Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
251275
Ácido cítrico
ACS reagent, ≥99.5%
Sinónimos:
2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid
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About This Item
Productos recomendados
grado
ACS reagent
Nivel de calidad
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
grupo funcional
carboxylic acid
hydroxyl
cadena SMILES
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)
Clave InChI
KRKNYBCHXYNGOX-UHFFFAOYSA-N
Información sobre el gen
human ... SRC(6714)
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Descripción general
Aplicación
- 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]
Otras notas
Información legal
Palabra de señalización
Warning
Frases de peligro
Consejos de prudencia
Clasificaciones de peligro
Eye Irrit. 2 - STOT SE 3
Órganos de actuación
Respiratory system
Código de clase de almacenamiento
11 - Combustible Solids
Clase de riesgo para el agua (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
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How is shipping temperature determined? And how is it related to the product storage temperature?
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdfHelpful?
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Technical question: is this product sourced in the EU. Is it for RUO.
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Yes, this product is intended for research use only. The country of origin may vary lot to lot.
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Do you have a recommendation for an expiry date after opening this reagent (storage in dry place at RT)?
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This product does not contain an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services.
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