Identification
Na2SO4
M = 142,04 g/mol
CAS [7757-82-6]
EC number: 231-820-9
Taric code: 2833 11 00
Synonyms
Sulfuric acid sodium salt
Applications
analytical chemistry, organic solvents drying.
Specifications
| assay……………………….. min. 99 % identity………………………… passes test appearance of solution (10 %, H2O)……….. passes test insoluble in water……… max. 0,01 % pH (5 %, H2O)…………………… 5,2 – 8,0 acidity or alkalinity………. passes test chlorides (Cl)…………. max. 0,001 % phosphates (as PO4)……… max. 0,001 % total nitrogen (as N)……. max. 0,0005 % | arsenic (As)………………… max. 1 ppm calcium (Ca)……………. max. 0,005 % heavy metals (as Pb)……………… max. 0,0005 % iron (Fe)…………………….. max. 5 ppm magnesium (Mg)………. max. 0,001 % potassium (K)……………. max. 0,002 % zinc (Zn)……………………. max. 0,002 % loss on ignition (600 °C)…………. max. 0,5 % |
Packaging
- 1000 g
Physical data
- Appearance: crystals, colourless or white
- Spec. Density: 2,70 g/cm3
- Bulk density: ~ 1400 – 1600 kg/m3
- Solub. in water: (20 ºC): 160 g/l
- Melting point: 888 ºC
- Boiling point: > 890 ºC (decomposes)
- pH(50 g/l H2O, 20 ºC) 5 – 8
- Hygroscopic