Sodium iodate
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Sodium iodate (NaIO3) is the sodium salt of iodic acid. Sodium iodate is an oxidizing agent. It has several uses.
Quick Facts Names, Identifiers ...
Names | |
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Other names
Iodic acid, sodium salt | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider |
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ECHA InfoCard | 100.028.793 |
EC Number |
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KEGG | |
PubChem CID |
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RTECS number |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
INaO3 | |
Molar mass | 197.891 g·mol−1 |
Appearance | White orthorhombic crystals |
Odor | Odorless |
Density | 4.28 g/cm3 |
Melting point | 425 °C (797 °F; 698 K) (anhydrous) decomposes[1] 19.85 °C (67.73 °F; 293.00 K) (pentahydrate) |
2.5 g/100 mL (0 °C) 8.98 g/100 mL (20 °C) 9.47 g/100 mL (25 °C)[2] 32.59 g/100 mL (100 °C)[3] | |
Solubility | Soluble in acetic acid Insoluble in alcohol |
Solubility in dimethylformamide | 0.5 g/kg[2] |
−53.0·10−6 cm3/mol | |
Structure | |
Orthorhombic | |
Thermochemistry | |
Heat capacity (C) |
125.5 J/mol·K[2] |
Std molar entropy (S⦵298) |
135 J/mol·K[2] |
Std enthalpy of formation (ΔfH⦵298) |
−490.4 kJ/mol[2] |
Gibbs free energy (ΔfG⦵) |
35.1 kJ/mol[2] |
Hazards | |
GHS labelling: | |
[4] | |
Danger | |
H272, H302, H317, H334[4] | |
P220, P261, P280, P342+P311[4] | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
108 mg/kg (mice, intravenous)[2] |
Related compounds | |
Other anions |
Sodium iodide Sodium periodate Sodium bromate Sodium chlorate |
Other cations |
Potassium iodate Silver iodate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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