247537
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247537
Sigma-Aldrich
Oxalic acid dihydrate
ACS reagent, ≥99%
| Synonym: | Ethanedioic acid |
| CAS Number: | 6153-56-6 |
| Linear Formula: | HO2CCO2H · 2H2O |
| Molecular Weight: | 126.07 |
| Beilstein Registry Number: | 3679436 |
| EC Number: | 205-634-3 |
| MDL number: | MFCD00149102 |
| PubChem Substance ID: | 24854873 |
Description
| Packaging | 100, 500 g in poly btl |
| 2.5 kg in poly btl |
Properties
| grade | ACS reagent |
| vapor density | 4.4 (vs air) |
| vapor pressure | <0.01 mmHg ( 20 °C) |
| assay | ≥99% |
| 99.5-102.5% (ACS specification) | |
| total impurities | H2SO4, passes test(darkened) |
| ≤0.001% N compounds | |
| ≤0.005% insolubles | |
| ign. residue | ≤0.01% |
| mp | 104-106 °C(lit.) |
| anion traces | chloride (Cl-): ≤0.002% |
| sulfate (SO42-): ≤0.005% | |
| cation traces | Ca: ≤0.001% |
| Fe: ≤2 ppm | |
| heavy metals (as Pb): ≤5 ppm |
Safety
| Personal Protective Equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
| Hazard Codes | Xn |
| Risk Statements | 21/22 |
| Safety Statements | 24/25 |
| RIDADR | UN3261 8/PG 3 |
| WGK Germany | 1 |
References
| Beilstein | Beil. 2,IV,1819 |
| Fieser | Fieser 1,764 / Fieser 2,301 / Fieser 5,481 |
| reference | Aldrich MSDS 1, 1413:D / Corp MSDS 1 (2), 2661:D / FT-IR 2 (1), 768:A / FT-IR 1 (1), 490:B / IR-Spectra (3), 288:F / IR-Spectra (2), 260:B / RegBook 1 (1), 541:B / Structure Index 1, 76:B:5 |
