33506

Oxalic acid dihydrate

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

• Sinónimos: Ethanedioic acid dihydrate
• Fórmula lineal: HO₂CCO₂H · 2H₂O
• Número de CAS: 6153-56-6
• Peso molecular: 126.07
• Beilstein/REAXYS Number: 3679436
• EC Number: 205-634-3
• MDL number: MFCD00149102
• UNSPSC Code: 12352100
• eCl@ss: 39021701
• PubChem Substance ID: 57648855
• NACRES: NA.21

Propiedades

• grade: ACS reagent; puriss. p.a.
• Quality Level: 200
• agency: USP/NF; reag. ISO; reag. Ph. Eur.
• vapor density: 4.4 (vs air)
• vapor pressure: <0.01 mmHg ( 20 °C)
• assay: ≥99.5% (manganometric)
• form: crystals
• impurities: foreign organic matter, in accordance; ≤0.001% total nitrogen (N)
• ign. residue: ≤0.01% (as SO₄)
• mp: 104-106 °C (lit.)
• anion traces: chloride (Cl^-): ≤5 mg/kg; sulfate (SO₄^2-): ≤20 mg/kg
• cation traces: 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)
• functional group: carboxylic acid
• 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

Descripción

General description

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.

Application

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.

Información de seguridad

• pictograms: GHS05,GHS07
• signalword: Danger
• hcodes: H302 + H312,H318
• pcodes: P264 - P280 - P301 + P312 - P302 + P352 + P312 - P305 + P351 + P338 - P362 + P364
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• ppe: dust mask type N95 (US), Eyeshields, Gloves