Kaliumperiodat Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R8:Feuergefahr bei Berührung mit brennbaren Stoffen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S17:Von brennbaren Stoffen fernhalten.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
colourless crystals or white crystalline powder
Physikalische Eigenschaften
Colorless tetragonal crystals; density 3.618 g/cm
3; melts at 582°C; slightly soluble in water at ordinary temperatures, 0.42 g/100mL at 20°C; moderately soluble in hot water, 4.4 g/100mL at 80°C.
Verwenden
For the colorimetric determination of Mn (oxidizes manganese compounds to permanganates), as oxidizing agentPotassium periodate is used as an oxidizing agent in organic synthesis and an analytical reagent for the determination of potassium and cerium. It is also used in colorimetric estimation of manganese. It reacts with ammonium cerium(IV) nitrate to prepare tris[trinitratocerium(IV)] paraperiodate which finds application as an oxidant.
synthetische
Potassium periodate can be prepared by oxidation of potassium iodate with a powerful oxidizing agent such as potassium permanganate, chlorine or bromine in basic solution:
IO
3ˉ+ Cl
2+ 2OHˉ→IO
4ˉ+ 2Clˉ+ H
2O
Also, the salt may be prepared by electrolysis.
Vorbereitung Methode
Potassium periodate, KlO4, white solid, formed by electrolysis of potassium iodate under proper conditions.
Allgemeine Beschreibung
Potassium (meta)periodate exhibits strong oxidizing properties in acidic medium.
Hazard
Fire risk in contact with organic materials,
strong oxidizing agent. Strong irritant to tissue.
läuterung methode
Crystallise it from distilled water. Its solubility in H2O is 0.2% at 0o, 0.4% at 20o, 4.4% at 80o. and 7.9% at 100o. [Hill Inorg Synth I 171 1939, Schmeisser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 325 1963.]
Kaliumperiodat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
