Oxalic acid dihydrate
SIAL/O0376 - ReagentPlus®, ≥99.0% (GC)
Synonym: Ethanedioic acid dihydrate
CAS Number: 6153-56-6
Empirical Formula (Hill Notation): C2H2O4 · 2H2O
Molecular Weight: 126.07
EC Number: 205-634-3
MDL Number: MFCD00149102
Linear Formula: HO2CCO2H · 2H2O
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: O0376-10MG.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: O0376-100G
This image depicts SKU: O0376-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: O0376-500G
This image depicts SKU: O0376-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: O0376-1KG
This image depicts SKU: O0376-1KG
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: O0376-3KG
This image depicts SKU: O0376-3KG
| assay | ≥99.0% (GC) |
| InChI | 1S/C2H2O4.2H2O/c3-1(4)2(5 |
| InChI key | GEVPUGOOGXGPIO-UHFFFAOYSA |
| mp | 104-106 °C (lit.) |
| product line | ReagentPlus® |
| Quality Level | 200  |
| SMILES string | [H]O[H].[H]O[H].OC(=O)C(O |
| vapor density | 4.4 (vs air) |
| vapor pressure | <0.01 mmHg ( 20 °C) |
| Application: | 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. |
| General description: | Oxalic acid dihydrate (OAD) crystals are reported to be monoclinic with P21/n space group. The electron density of OAD has been obtained using X-ray diffraction studies under high resolution. |
| Legal Information: | ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 1, 3 kg in poly bottle |
| Packaging: | 10 mg in glass bottle |
| Packaging: | 100, 500 g in poly bottle |
| Symbol |   GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H302 + H312 - H318 |
| Precautionary statements | P264 - P270 - P280 - P301 + P312 - P302 + P352 + P312 - P305 + P351 + P338 |
| Hazard Codes | Xn |
| Risk Statements | 21/22-41 |
| Safety Statements | 26-36-37-39 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Purity | ≥99.0% (GC) |
| mp | 104-106 °C (lit.) |
| UNSPSC | 12352100 |