Oxalic acid dihydrate ACS PurReagent, 99%
ACS PurReagent
Synonym: Ethanedioic acid dihydrate
Linear Formula:
C2H2O4 · 2H2O
Molecular Weight: 126.07 g/mol
CAS Number: 6153-56-6
Properties
| Vapour pressure | <0.01 mmHg ( 20 °C) |
| Water Solubility | 100 g/L at 25 °C |
| Assay Purity | >=99% |
| Refractive index | No data available |
| B pt. | 149 - 160 °C at 1013 hPa |
| M pt. | 104-106°C(lit.) |
| Density | 1.65 g/cm3 at 20 °C |
| Form | Solid |
Safety Information
| Hazard Statement(s) | H302 + H312-H318 |
| Precautionary Statement | P264-P280-P301 + P312-P302 + P352 + P312-P305 + P351 + P338-P362 + P364 |
| GHS Pictogram |
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| Signal word | Danger |
| HS Code | 29171100 |
| Flash point | 157°C |
| Storage Temp. | Room Temperature |
| Storage Class | 11 - Combustible Solids |
| UN Number | 3261 |
Description
Application
It is widely used for rust and scale removal in metal cleaning as a reducing agent in chemical synthesis in bleaching textileswood and as a mordant in dyeing.
Purpose
Its primary purpose is chelation of metal ions (especially Fe Fe) for descaling and purification leveraging strong dicarboxylic acidity (pKa 1.25 pKa 4.14) to form soluble complexes.
General Description
Oxalic acid dihydrate is a white crystalline solid with molecular weight 126.07 gmol density 1.65 gcm3 melting point 101102C (decomposes at 157C) and high water solubility (100 gL at 20C) featuring two water molecules in its monoclinic crystal lattice (space group P2n).
Documents
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