Sodium sulfate anhydrous, powder, for analysis, ExpertQ®, ACS, ISO, Reag. Ph Eur

- Synonyms: Sulfuric acid sodium salt
- Na2SO4
- M = 142,04 g/mol
- CAS [7757-82-6]
- EINECS-No.: 231-820-9
- Solub. in water: (20 ºC): 160 g/l
- Melting point: 888 ºC
- Boiling point: > 890 ºC (decomposes)
- Tariff number: 2833 11 00 00
- Applications: analytical chemistry, organic solvents drying.

SPECIFICATIONS
assay: min 99 %
assay (on dried basis): 99,0 - 101,0 %
identification: passes test
appearance of solution: clear and colourless
insoluble matter: max. 0,01 %
pH (5 %, H2O): 5,2 - 8,0
acidity or alkalinity: passes test
nitrogen compounds (as N): max. 5 ppm
chlorides (Cl): max. 0,001 %
phosphates (as PO4): max. 0,001 %
arsenic (As): max. 1 ppm
calcium (Ca): max. 0,005 %
heavy metals (as Pb): max. 5 ppm
heavy metals (by ICP-OES): max. 5 ppm
iron (Fe): max. 5 ppm
magnesium (Mg): max. 0,001 %
potassium (K): max. 0,002 %
loss on ignition (800 °C): max. 0,5 %
loss on drying (130 ºC): max. 0,5 %