791725

Acide citrique

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

• Synonyme(s) : 2-Hydroxy-propane-1,2,3-tricarboxylic acid
• Formule linéaire : HOC(COOH)(CH₂COOH)₂
• Numéro CAS: 77-92-9
• Poids moléculaire : 192.12
• Numéro Beilstein : 782061
• Numéro CE : 201-069-1
• Numéro MDL: MFCD00011669
• Code UNSPSC : 12352100
• ID de substance PubChem : 329768287
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: ACS reagent; anhydrous; free-flowing
• Niveau de qualité: 200
• Gamme de produits: Redi-Dri^™
• Pureté: ≥99.5%
• Forme: crystals
• Limite d'explosivité: 8 %, 65 °F
• Impuretés: Substances carbonizable by hot sulfuric acid, passes test
• Résidus de calcination: ≤0.02%
• pKa: (1) 3.13, (2) 4.76, (3) 6.4
• Pf: 153-159 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤0.001%; oxalate (C₂O₄^2-): passes test (limit about 0.003%); phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.002%
• Traces de cations: Fe: ≤3 ppm; Pb: ≤2 ppm
• Chaîne 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)
• Clé InChI: KRKNYBCHXYNGOX-UHFFFAOYSA-N

Description

Description générale

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.

Application

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.

Informations légales

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

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

Informations sur la sécurité

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H319,H335
• Conseils de prudence: P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338
• Classification des risques: Eye Irrit. 2 - STOT SE 3
• Organes cibles: Respiratory system
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable