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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 Segment

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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