-1-CARBOXYLATE 4-(4-Methoxyphenyl)butyric acid 3-((1-(TERT-BUTOXYCARBONYL)PIPERIDIN-4-YL)METHYL)BENZOIC ACID 3-N-Boc-Aminomethylpiperidine 4-(2-FORMYLPHENYL)PIPERAZINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER Phosphatizing liquid Disodium stannous citrate Fentanyl citrate 6-BROMO-2H-1,4-BENZOXAZIN-3(4H)-ONE Zinc citrate Rifapentine TERT-BUTYL 4-(4-FORMYLBENZYL)PIPERAZINE-1-CARBOXYLATE Potassium citrate 2-FLUORO-5-METHOXYBENZOIC ACID Calcium citrate METHYL 2-((PIPERIDIN-4-YL)METHYL)BENZOATE 3-Amino-2-[4-butoxycarbonyl(piperazino)]pyridine 2-Hydroxy-1,2,3-propanetricarboxylic acid triammonium salt Itaconic anhydride 5-BROMO-2-FLUOROPYRIDINE-3-CARBALDEHYDE 2-Fluoropyridine-4-carboxaldehyde Trisodium citrate dihydrate

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