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Merck
CN

09898

Ammonium oxalate monohydrate

BioUltra, ≥99.5% (RT)

Synonym(s):

Oxalic acid diammonium salt

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About This Item

Linear Formula:
(NH4)2C2O4 · H2O
CAS Number:
Molecular Weight:
142.11
UNSPSC Code:
12161700
NACRES:
NA.25
PubChem Substance ID:
EC Number:
238-135-4
Beilstein/REAXYS Number:
3759830
MDL number:
Assay:
≥99.5% (RT)
Grade:
reagent grade
Solubility:
H2O: 0.1 M at 20 °C, clear, colorless
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grade

reagent grade

Quality Level

product line

BioUltra

assay

≥99.5% (RT)

impurities

insoluble matter, passes filter test

loss

≤0.02% loss on ignition

pH

6.0-7.0 (25 °C, 0.1 M in H2O)

mp

133 °C (dec.) (lit.)

solubility

H2O: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤5 mg/kg, sulfate (SO42-): ≤20 mg/kg

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: ≤2 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: ≤10 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

absorption

cut-off at 267 nm in H2O at 0.1 M

SMILES string

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

InChI

1S/C2H2O4.2H3N.H2O/c3-1(4)2(5)6;;;/h(H,3,4)(H,5,6);2*1H3;1H2

InChI key

MSMNVXKYCPHLLN-UHFFFAOYSA-N

Application

Ammonium oxalate monohydrate can be used to study chelators, biological buffers and biochemicals and reagents. Ammonium oxalate monohydrate has been used in an analysis of the effective segregation coefficient keff of different impurities, which suggested that the dehydration energies of cations mainly determine the capability of capture of impurity species by the growing crystal.

Other Notes

Complexes with Cu, thus inhibits spinach chloroplast phenolase


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pictograms

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signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves



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Study of segregation coefficient of Mn(II) impurity in ammonium oxalate monohydrate crystals and the relationship between segregation coefficient and growth kinetics
Sangwal, K. and Mielniczek-Brzoska, E.
Journal of Crystal Growth, 257, 185-198 (2003)
Study of segregation coefficient of cationic impurities in ammonium oxalate monohydrate crystals during growth from aqueous solutions
Sangwal, K., et al.
Journal of Crystal Growth, 244, 183-193 (2002)
M. Sato
Phytochemistry, 19, 1939-1939 (1980)



Global Trade Item Number

SKUGTIN
264261-1G04061836683665
09898-100G04061838474445
09898-500G04061838658326