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791725

Sigma-Aldrich

Citric acid

anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥99.5%

Sinônimo(s):
2-Hydroxy-propane-1,2,3-tricarboxylic acid
Fórmula linear:
HOC(COOH)(CH2COOH)2
Número CAS:
Peso molecular:
192.12
Beilstein:
782061
Número EC:
Número MDL:
ID de substância PubChem:
NACRES:
NA.21

Nível de qualidade

200

grau

ACS reagent
anhydrous

linha de produto

Redi-Dri

teor

≥99.5%

qualidade

free-flowing

Lim. expl.

8 %, 65 °F

Impurezas

Substances carbonizable by hot sulfuric acid, passes test

resíduo de ignição

≤0.02%

pKa 

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

pf

153-159 °C (lit.)

traços de ânion

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

traços de cátion

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

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Descrição geral

Citric acid also called 2-hydroxy-propane-1,2,3-tricarboxylic acid, is a component of the tricarboxylic acid cycle in all organisms. Industrial production of citric acid use fungal, yeast and citrus fruit as the major source. Aspergillus niger is majorly used for citric acid production by fermentation Manganese inhibits fermentative production of citric acid Oral supplementation of citric acid promotes tricarboxylic acid cycle and oxidative phosphorylation in mitochondria, attenuating physical fatigue.

Aplicação

Citric acidhas been used as a component of citrate buffer and Fe-free sauton′s medium. It has been used in hybridization chain reaction buffer for preequilibration of coverslips for testes sections.

Embalagem

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

Informações legais

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

Pictogramas

Exclamation mark

Palavra indicadora

Warning

Frases de perigo

Classificações de perigo

Eye Irrit. 2

Código de classe de armazenamento

13 - Non Combustible Solids

WGK

WGK 1

Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Certificado de análise

Certificado de origem

Biochemical studies of citric acid production and accumulation by Aspergillus niger mutants
Gupta S and Sharma CB
World Journal of Microbiology & Biotechnology, 18(5), 379-383 (2002)
A comprehensive roadmap of murine spermatogenesis defined by single-cell RNA-seq
Green CD, et al.
Developmental Cell, 46(5), 651-667 (2018)
Two promoters in the esx-3 gene cluster of Mycobacterium smegmatis respond inversely to different iron concentrations in vitro
Fang Z, et al.
BMC Research Notes, 10(1), 426-426 (2017)
Biotechnological production of citric acid
Max B, et al.
Brazilian Journal of Microbiology, 41(4), 862-875 (2010)
Effects of citric acid and L-carnitine on physical fatigue
Sugino T, et al.
Journal of Clinical Biochemistry and Nutrition, 41(3), 224-230 (2007)

Artigos

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