Chlorek sodu, drugorzędowy materiał referencyjny (wzorzec wtórny) do miareczkowania, w odniesieniu do SRM z NIST, Titrasure® – SCHARLAU
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Additional information
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POBIERZ KARTĘ PRODUKTU
POBIERZ KARTĘ POZIOMU JAKOŚCI
POBIERZ KARTĘ CHARAKTERYSTYKI PRODUKTU
PRODUCENT: SCHARLAB
Sodium chloride, secondary standard
– Synonyms: Salt, Common salt, Rock salt, Sea salt
– NaCl
– M = 58,44 g/mol
– CAS [7647-14-5]
– EINECS-No.: 231-598-3
– Solub. in water: (20 ºC): 358 g/l
– Melting point: 801 ºC
– Boiling point: 1461 ºC
– Vapour pressure: (865 ºC) 1,3 hPa
– LD 50 (oral, rat): 3000 mg/kg
– Tariff number: 2501 00 31 00
– Applications: analytical chemistry, laboratory reagent, to make sodium salts, in food industry, for decreasing the melting point of water.
SPECIFICATIONS
assay (on dried sample): min. 99,0 %
insoluble in water: max. 0,005 %
pH (5 %, H2O, 25 °C): 5,0 – 9,0
bromides (Br): max. 0,01 %
chlorates and nitrates (as NO3): max. 0,003 %
iodides (I): max. 0,002 %
phosphates (as PO4): max. 5 ppm
sulfates (SO4): max. 0,004 %
barium (Ba): passes test
calcium (Ca): max. 0,002 %
heavy metals: max. 5 ppm
iron (Fe): max. 2 ppm
magnesium (Mg): max. 0,001 %
potassium (K): max. 0,005 %
This standard solution is traceable to Standard Reference Material from NIST.
