247537

Oxalsäure Dihydrat

ACS reagent, ≥99%

• Synonym(e): Ethandisäure Dihydrat
• Lineare Formel: HO₂CCO₂H · 2H₂O
• CAS-Nummer: 6153-56-6
• Molekulargewicht: 126.07
• Beilstein: 3679436
• EG-Nummer: 205-634-3
• MDL-Nummer: MFCD00149102
• UNSPSC-Code: 12352100
• eCl@ss: 39021701
• PubChem Substanz-ID: 24854873
• NACRES: NA.21

Eigenschaften

• Qualität: ACS reagent
• Qualitätsniveau: 200
• Dampfdichte: 4.4 (vs air)
• Dampfdruck: <0.01 mmHg ( 20 °C)
• Assay: ≥99%; 99.5-102.5% (ACS specification)
• Form: solid
• Verunreinigungen: H₂SO₄, passes test (darkened); ≤0.001% N compounds; ≤0.005% insolubles
• Glührückstand: ≤0.01%
• mp (Schmelzpunkt): 104-106 °C (lit.)
• Anionenspuren: chloride (Cl^-): ≤0.002%; sulfate (SO₄^2-): ≤0.005%
• Kationenspuren: Ca: ≤0.001%; Fe: ≤2 ppm; heavy metals: ≤5 ppm (by ICP-OES)
• 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
• InChIKey: GEVPUGOOGXGPIO-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

Oxalic acid dihydrate is a promising candidate as a phase change material (PCM) for use in thermal energy storage (TES) technology due to its high heat of fusion and energy storage density/price ratio in comparison to other salt hydrates PCMs.

Anwendung

Oxalic acid dihydrate may be used:

• As a catalyst in the preparation of tetrahydroquinoline derivatives via imino Diels-Alder reaction.
• As a homogeneous catalyst in the preparation of highly functionalized piperidines via multi-component reaction.
• As an oxidant for the formation of triazolinediones from corresponding urazoles and bisurazoles via oxidation.
• In the transformation of thiols to nitrosothiols by reacting with sodium nitrite.

Sicherheitshinweise

• Piktogramme: GHS05,GHS07
• Signalwort: Danger
• H-Sätze: H302 + H312,H318
• P-Sätze: P264 - P280 - P301 + P312 - P302 + P352 + P312 - P305 + P351 + P338 - P362 + P364
• Gefahreneinstufungen: Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 1
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Gloves