Sodio carbonato anidro, standard secondario per determinazioni volumetrici, Titrasure®

- Synonyms: Anhydrous soda
- Na2CO3
- M = 105,99 g/mol
- CAS [497-19-8]
- EINECS-No.: 207-838-8
- Solub. in water: (20 ºC): 220 g/l
- Melting point: 854 ºC
- Boiling point: 1600 ºC (decomposes)
- LD 50 (oral, rat): 4090 mg/kg
- EC-Index-No.: 011-005-00-2
- GHS-signal word: Warning
- GHS-H sentences: H319
- GHS-P sentences: P280 - P264 - P305+P351+P338 - P337+P313
- Tariff number: 2836 20 00 00
- Applications: analytical chemistry, laboratory reagent, to make sodium salts, manufacture of glass, detergent, in the textile industry, photography, in the pharmaceutics industry, in food industry (E 500).

SPECIFICATIONS
assay (on dried sample): min. 99,5 %
insoluble matter: max. 100 ppm:
chloride (Cl): max. 50 ppm
phosphates (PO4): max. 10 ppm
calcium (Ca) : max. 300 ppm
iron (Fe): max. 5 ppm
heavy metals (by ICP-OES): max. 5 ppm
magnesium (Mg) : max. 50 ppm
potassium (K) : max. 50 ppm
silica (SiO2): max. 50 ppm
sulfur compounds (as SO4): max. 30 ppm
loss on drying (285 °C): max. 1,0 %

This standard solution is traceable to Standard Reference Material from NIST.