Documentos clave

Ver Toda la documentación

251275

Ácido cítrico

Name: Ácido cítrico
Brand: SIAL

ACS reagent grade, ≥99.5%, crystals

Sinónimos:

2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid

Iniciar sesión para ver los precios por organización y contrato.

Seleccione un Tamaño

Cambiar Vistas

Acerca de este artículo

Fórmula lineal:

HOC(COOH)(CH₂COOH)₂

Número CAS:

77-92-9

Peso molecular:

192.12

NACRES:

NA.21

PubChem Substance ID:

24855122

eCl@ss:

39021801

UNSPSC Code:

12352100

EC Number:

201-069-1

MDL number:

MFCD00011669

Beilstein/REAXYS Number:

782061

Assay:

≥99.5%

Form:

crystals

Servicio técnico

¿Necesita ayuda? Nuestro equipo de científicos experimentados está aquí para ayudarle.

Permítanos ayudarle

Propiedades

Nombre del producto

Ácido cítrico, ACS reagent, ≥99.5%

grade

ACS reagent

Quality Segment

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 (C₂O₄^2-): passes test (limit about 0.003%), phosphate (PO₄^3-): ≤0.001%, sulfate (SO₄^2-): ≤0.002%

cation traces

Fe: ≤3 ppm, Pb: ≤2 ppm

functional group

carboxylic acid, hydroxyl

storage temp.

room temp

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)

Descripción

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.

Application

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.

Other Notes

Go to Redi-Dri^™ Product Listing 791725

Legal Information

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

Still not finding the right product?

Explore all of our products under Ácido cítrico

Pictogramas

GHS07

Palabra de advertencia

Warning

Códigos de peligro

H319,H335

Indicaciones de precaución

P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338

Hazard Classifications

Eye Irrit. 2 - STOT SE 3

Órganos diana

Respiratory system

Clase de almacenamiento

11 - Combustible Solids

Punto de inflamación (°F)

Not applicable

Punto de inflamación (°C)