791725

Ácido cítrico

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: 77-92-9
• Peso molecular: 192.12
• Beilstein: 782061
• Número CE: 201-069-1
• Número MDL: MFCD00011669
• Código UNSPSC: 12352100
• ID de substância PubChem: 329768287
• NACRES: NA.21

Propriedades

• grau: ACS reagent; anhydrous
• Nível de qualidade: 200
• linha de produto: Redi-Dri^™
• Ensaio: ≥99.5%
• forma: crystals
• 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 (C₂O₄^2-): passes test (limit about 0.003%); phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.002%
• traços de cátion: Fe: ≤3 ppm; Pb: ≤2 ppm
• cadeia de caracteres 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)
• chave InChI: KRKNYBCHXYNGOX-UHFFFAOYSA-N

Descrição

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.

Informações legais

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

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

Informações de segurança

• Pictogramas: GHS07
• Palavra indicadora: Warning
• Frases de perigo: H319 - H335
• Declarações de precaução: P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338
• Classificações de perigo: Eye Irrit. 2 - STOT SE 3
• Órgãos-alvo: Respiratory system
• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable