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Merck
CN

25102

Ammonium citrate dibasic

puriss., ≥98%

Synonym(s):

Ammonium hydrogencitrate, Citric acid ammonium salt, Diammonium hydrogen citrate

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About This Item

Linear Formula:
HOC(CO2H)(CH2CO2NH4)2
CAS Number:
3012-65-5
Molecular Weight:
226.18
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
329752776
EC Number:
221-146-3
Beilstein/REAXYS Number:
4925760
MDL number:
MFCD00013068

Key Documents

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Product Name

Ammonium citrate dibasic, puriss., ≥98%

InChI key

YXVFQADLFFNVDS-UHFFFAOYSA-N

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

SMILES string

N.N.OC(=O)CC(O)(CC(O)=O)C(O)=O

vapor density

1.8 (vs air)

grade

puriss.

assay

≥98%

impurities

≤0.001% heavy metals (as Pb)

pH

4.5-5.5 (20 °C, 5%)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤300 mg/kg

cation traces

Fe: ≤10 mg/kg

functional group

carboxylic acid
hydroxyl

Quality Level

200

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Application

Ammonium citrate dibasic is generally used as a component of matrix solution in matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry analysis. It can also be used as both the carbon and nitrogen source to synthesize fluorescent nitrogen-doped carbon nanoparticles (CNPs).

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H315,H319

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL8215
BCCL5600
BCCJ6311
BCCJ6310
BCCJ6312

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Microwave-assisted ultrafast and facile synthesis of fluorescent carbon nanoparticles from a single precursor: preparation, characterization and their application for the highly selective detection of explosive picric acid.
Sun X, et al.
Journal of Materials Chemistry, 4(11), 4161-4171 (2016)
Study of matrix and polymer substrate in MALDI-TOF mass spectrometry of DNA.
Kim Y and Hurst G B
Microchemical Journal, Devoted to the Application of Microtechniques in All Branches of Science, 70(3), 219-228 (2001)
Accurate characterization of carcinogenic DNA adducts using MALDI tandem time-of-flight mass spectrometry.
Barnes C A and Chiu N H
International Journal of Mass Spectrometry, 279(2-3), 170-175 (2009)
Dmitri V Zagorevskii et al.
Journal of the American Society for Mass Spectrometry, 17(9), 1265-1270 (2006-07-01)
Oligonucleotides synthesized on a montmorillonite catalyst were analyzed directly. By mixing the catalyst with a matrix (2,4,6-trihydroxyacetophenone or 6-aza-2-thiothymine) and dibasic ammonium citrate, higher molecular weight products were detected compared with "classical" methods such as gel electrophoresis and HPLC with
Virginia De Cesare et al.
Proceedings of the National Academy of Sciences of the United States of America, 118(4) (2021-01-23)
The reversibility of ubiquitination by the action of deubiquitinating enzymes (DUBs) serves as an important regulatory layer within the ubiquitin system. Approximately 100 DUBs are encoded by the human genome, and many have been implicated with pathologies, including neurodegeneration and
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