1.01154

di-Ammonium hydrogen citrate

for analysis EMSURE^® ACS,Reag. Ph Eur

• Synonym(s): di-Ammonium hydrogen citrate, Ammonium citrate dibasic, Diammonium hydrogen citrate
• Empirical Formula (Hill Notation): C₆H₁₄N₂O₇
• CAS Number: 3012-65-5
• Molecular Weight: 226.18
• MDL number: MFCD00013068
• UNSPSC Code: 12352107
• EC Index Number: 221-146-3
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 300
• agency: reag. Ph. Eur.
• product line: EMSURE^®
• assay: 99.0-102.0% (alkalimetric)
• form: solid
• impurities: ≤0.005% Insoluble matter
• ign. residue: ≤0.01% (as sulfate)
• pH: 3.3-5.3 (23 g/L in H₂O)
• density: 1.48 g/cm³ at 20 °C
• bulk density: 400‑600 kg/m³
• anion traces: chloride (Cl^-): ≤0.0005%; oxalate (C₂O₄^2-): passes test (limit about 0.05%); phosphate (PO₄^3-): ≤0.0005%; sulfur compounds (as SO₄^2-): ≤0.005%
• cation traces: Fe: ≤0.0005%; heavy metals (as Pb): ≤0.0005%
• storage temp.: 2-30°C
• InChI: 1S/C6H8O7.2H3N/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);2*1H3
• InChI key: YXVFQADLFFNVDS-UHFFFAOYSA-N

Description

Application

• An EPR and optical absorption study of VO2+ ions in di-ammonium hydrogen citrate [(NH4)2C6H6O7] single crystals.: This research examines the electronic paramagnetic resonance and optical properties of VO2+ ions in di-ammonium hydrogen citrate, which could influence analytical techniques in chemistry and materials science (Karabulut and Tufan, 2008).

Linkage

Replaces: AX1285-1; AX1285; AX1285-3; AX1285-20

Analysis Note

Assay (alkalimetric): 99.0 - 102.0 %
Insoluble matter: ≤ 0.005 %
pH-value (0.1 mol/L): 3.3 - 5.3
Chloride (Cl): ≤ 0.0005 %
Oxalate (C₂O₄): passes test (Limit about 0.05 %)
Phosphate (PO₄): ≤ 0.0005 %
Total sulfur (as SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
Residue on ignition (as sulfate): ≤ 0.01 %
Corresponds to ACS,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315 - H319
• pcodes: P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P337 + P313
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable