Siarczan amonu i żelaza(II), roztwór ~0,12mol/l (0,12 N) do oznaczania ChZT, zgodnie ISO 6060 – SCHARLAU
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PRODUCENT: SCHARLAB
Ammonium iron(II) sulfate, solution
– (NH4)2Fe(SO4)2·6H2O
– M = 392,13 g/mol
– CAS [7783-85-9]
– EINECS-No.: 233-151-8
– Density: 1,025 g/cm3
– Solub. in water: (20 ºC): miscible
– Tariff number: 2833 29 90 00
– Applications: determining COD.
SPECIFICATIONS
titer : 0,119 – 0,129 mol/l
uncertainty : ± 0,001
1 ml = 0,047056 g (NH4)2Fe(SO4)2·6H2O This volumetric solution was checked by means of volumetric methods using a potassium dichromate standard solution, that was also checked against Scharlau’s sodium thiosulfate standard solution. Scharlau’s volumetric standards are directly traceable to the Standard Reference Materials from NIST (National Institute of Standards and Technology, USA).
