Physicochemical properties of glyoxal and its commercially employed aqueous solution (40%).
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Property |
Value |
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Glyoxal |
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Relative molecular mass |
58.04 |
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Density (g/cm3) |
1.14 (20 °C) |
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Refractive index |
1.3826 (20 °C) |
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Melting point (°C) |
15 |
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Boiling point (°C) |
50.4 (101.3 kPa) |
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Vapour pressure (kPa) |
29.33 (~20 °C) |
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n-Octanol/water partition coefficient (log Kow) |
-1.65 (calculated) |
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|
-0.85 (measured) |
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Water solubility (g/litre) |
600 (25 °C) |
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Henry's law constant |
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(Pa·m3/mol) |
<3.38 × 10-4 (25 °C, measured) |
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(dimensionless) |
<1.36 × 10-7 |
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40% aqueous solution of glyoxal |
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Vapour pressure (kPa) |
2.03 (20 °C) |
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Density (g/cm3) |
1.27 (20 °C) |
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Viscosity (mPa·s) |
5-10 (23 °C) |
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Setting point (°C) |
~ -10 |
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pH of aqueous solution |
2.1-2.7 |
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