Sodio metabisolfito, secco 98-100.5%, Puriss. p.a. Reag. Ph. Eur., ACS, Fluka™
Fornitore: Honeywell Chemicals
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Pericolo
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Synonyms:
Disolfito di disodio, Sodio bisolfito
Formula:
Na₂S₂O₅ Peso molecolare: 190.11 g/mol Punto di ebollizione: Dec. (in riscaldamento) Punto di fusione: >150 °C (dec.) Densità: 2.36 g/cm³ (20 °C) Temperatura di stoccaggio: Ambiente |
MDL Number:
MFCD00167602 CAS Number: 7681-57-4 EINECS: 231-673-0 REACH: 01-2119531326-45 Merck Index: 12,08784 |
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Risultati del test di specificazione
Assay | 98.0 - 100.5 % |
pH (5 %, 20°C) | 3.5 - 5.0 |
Arsenic (As) | Max. 0.5 ppm |
Calcium (Ca) | Max. 0.005 % |
Cadmium (Cd) | Max. 0.005 % |
Cobalt (Co) | Max. 0.005 % |
Copper (Cu) | Max. 0.0005 % |
Iron (Fe) | Max. 5 ppm |
Potassium (K) | Max. 0.01 % |
Nickel (Ni) | Max. 0.005 % |
Lead (Pb) | Max. 0.0005 % |
Zinc (Zn) | Max. 0.001 % |
Heavy metals (as Pb) | Max. 10 ppm |
Chloride (Cl) | Max. 0.005 % |
Thiosulfate (S₂O₃) | Max. 0.01 % |
Water insoluble matter | Max. 0.005 % |
Appearance of the solution | complying |
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