Sodium metabisulphite, dry 97-100.5%, Puriss., meets analytical specification of BP, FCC, NF, Ph. Eur., E223, Fluka™
Supplier: Honeywell Chemicals
Certificates
About this item
CAS Number:7681-57-4
:
Formula:Na₂S₂O₅
MDL Number:MFCD00167602
:190.11 g/mol
Merck Index:12,08784
Boiling Pt: Dec. (on heating)
Melting Pt:>150 °C (dec.)
Density:2.36 g/cm³ (20 °C)
Storage Temperature:Ambient
EINECS:231-673-0
REACH:01-2119531326-45
:GHS07
:GHS05
Specification Test Results
- Assay:97.0 - 100.5 %
- Assay of Sulfur Dioxide:65.0 - 67.4 %
- pH (5 %, 20°C):3.5 - 5.0
- pH (10% solution):4.0 - 5.0
- Arsenic (As):Max. 2 ppm
- Copper (Cu):Max. 0.001 %
- Iron (Fe):Max. 10 ppm
- Mercury (Hg):Max. 1 ppm
- Lead (Pb):Max. 2 ppm
- Selenium (Se):Max. 5 ppm
- Zinc (Zn):Max. 0.001 %
- Heavy metals (as Pb):Max. 10 ppm
- Chloride (Cl):Max. 0.01 %
- Thiosulfate (S₂O₃):Max. 0.02 %
- Appearance of the solution:complying
- Residual solvents:complying
Specification Test Results
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