8.18707

Citric acid

anhydrous for synthesis

• Synonym(s): 2-Hydroxypropane-1,2,3-tricarboxylic acid, Hydroxytricarballylic acid
• Linear Formula: HOC(COOH)(CH₂COOH)₂
• CAS Number: 77-92-9
• Molecular Weight: 192.12
• Beilstein/REAXYS Number: 782061
• MDL number: MFCD00011669
• UNSPSC Code: 12352106
• EC Index Number: 201-069-1
• NACRES: NA.22

Properties

• vapor pressure: <0.1 hPa ( 20 °C)
• Quality Level: 200
• assay: ≥99% (alkalimetric)
• form: solid
• potency: 3000 mg/kg LD₅₀, oral (Rat)
• expl. lim.: 8 %, 65 °F
• pH: 1.7 (20 °C, 100 g/L in H₂O)
• pKa: (1) 3.13, (2) 4.76, (3) 6.4
• bp: 200 °C/1013 hPa (decomposition)
• mp: 153-159 °C (lit.)
• solubility: 1330 g/L
• density: 1.665 g/cm³ at 18 °C
• bulk density: 560 kg/m³
• storage temp.: 15-25°C
• 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

Description

Application

• Citric acid′s role in nanotechnology: Research on the use of citric acid as a precursor in the synthesis of carbon dots, highlighting its role in the creation of fluorescent nanoparticles for advanced material applications (J Schneider et al., 2017).

Analysis Note

Assay (alkalimetric): ≥ 99 %
Identity (IR-spectrum): passes test

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H319 - H335
• pcodes: P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable