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Merck

75699

Oxalic acid dihydrate

BioUltra, ≥99.0% (RT)

Synonym(s):

Ethanedioic acid dihydrate

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About This Item

Linear Formula:
HO2CCO2H · 2H2O
CAS Number:
Molecular Weight:
126.07
NACRES:
NA.25
PubChem Substance ID:
eCl@ss:
39021701
UNSPSC Code:
12161700
EC Number:
205-634-3
MDL number:
Beilstein/REAXYS Number:
3679436
Assay:
≥99.0% (RT)
Form:
crystals
Grade:
biotech. grade
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grade

biotech. grade

Quality Level

vapor density

4.4 (vs air)

vapor pressure

<0.01 mmHg ( 20 °C)

product line

BioUltra

assay

≥99.0% (RT)

form

crystals

impurities

insoluble matter, passes filter test, ≤0.001% total nitrogen (N)

ign. residue (900 °C)

≤0.01% (as SO4)

pH

~1.0 (25 °C, 1 M in H2O)

mp

104-106 °C (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤5 mg/kg, sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤5 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: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

absorption

cut-off at 303 nm in H2O at 1 M

SMILES string

[H]O[H].[H]O[H].OC(=O)C(O)=O

InChI

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

InChI key

GEVPUGOOGXGPIO-UHFFFAOYSA-N



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pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1

Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Gloves



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Paul A Nakata
PloS one, 10(10), e0141982-e0141982 (2015-10-31)
The establishment of new approaches to control chewing insects has been sought not only for direct use in reducing crop loss but also in managing resistance to the pesticides already in use. Engineered formation of calcium oxalate crystals is a
Jun Hu et al.
Physical chemistry chemical physics : PCCP, 17(32), 20537-20542 (2015-07-23)
Olive-shaped SnO2 nanocrystals were synthesized successfully via a facile hydrothermal route, using tin dichloride hydrate, oxalic acid dihydrate and polyvinylpyrrolidone as reaction precursors, and showed great potential in the large-scale preparation of SnO2 nanocrystals. The prepared SnO2 nanocrystals were characterized
Radomír Pilný et al.
Dalton transactions (Cambridge, England : 2003), 43(32), 12243-12250 (2014-06-11)
Complex formation between [Pd(H2O)4](2+) and oxalate (ox = C2O4(2-)) has been studied spectrophoto-metrically in aqueous solution at variable temperature, ionic strength and pH. Thermodynamic parameters at 298.2 K and 1.00 mol dm(-3) HClO4 ionic medium for the complex formation [Pd(H2O)4](2+)