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Merck

W230618

Sigma-Aldrich

Ácido cítrico

≥99.5%, FCC, FG

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About This Item

Fórmula lineal:
HOC(COOH)(CH2COOH)2
Número de CAS:
Peso molecular:
192.12
Número de FEMA:
2306
Beilstein:
782061
Número CE:
nº del Consejo Europeo:
20c
Número MDL:
Código UNSPSC:
12164502
ID de la sustancia en PubChem:
NACRES:
NA.21
En este momento no podemos mostrarle ni los precios ni la disponibilidad

origen biológico

synthetic

Nivel de calidad

grado

FG
Halal
Kosher

cumplimiento norm.

EU Regulation 1334/2008 & 178/2002
FCC
FDA 21 CFR 117
FDA 21 CFR 184.1033

Ensayo

≥99.5%

Formulario

powder or granules

lim. expl.

8 %, 65 °F

pKa 

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

mp

153-159 °C (lit.)

solubilidad

water: 383 g/L at 25 °C

trazas de catión

As: ≤3.0 ppm
Cd: ≤1.0 ppm
Hg: ≤1.0 ppm
Pb: ≤0.5 ppm

aplicaciones

flavors and fragrances

Documentación

see Safety & Documentation for available documents

alérgeno alimentario

no known allergens

Organoléptico

odorless

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

Citric acid is an important organic acid that is extensively used in the food industry as a pH control agent, flavor modifier, an antimicrobial agent, a leavening agent and as an antioxidant.[1] The treatment of potato-based foods with a combination of citric acid and glycine in low concentration may reduce the formation of acrylamide with minimal effect on the flavor.[2] Citric acid is also an effective anti-browning agent of food and beverages due to its ability to inhibit the activity of polyphenol oxidase (PPO) enzyme responsible for browning.[3][4][5]

Aplicación


  • Integrated time-series biochemical, transcriptomic, and metabolomic analyses reveal key metabolites and signaling pathways in the liver of the Chinese soft-shelled turtle (Pelodiscus sinensis) against Aeromonas hydrophila infection.: This study uses a combination of biochemical, transcriptomic, and metabolomic approaches to identify critical metabolites and pathways, including those involving citric acid, in the response of the Chinese soft-shelled turtle to bacterial infection (Ji et al., 2024).

  • Enhancement of vitamin B(6) production driven by omics analysis combined with fermentation optimization.: The study integrates omics analyses with fermentation strategies to boost vitamin B6 production, identifying citric acid as a pivotal metabolic component in the optimization process (Tian et al., 2024).

Cláusula de descargo de responsabilidad

The product is not intended for use as a biocide under global biocide regulations, including but not limited to US EPA′s Federal Insecticide Fungicide and Rodenticide Act, European Biocidal Products Regulation, Canada’s Pest Management Regulatory Agency, Turkey’s Biocidal Products Regulation, Korea’s Consumer Chemical Products and Biocide Safety Management Act (K-BPR) and others.

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

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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Certificados de análisis (COA)

Lot/Batch Number

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Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca de documentos.

Visite la Librería de documentos

Burdock GA
Encyclopedia of Food and Color Additives, 1, 613-616 (1997)
Browning inhibition mechanisms by cysteine, ascorbic acid and citric acid, and identifying PPO-catechol-cysteine reaction products
Ali HM, et al
Journal of Food Science and Technology, 52(6), 3651-3659 (2015)
Effect of citric acid and glycine addition on acrylamide and flavor in a potato model system
Low M Y, et al.
Journal of Agricultural and Food Chemistry, 54(16), 5976-5983 (2006)
Use of citric acid for shelf life and quality maintenance of fresh-cut Chinese water chestnut
Jiang, Y, et al
Journal of Food Engineering, 63(3), 325-328 (2004)
Prevention of enzymatic browning in fruit and vegetables
Ioannou I
European Scientific Journal, 9(30), 310-341 (2013)

Questions

1–3 of 3 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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

      Helpful?

  3. I want to use this for the Ca Wet (TCLP) procedure. We usually use Citric Acid Monohydrate. Is this Citric Acid Monohydrate?

    1 answer
    1. This product is the free acid form, not the monohydrate. Please see the link below to review the available Citric Acid Monohydrate product options:
      https://www.sigmaaldrich.com/substance/citricacidmonohydrate210145949291?srsltid=AfmBOoq-ZRBbPqkxwlXTT_7W4jLeHGYszuc6gsNvvtt57_YC1jm3xtB9

      Helpful?

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