Potassium disulphate, EMSURE® ACS for analysis, Supelco®

Supplier: Merck
Danger

Synonyms: Potassium disulphate (Potassium pyrosulphate), Dipotassium disulphate, Potassium pyrosulphate

M-Clarity™ quality level = MQ300

1.05107.1000 1.05107.5000 1.05107.9050
1.05107.1000EA 221 GBP
1.05107.1000 1.05107.5000 1.05107.9050
Potassium disulphate, EMSURE® ACS for analysis, Supelco®
Potassium disulphate
Formula: K₂O₇S₂
MW: 254,32 g/mol
Melting Pt: ∼325 °C
Density: 2,51 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00011385
CAS Number: 7790-62-7
EINECS: 232-216-8
UN: 2923
ADR: 8 (6.1),I
Merck Index: 13,07749

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Specification Test Results

Assay (acidimetric, as K₂S₂O₇) 97.5 - 100.0 %
Acidity (as H₂SO₄) 37.5 - 38.6 %
Insoluble and by ammoniumhydroxide precipitated matter ≤ 0.01 %
Chloride (Cl) ≤ 0.0005 %
Phosphate (PO₄) ≤ 0.001 %
Total nitrogen (N) ≤ 0.002 %
Heavy metals (as Pb) ≤ 0.001 %
Al (Aluminium) ≤ 0.001 %
As (Arsenic) ≤ 0.0005 %
Ca (Calcium) ≤ 0.002 %
Fe (Iron) ≤ 0.0005 %
Mg (Magnesium) ≤ 0.0005 %
Na (Sodium) ≤ 0.01 %
Water (H₂O) ≤ 2.5 %
Conforms ACS

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