791725

Citric acid

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

• 동의어(들): 2-Hydroxy-propane-1,2,3-tricarboxylic acid
• Linear Formula: HOC(COOH)(CH₂COOH)₂
• CAS Number: 77-92-9
• Molecular Weight: 192.12
• Beilstein: 782061
• EC Number: 201-069-1
• MDL number: MFCD00011669
• UNSPSC 코드: 12352100
• PubChem Substance ID: 329768287
• NACRES: NA.21

속성

• Grade: ACS reagent; anhydrous
• Quality Level: 200
• 제품 라인: Redi-Dri^™
• 분석: ≥99.5%
• 형태: crystals
• 품질: free-flowing
• expl. lim.: 8 %, 65 °F
• 불순물: Substances carbonizable by hot sulfuric acid, passes test
• 무기 잔류물: ≤0.02%
• pKa: (1) 3.13, (2) 4.76, (3) 6.4
• mp: 153-159 °C (lit.)
• 음이온 미량물: chloride (Cl^-): ≤0.001%; oxalate (C₂O₄^2-): passes test (limit about 0.003%); phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.002%
• 양이온 미량물: Fe: ≤3 ppm; Pb: ≤2 ppm
• 작용기: carboxylic acid; hydroxyl
• 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

설명

일반 설명

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.

애플리케이션

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.

법적 정보

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

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

안전성 정보

• 픽토그램: GHS07
• 신호어: Warning
• 유해 및 위험 성명서: H319,H335
• 예방조치 성명서: P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - STOT SE 3
• 표적 기관: Respiratory system
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable