Kalia per-reniato

Kalia per-reniato
Plata kemia strukturo de la Kalia per-reniato
Tridimensia kemia strukturo de la Kalia per-reniato
Kristala strukturo de Kalia per-reniato
Alternativa(j) nomo(j)
  • Per-reniato de kalio
Kemia formulo
KReO4
CAS-numero-kodo 10466-65-6
ChemSpider kodo 2894851
PubChem-kodo 3661560
Fizikaj proprecoj
Aspekto blanka pulvoro
Molmaso 289301 g·mol−1
Denseco 4.887g cm−3[1]
Fandpunkto 555 °C
Bolpunkto 1370 °C
Refrakta indico  1,643
Solvebleco Akvo:11,9 g/L
Mortiga dozo (LD50) 692 mg/kg (buŝe)
Sekurecaj Indikoj
Riskoj R8 R22 R36/37/38 R50 R53
Sekureco S17 S26 S27 S36/37/39
Pridanĝeraj indikoj
Danĝero
GHS Damaĝo Piktogramo
03 – Eksplodema 07 – Toksa substanco
GHS Signalvorto Averto
GHS Deklaroj pri damaĝoj H272, H315, H319, H335
GHS Deklaroj pri antaŭgardoj P210, P220, P221, P261, P264, P271, P280, P302+352, P304+340, P305+351+338, P312, P321, P332+313, P337+313, P362, P370+378, P403+233, P405, P501[2]
Escepte kiam indikitaj, datumoj estas prezentataj laŭ iliaj normaj kondiĉoj pri temperaturo kaj premo
(25 °C kaj 100 kPa)

Kalia per-reniatoK2ReO4 estas neorganika kombinaĵo, salo de alkala metalo kaj reniata acido, senkoloraj aŭ blankaj kristaloj iomete solveblaj en akvo kaj etanolo. Ĝia kristala strukturo estas kvaredra kaj ĝi estas potenca oksidiganto. Ĝi estas uzata en spektrometrio kaj en laboratorio kiel kemia reakcianto. En farmakologio ĝi uzatas en la sintezo de la teknecio kaj renia organometala radiofarmaciaĵoj.

Sintezoj

Sintezo 1

  • Preparado de per-reniato de kalio per dissolvado de la renia oksido en solvaĵo de kalia hidroksido:

Sintezo 2

Sintezo 3

Reakcioj

Reakcio 1

  • Kalia per-reniato fandiĝas kun alkaloj, estigante perokso-reniatojn[3]:

Reakcio 2

  • La renia elemento estiĝas per rekta reduktado kun hidrogeno, unue ĉe 520 °C, kaj poste ĉe 1000 °C[4]:

Reakcio 3

  • Kalia per-reniato reakcias kun sulfida acido en ĉeesto de forta acido:

Reakcio 4

Literaturo

Referencoj

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