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

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.