Kalium ferisianida

Kalium ferisianida
Serbuk kalium ferisianida
Nama
Nama IUPAC
Kalium heksasianoferat(III)
Potassium hexacyanoferrate(III)
Nama lain
Merah Prusia
Penanda
Model 3D (JSmol)
3DMet {{{3DMet}}}
ChemSpider
Nomor EC
Nomor RTECS {{{value}}}
  • InChI=1S/6CN.Fe.3K/c6*1-2;;;;/q6*-1;+3;3*+1 N
    Key: BYGOPQKDHGXNCD-UHFFFAOYSA-N N
  • InChI=1S/6CN.Fe.3K/c6*1-2;;;;/q6*-1;+3;3*+1
    Key: BYGOPQKDHGXNCD-UHFFFAOYAG
  • [K+].[K+].N#C[Fe-3](C#N)(C#N)(C#N)(C#N)C#N.[K+]
Sifat
K3[Fe(CN)6]
Massa molar 329.24 g/mol
Penampilan Serbuk merah pekat
Densitas 1.89 g/cm3, pepejal
Titik lebur 300 °C (572 °F; 573 K)
Titik didih Terurai
330 g/L ("air dingin")
464 g/L (20 °C)
775 g/L ("air panas")[1]
Kelarutan Sedikit larut dalam alkohol
Larut dalam asam
Larut dalam air
+2290.0·10−6 cm3/mol
Struktur
Monoklin
Oktahedral di Fe
Bahaya
Lembar data keselamatan MSDS
Frasa-R R20, R21, R22, R32
Frasa-S S26, S36
Titik nyala Tidak mudah terbakar
Senyawa terkait
Anion lain
Kalium ferosianida
Kation lainnya
Biru Prusia
Kecuali dinyatakan lain, data di atas berlaku pada suhu dan tekanan standar (25 °C [77 °F], 100 kPa).
N verifikasi (apa ini YaYN ?)
Referensi

Kalium ferisianida adalah sebuah senyawa anorganik dengan rumus kimia K3[Fe(CN)6] yang terdiri dari ion kalium dan ferisianida, [Fe(CN)6]3−.

Sintesis

Kalium ferisianida dihasilkan dengan mengalirkan gas klorin dalam larutan kalium ferosianida.

Penggunaan

Senyawa ini biasanya digunakan dalam cetak biru dan sianotip dalam bidang fotografi. Selain itu, kalium ferisianida juga digunakan untuk menguatkan besi dan merupakan sebuah pengoksidasi lemah dalam kimia organik.

Kalium ferisianida juga digunakan dalam larutan indikator feroksil dengan fenolftalein untuk menangkap ion Fe2+ untuk pengesanan pengoksidasian besi yang membawa kepada perkaratan. Larutan tersebut berubah warna menjadi biru (biru Prusia) dengan kehadiran ion tersebut.

Biru Prusia

Pigmen biru Prusia yang digunakan dalam cetak biru dihasilkan dengan reaksi kalium ferisianida dengan garam ion ferus (Fe2+) juga dengan garam dari ion feri (Fe3+).[2]

Referensi

  1. ^ Kwong, H.-L. (2004). "Potassium Ferricyanide". Dalam Paquette, L. Encyclopedia of Reagents for Organic Synthesis. New York: J. Wiley & Sons. doi:10.1002/047084289 (tidak aktif 2018-11-03). 
  2. ^ Dunbar, K. R.; Heintz, R. A. (1997). "Chemistry of Transition Metal Cyanide Compounds: Modern Perspectives". Progress in Inorganic Chemistry. Progress in Inorganic Chemistry. 45. hlm. 283–391. doi:10.1002/9780470166468.ch4. ISBN 9780470166468. 

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