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45%potassium sulfite
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    Special Cyano Complex

Cupric ferrocyanide

Synonyms: hexacyanoferrate(4-)dicopper(2+); cupric hexacyanoferrate(II);
CAS No.: [13601-13-3]                    EINECS NO.: 237-080-3
Molecular Formula and Weight:C6Cu2FeN6=339.05.
Heptahydrate:Cu2[Fe(CN)6]·7H2O  =465.15

Nature : red-brown powder. Heat to 120 C above decomposition. Can soluble nitrate, ammonium hydroxide and potassium cyanide solution. Do not dissolve in water and acid. Toxic! By copper cyanide ion complexation with the ferrous form hexacyanoferrate copper, obtained by the separation. Glazed pottery and for the camera.                                                    Specification:

Item

Index %

Appearance

Reddish-brown powder

Content [Cu2Fe(CN)6·7H2O]

≥98

Sulphate   [ SO42- ]

≤0.5

Chloride[CL]

≤0.5

Application: As pigment; in photographic toning baths; to lower electric resistance of soil and electrode-to-soil contacts.  

 
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