CX1723

Citric Acid, Anhydrous

anhydrous Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

• Synonym(s): Citric acid
• Linear Formula: HOC(COOH)(CH₂COOH)₂
• CAS Number: 77-92-9
• Molecular Weight: 192.12
• Beilstein: 782061
• MDL number: MFCD00011669
• UNSPSC Code: 12352106
• EC Index Number: 201-069-1

Properties

• Agency: meets USP/NF
• Quality Level: 200
• vapor pressure: <0.1 hPa ( 20 °C)
• Assay: 99.5-100.5% dry basis (alkalimetric)
• form: fine powder
• expl. lim.: 8 %, 65 °F
• impurities: ≤0.005% Water-insoluble matter; ≤1% Water (Karl Fischer)
• sulfated ash (600 °C): ≤0.02%
• color: white to almost white
• 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: 1.67 g/cm³ at 20 °C
• anion traces: chloride (Cl^-): ≤0.001%; oxalate (C₂O₄^2-): ≤0.036%; phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.002%
• cation traces: Fe: ≤0.0003%; Pb: ≤0.0002%
• shipped in: ambient
• storage temp.: room temp
• 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

anhydrous Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Analysis Note

Appearancewhite to almost white, fine powderAssay (alkalimetric on dried substance)99.5-100.5%Chloride (Cl)0.001% maxIdentity (IR-spectrum)passes testIron (Fe)0.0003% maxLead (Pb)0.0002% maxOxalate (C2O4)0.036% maxPhosphate (PO4)0.001% maxReadily carbonizable substancespasses testSulfate (SO4)0.002% maxSulfated ash (600°C)0.02% maxWater (acc. to Karl Fischer)1.0% maxWater-insoluble matter0.005% max

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H319,H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable