Merck
Todas las fotos(7)

251275

Sigma-Aldrich

Citric acid

ACS reagent, ≥99.5%

Fórmula lineal:
HOC(COOH)(CH2COOH)2
Número de CAS:
Peso molecular:
192.12
Beilstein:
782061
Número de EC:
Número MDL:
eCl@ss:
39021801
ID de la sustancia en PubChem:

Nivel de calidad

200

grado

ACS reagent

ensayo

≥99.5%

formulario

crystals

lim. expl.

8 %, 65 °F

impurezas

Substances carbonizable by hot sulfuric acid, passes test

residuo de ign.

≤0.02%

pKa 

(1) 3.13, (2) 4.76, (3) 6.4

mp

153-159 °C (lit.)

trazas de anión

chloride (Cl-): ≤0.001%
oxalate (C2O42-): passes test (limit about 0.003%)
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%

trazas de catión

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)

¿Está buscando productos similares? Visit Guía de comparación de productos

Descripción general

Citric acid is an organic acid commonly used as a chelating agent, a buffering agent, for pH adjustment and derivatization.

Aplicación

Citric acid has been used to prepare:
  • Phosphate citrate buffer for use in enzyme-linked immunosorbent assay.
  • Citrate-stabilized ceria aqueous sol, which was employed in the synthesis of cerium oxide nanoparticles.
  • Citric acid-Na2HPO4-buffered stock solution for use in the determination of fecal urease activity.
  • Anticoagulant citrate dextrose solution A (ACD-A), which is employed during the isolation of blood-derived endothelial progenitor cells.

Citric acid has also been used:
  • In a novel process which allows controlling of the particle size during the synthesis of palladium cuboctahedrons.
  • To prepare citric acid-derived carbon nanodots (CNDs) by bottom-up carbonization method.
  • As a bi-component chelating agent for the synthesis of Li4Ti5O12 (lithium titanate oxide) by a novel sol–gel method.

Envase

5, 100, 500 g in poly bottle
1, 2.5 kg in poly bottle
12 kg in fiber drum

Información legal

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

pictogramas

Exclamation mark

Palabra de señalización

Warning

Frases de peligro

Clasificaciones de peligro

Eye Irrit. 2 - STOT SE 3

Órganos de actuación

Respiratory system

Código de clase de almacenamiento

11 - Combustible Solids

WGK

WGK 1

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

Equipo de protección personal

dust mask type N95 (US), Eyeshields, Gloves

Certificado de Análisis

Introduzca el número de lote para buscar un certificado de análisis (COA).

Certificado de origen

Introduzca el número de lote para buscar un Certificado de origen (COO).

Investigation of Size-Dependent Plasmonic and Catalytic Properties of Metallic Nanocrystals Enabled by Size Control with HCl Oxidative Etching.
Li B, et al.
Small, 8(11), 1710-1716 (2012)
Cerium fluoride nanoparticles protect cells against oxidative stress.
Shcherbakov AB, et al.
Materials Science & Engineering. C, Materials For Biological Applications, 50, 151-159 (2015)
Citric Acid
Lopez-Garcia, R
Kirk-Othmer Encyclopedia of Chemical Technology (2010)
Xiaorong Dai et al.
PloS one, 9(11), e110402-e110402 (2014-11-15)
Ammonia emission from animal production is a major environmental problem and has impacts on the animal health and working environment inside production houses. Ammonia is formed in manure by the enzymatic degradation of urinary urea and catalyzed by urease that
Juan M Melero-Martin et al.
Methods in enzymology, 445, 303-329 (2008-11-22)
Rapid and complete vascularization of ischemic tissues and thick engineered tissues is likely to require vasculogenesis. Therefore, the search for clinically relevant sources of vasculogenic cells and the subsequent development of experimental models of vasculogenesis is of utmost importance. Here

Protocolos

Protocol for Purification, Optional Reduction, and SEC-MS Analysis of a Monoclonal Antibody

A complete workflow for the intact and middle-up mass analysis of reduced and non-reduced monoclonal antibodies based on SEC-MS with sample preparation by protein-A affinity clean-up.

Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.

Póngase en contacto con el Servicio técnico