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33506

Sigma-Aldrich

Oxalic acid dihydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5% (manganometric)

Sinonimo/i:

Ethanedioic acid dihydrate

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About This Item

Formula condensata:
HO2CCO2H · 2H2O
Numero CAS:
6153-56-6
Peso molecolare:
126.07
Beilstein:
3679436
Numero CE:
205-634-3
Numero MDL:
MFCD00149102
Codice UNSPSC:
12352100
eCl@ss:
39021701
ID PubChem:
57648855
NACRES:
NA.21

Grado

ACS reagent
puriss. p.a.

Livello qualitativo

200

agenzia

USP/NF
reag. ISO
reag. Ph. Eur.

Densità del vapore

4.4 (vs air)

Tensione di vapore

<0.01 mmHg ( 20 °C)

Saggio

≥99.5% (manganometric)

Forma fisica

crystals

Impurezze

foreign organic matter, in accordance
≤0.001% total nitrogen (N)

Residuo alla calcinazione

≤0.01% (as SO4)

Punto di fusione

104-106 °C (lit.)

Anioni in tracce

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

Cationi in tracce

Ca: ≤5 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤2 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
heavy metals: ≤5 ppm (by ICP-OES)

Stringa SMILE

[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
GEVPUGOOGXGPIO-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

Oxalic acid dihydrate crystals are monoclinic and exhibit a space group P21/n. Each unit cell contains two molecules. 13C chemical shielding tensors in oxalic acid dihydrate have been evaluated.

Applicazioni

Oxalic acid dihydrate has been used to prepare oxalate precursor, which was employed for the synthesis of zinc oxide nanopowders. It may be used to prepare the 0.01M solution of oxalic acid, which was employed in the mobile phase in liquid chromatographic studies.

Pittogrammi

CorrosionExclamation mark
GHS05,GHS07

Avvertenze

Danger

Indicazioni di pericolo

H302 + H312,H318

Classi di pericolo

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

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves

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Certificati d'analisi (COA)

Lot/Batch Number
BCCL4245
BCCM4256
BCCK9057
BCCK9056
BCCK0473

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