Sigma-Aldrich 251275 Citric acid ACS reagent, ≥99.5% 2.5 kg
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Brand
Stock Code
LB.SA.251275-2.5KG
Kısa Bilgi
Synonym(s): 2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid Linear Formula: HOC(COOH)(CH2COOH)2 CAS Number: 77-92-9 Molecular Weight: 192.12 Beilstein: 782061 EC Number: 201-069-1 MDL number: MFCD00011669 eCl@ss: 39021801 PubChem Substance ID: 24855122
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CAS Number: 77-92-9
| Sigma-Aldrich 251275 Citric acid ACS reagent, ≥99.5% |
| Synonym(s): 2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid Linear Formula: HOC(COOH)(CH2COOH)2 CAS Number: 77-92-9 Molecular Weight: 192.12 Beilstein: 782061 EC Number: 201-069-1 MDL number: MFCD00011669 eCl@ss: 39021801 PubChem Substance ID: 24855122 |
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PROPERTIES
grade ACS reagent
Quality Level 200 Assay ≥99.5% form crystals expl. lim. 8 %, 65 °F impurities Substances carbonizable by hot sulfuric acid, passes test ign. residue ≤0.02% pKa (1) 3.13, (2) 4.76, (3) 6.4 mp 153-159 °C (lit.) anion traces chloride (Cl-): ≤0.001% oxalate (C2O42-): passes test (limit about 0.003%) phosphate (PO43-): ≤0.001% sulfate (SO42-): ≤0.002% cation traces Fe: ≤3 ppm Pb: ≤2 ppm SMILES string OC(=O)CC(O)(CC(O)=O)C(O)=O InChI 1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12) InChI key KRKNYBCHXYNGOX-UHFFFAOYSA-N Gene Information human ... SRC(6714) DESCRIPTION General description Citric acid is a weak organic acid that is commonly used for pH adjustment, as a chelating agent, as a buffering agent, derivatization and as starting material for the synthesis of citrate esters and other compounds.[1] Application Citric acid has been used to prepare: - Phosphate citrate buffer for use in enzyme-linked immunosorbent assay.[2] - Citrate-stabilized ceria aqueous sol, which was employed in the synthesis of cerium oxide nanoparticles.[3] - Citric acid-Na2HPO4-buffered stock solution for use in the determination of fecal urease activity.[4] - Anticoagulant citrate dextrose solution A (ACD-A), which is employed during the isolation of blood-derived endothelial progenitor cells.[5] Citric acid has also been used: - In a novel process which allows controlling of the particle size during the synthesis of palladium cuboctahedrons.[6] - To prepare citric acid-derived carbon nanodots (CNDs) by bottom-up carbonization method.[7] - As a bi-component chelating agent for the synthesis of Li4Ti5O12 (lithium titanate oxide) by a novel sol–gel method.[8] Other Notes Go to Redi-Dri™ Product Listing 791725 Legal Information Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
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