27487

Citric acid

BioUltra, anhydrous, ≥99.5% (T)

• Linear Formula: HOC(COOH)(CH₂COOH)₂
• CAS Number: 77-92-9
• Molecular Weight: 192.12
• NACRES: NA.25
• PubChem Substance ID: 57648248
• eCl@ss: 39021801
• UNSPSC Code: 12161700
• EC Number: 201-069-1
• MDL number: MFCD00011669
• Beilstein/REAXYS Number: 782061
• Assay: ≥99.5% (T)
• Form: powder or crystals
• Grade: biotech. grade

Properties

• grade: biotech. grade
• Quality Segment: 200
• product line: BioUltra
• assay: ≥99.5% (T)
• form: powder or crystals
• expl. lim.: 8 %, 65 °F
• technique(s): cell culture | hybridoma: suitable
• impurities: insoluble matter, passes filter test
• ign. residue: ≤0.05% (as SO₄)
• loss: ≤0.5% loss on drying, 110 °C
• pH: 1.0-2.0 (25 °C, 1 M in H₂O)
• pKa: (1) 3.13, (2) 4.76, (3) 6.4
• mp: 153-159 °C (lit.)
• solubility: H₂O: 1 M at 20 °C, clear, colorless
• anion traces: chloride (Cl^-): ≤5 mg/kg, oxalate (C₂O₄^2-): ≤0.05%, phosphate (PO₄^3-): ≤5 mg/kg, sulfate (SO₄^2-): ≤20 mg/kg, tartrate (C₄H₄O₆^2-): ≤0.20%
• cation traces: Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg
• SMILES string: OC(=O)CC(O)(CC(O)=O)C(O)=O
• λmax: 260 nm (Amax: ≤0.20), 280 nm (Amax: ≤0.10)
• λ: 1 M in H₂O
• UV absorption: λ: 260 nm A_max: 0.20, λ: 280 nm A_max: 0.10
• 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
• Gene Information: human ... SRC(6714)

Description

General description

Citric acid is a buffer component for triple-column amino acid analysis.[1] It is an optimal buffer for dissociation of radioiodinated antibodies from viable murine tumor cells.[2]

Application

• Enhancing soil microbiomes: Citric acid has been applied to modify soil bacterial communities in saline mudflats, demonstrating its utility in environmental biotechnology for sustainable ecosystem management (Liu et al., 2024).


• Biodegradable packaging in food industry: In food chemistry, citric acid is used in conjunction with polyvinyl alcohol for developing antimicrobial packaging, highlighting its potential in food safety and preservation (Xu et al., 2024).


• Nanomaterial synthesis for engineering applications: Citric acid serves as a key component in the eco-friendly synthesis of hybrid nanomaterials for supercapacitors, underpinning its role in advancing materials science and engineering (Teixeira et al., 2024).


• Environmental science and pollution control: Research utilizes citric acid to study the co-transport of pharmaceuticals and nanoparticles in environmental systems, aiding in the understanding of contaminant dynamics and mitigation strategies (Cui et al., 2024).


• Food science and technology: Citric acid is employed in the formulation of vegan gummies, indicating its versatility in food product development and its impact on textural properties (Rawat et al., 2024).

Disclaimer

The product is not intended for use as a biocide under global biocide regulations, including but not limited to the US EPA′s Federal Insecticide Fungicide and Rodenticide Act, the European Biocidal Products Regulation, Canada’s Pest Management Regulatory Agency, Turkey’s Biocidal Products Regulation, Korea’s Consumer Chemical Products and Biocide Safety Management Act (K-BPR), and others.

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
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves