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Oxalic Acid ( Etanodioic Acid ) >99,9% - 500g
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Description
Oxalic Acid >99.9%
Other Names: Ethanedioic acid, Dicarboxylic acid, Oxalate precursor
Chemical Formula: C₂H₂O₄
Molar Mass: 90.03 g/mol
CAS Number: 144-62-7
Appearance: White crystalline solid
Odor: Odorless or very faint acidic smell
Physical and Chemical Properties
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Density: 1.9 g/cm³
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Melting Point: 189–191 °C (decomposes)
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Boiling Point: Decomposes before boiling
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Solubility in Water: ~9.5 g/100 mL at 20 °C (highly soluble)
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Solubility in Other Solvents: Soluble in alcohol, glycerol
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pH (1% solution): ~1.3 (strongly acidic)
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Reactivity: Forms insoluble oxalates with Ca²⁺, Pb²⁺, etc.
Applications
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Analytical Chemistry: Used in titration as a standard reducing agent
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Metal Cleaning and Pickling: Removes rust and scale from metals
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Synthesis: Intermediate in the production of fine chemicals and oxalate salts
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Dye Industry: Employed in dyeing and bleaching processes
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Photographic Processing: Used in developing agents and toning formulations
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Rare Earth Extraction: Assists in separation and precipitation processes
Safety Information
Signal Word: ⚠️ Danger
H302 (99.8%): Harmful if swallowed [Warning Acute toxicity, oral]
H312 (99.7%): Harmful in contact with skin [Warning Acute toxicity, dermal]
H318 (31.1%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
P264, P264+P265, P270, P280, P301+P317, P302+P352, P305+P354+P338, P317, P321, P330, P362+P364, and P501
Handling and Storage
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Handling: Use only with appropriate PPE and in ventilated areas. Avoid creating dust
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Storage: Store tightly closed in a cool, dry, well-ventilated place. Keep away from bases, oxidizers, and moisture
Environmental Considerations
Though biodegradable in small quantities, oxalic acid is toxic to aquatic organisms in higher concentrations and may cause local environmental harm if improperly disposed.