Potassium periodate , AR,99.8% , 7790-21-8

Synonym(s):
Periodic acid potassium salt;Potassium (meta)periodate;Potassium periodate

CAS NO.：7790-21-8

Empirical Formula: H2IKO4

Molecular Weight: 232.01

MDL number: MFCD00011407

EINECS: 232-196-0

PRODUCT Properties

• Melting point: 582 °C
• Boiling point: explodes [HAW93]
• Density: 3.618
• vapor density: 7.9 (vs air)
• storage temp.: 2-8°C
• solubility: H₂O: 0.01 M at 20 °C, clear, colorless
• form: Powder/Solid
• color: White to off-white
• Specific Gravity: 3.618
• PH: pH (5g/l, 25℃) : 4.5～5.5
• Odor: Odorless
• PH Range: 4.5 - 5.5
• Water Solubility: 0.42 g/100 mL (20 ºC)
• Merck: 14,7654
• crystal system: square
• Space group: I41/a
• Lattice constant:
  • a/nm: 0.5726
  • b/nm: 0.5726
  • c/nm: 1.2607
  • α/o: 90
  • β/o: 90
  • γ/o: 90
• Stability: Stable. Strong oxidizer - contact with combustible materials may cause fire. Incompatible with organic material, combustible material, strong reducing agents, powdered metals.

Description and Uses

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.

Safety

• Symbol(GHS): GHS03,GHS05,GHS08,GHS09
• Signal word: Danger
• Hazard statements: H271-H314-H372-H400
• Precautionary statements: P210-P260-P273-P280-P303+P361+P353-P305+P351+P338
• Hazard Codes: O,Xi
• Risk Statements: 8-36/37/38
• Safety Statements: 17-26-36-37/39
• RIDADR: UN 1479 5.1/PG 2
• WGK Germany: 3
• F: 3
• TSCA: Yes
• HazardClass: 5.1
• PackingGroup: II
• HS Code: 28299000