Potassium periodate is an inorganic salt with the molecular formula KIO₄. It is composed of a potassium ion (K⁺) and a periodate ion (IO₄⁻) and is also known as the potassium salt of periodic acid. Unlike some other periodates, it occurs in the metaperiodate form. Potassium periodate is a strong oxidizing agent that supports selective oxidation reactions. In alkaline media, it can generate singlet oxygen through a non-photochemical process. It is widely used in organic synthesis and analytical chemistry including spectrophotometric and colorimetric determinations of selected compounds and metal ions.
CAS No.: 7790-21-8
Synonyms: Potassium Metaperiodate, periodic acid potassium salt, potassium (meta)periodate.
| Physical Properties | |
| Chemical formula | KIO4 |
| IUPAC Name | potassium periodate |
| Molecular weight | 230 g/mol |
| Solubility | Soluble in water |
| Density | 3.62 g/cm3 |
| Appearance | Colorless crystal or white crystalline powder |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | Colorless |
| Physical State | Solid |
| Melting Point | 582 °C |
| Ph Value | 4.5-5.5 |
| Odor | Odorless |
| Pictograms : |      |
| Hazard Statements : | H271: May cause fire or explosion; strong oxidiser H314: Causes severe skin burns and eye damage H335: May cause respiratory irritation H372: Causes damage to organs (thyroid gland) through prolonged or repeated exposure (if swallowed) H400: Very toxic to aquatic life |
| Precautionary Statements: | P210: Keep away from heat, sparks, open flames, hot surfaces. No smoking P260: Do not breathe dust or mists P273: Avoid release to the environment P280: Wear protective gloves/protective clothing/eye protection/face protection P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing |
Potassium periodate is an inorganic salt with the molecular formula KIO₄. It is composed of a potassium ion (K⁺) and a periodate ion (IO₄⁻) and is also known as the potassium salt of periodic acid. Unlike some other periodates, it occurs in the metaperiodate form. Potassium periodate is a strong oxidizing agent that supports selective oxidation reactions. In alkaline media, it can generate singlet oxygen through a non-photochemical process. It is widely used in organic synthesis and analytical chemistry including spectrophotometric and colorimetric determinations of selected compounds and metal ions.
CAS No.: 7790-21-8
Synonyms: Potassium Metaperiodate, periodic acid potassium salt, potassium (meta)periodate.
| Physical Properties | |
| Chemical formula | KIO4 |
| IUPAC Name | potassium periodate |
| Molecular weight | 230 g/mol |
| Solubility | Soluble in water |
| Density | 3.62 g/cm3 |
| Appearance | Colorless crystal or white crystalline powder |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | Colorless |
| Physical State | Solid |
| Melting Point | 582 °C |
| Ph Value | 4.5-5.5 |
| Odor | Odorless |
| Pictograms : | |
| Hazard Statements : | H271: May cause fire or explosion; strong oxidiser H314: Causes severe skin burns and eye damage H335: May cause respiratory irritation H372: Causes damage to organs (thyroid gland) through prolonged or repeated exposure (if swallowed) H400: Very toxic to aquatic life |
| Precautionary Statements: | P210: Keep away from heat, sparks, open flames, hot surfaces. No smoking P260: Do not breathe dust or mists P273: Avoid release to the environment P280: Wear protective gloves/protective clothing/eye protection/face protection P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing |
Potassium periodate is mainly used as a strong oxidizing agent in organic synthesis and analytical chemistry. It is also applied in carbohydrate studies, metal-ion analysis and specialized slurries for metal surface polishing.
Potassium periodate is also known as potassium metaperiodate. It has the molecular formula KIO₄ and consists of potassium (K⁺) and periodate (IO₄⁻) ions.
Potassium periodate acts as an oxidizing and chromogenic reagent in analytical methods. It is used in the determination of manganese and certain other elements and in the spectrophotometric estimation of phenothiazine compounds.
