描述
Identification
KMnO4
M = 158,04 g/mol
CAS [7722-64-7]
EC number: 231-760-3
Taric code: 2841 61 00
Synonyms
Permanganic acid potassium salt
Applications
analytical chemistry, laboratory reagent, synthesis of organic products, bleaching agent, photography, antiseptic.
Specifications
assay (permanganometric)………………………. min. 99,0 %
assay (iodometric)…………………………………… 99,0 – 100,5 %
identity (IR-spectrum)………………………………… passes test
appearance of solution………………………………. colourless
insoluble in water………………………………………. max. 0,1 %
chlorides (Cl)……………………………………………. max. 0,005 %
chlorides and chlorates (as Cl)……………………. max. 0,005 %
sulfates (SO4)…………………………………………. max. 0,005 %
total nitrogen (as N)…………………………………….. max. 0,005 %
copper (Cu)………………………………………………… max. 0,001 %
heavy metals (as Pb)…………………………………… max. 0,003 %
iron (Fe)…………………………………………………….. max. 0,002 %
lead (Pb)……………………………………………………. max. 0,002 %
Physical data
• Appearance: crystals, violet or dark green
• Spec. Density: 2,70 g/cm3
• Bulk density: ~ 1300 – 1600 kg/m3
• Solub. in water: (20 ºC): 64 g/l
• Melting point: > 240 ºC (decomposes)
• Vapour pressure: (20 ºC) < 0,01 hPa
• pH(20 g/l H2O, 20 ºC) ~ 7 – 9
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