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247561

Sigma-Aldrich

Ammonium citrate dibasic

ACS reagent, 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
Beilstein/REAXYS Number:
4925760
EC Number:
221-146-3
MDL number:
MFCD00013068
UNSPSC Code:
12352100
PubChem Substance ID:
24854875
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

vapor density

1.8 (vs air)

assay

98%
98.0-103.0% (ACS specification)

form

solid

impurities

oxalate, passes test (lim ~0.05%)
≤0.005% insolubles

ign. residue

≤0.01%

pH

5.2 (20 °C, 50 g/L)

anion traces

chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤5 ppm
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
heavy metals: ≤5 ppm (by ICP)

Related Categories

Application

Ammonium citrate dibasic can be used as both carbon and nitrogen precursor to synthesize nitrogen-doped fluorescent carbon nanoparticles (CNPs) for the development of sensitive and selective sensors for picric acid detection. Solution form of ammonium citrate can also be used in leaching experiments to extract copper nanoparticles from waste printed circuit boards (WPCBs).

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H315,H319

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

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCP7615
MKCN4663
MKCL3708
MKCJ6233
MKCG1903

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F Renosto et al.
Journal of bacteriology, 164(2), 674-683 (1985-11-01)
ATP sulfurylases from Penicillium chrysogenum (a mesophile) and from Penicillium duponti (a thermophile) had a native molecular weight of about 440,000 and a subunit molecular weight of about 69,000. (The P. duponti subunit appeared to be a little smaller than
Environmentally friendly synthesis of copper nanoparticles from waste printed circuit boards
El-Nasr RS, et al.
Separation and Purification Technology, 230, 115860-115860 (2020)
Dora Melucci et al.
Annali di chimica, 97(3-4), 141-151 (2007-09-08)
An analytical procedure fit for the simultaneous determination of copper (II), chromium(VI), thallium(I), lead(II), tin(II), antimony(III), and zinc(II) by square wave anodic stripping voltammetry (SWASV) in three interdependent environmental matrices involved in foods and food chain as meals, cereal plants
Influence of surface charge on maximizing solids loading in colloidal processing of alumina.
Singh BP, et al.
Material Matters, 56(4), 475-480 (2002)
Clinio Locatelli
Analytical and bioanalytical chemistry, 381(5), 1073-1081 (2005-01-29)
Voltammetric methods are very suitable, versatile and rapid techniques for simultaneous determination of metals in complex matrices. The present work, determination of Cu(II), Sn(II), Sb(III), Tl(I), and Pb(II) by square-wave anodic-stripping voltammetry and Cr(VI) by square-wave adsorptive-stripping voltammetry, is an
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