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EMD Millipore - 1050565000 - Potassium disulfite

EMD Millipore - 1050565000 - Potassium disulfite
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EMD Millipore - 1050565000 - Potassium disulfite

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Synonyms Potassium metabisulfite, Potassium pyrosulfite CAS number 16731-55-8
EC number 240-795-3
Grade Ph Eur, NF, E 224
Hill Formula KOS
Chemical formula KSO
Molar Mass 222.33 g/mol
HS Code 2832 20 00 Melting Point 150 °C (decomposition)
pH value 3.0 - 4.5 (50 g/l, HO, 20 °C)
Bulk density 1000 - 1300 kg/m3
Solubility 450 g/l LD 50 oral LD50 Rat 2300 mg/kg Hazard Pictogram(s)
Hazard Statement(s) H318: Causes serious eye damage.
H335: May cause respiratory irritation.
EUH031: Contact with acids liberates toxic gas.
Precautionary Statement(s) P280: Wear eye protection.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P313: Get medical advice/ attention.
Signal Word Danger
RTECS TT4920000
Storage class 10 - 13 Other liquids and solids
WGK WGK 1 slightly water endangering
Disposal 6
Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E. Hazard Symbols Irritant
Categories of danger irritant
R Phrase R 31-37-41
Contact with acids liberates toxic to respiratory of serious damage to eyes.
S Phrase S 26-39
In case of contact with eyes, rinse immediately with plenty of water and seek medical eye/face protection. Storage Store at +5°C to +30°C. Declaration (railroad and road) ADR, RID Kein Gefahrgut
Declaration (transport by air) IATA-DGR No Dangerous Good
Declaration (transport by sea) IMDG-Code No Dangerous Good Assay (iodometric) 95.0 - 101.0 %
Assay (iodometric, SO) 54.8 - 57.6 %
Identity passes test
Appearance of solution passes test
pH-value (5 %; water) 3.0 - 4.5
Chloride (Cl) ≤ 0.05 %
Heavy metals (as Pb) ≤ 0.001 %
Thiosulfate (SO) passes test
As (Arsenic) ≤ 0.0002 %
Cu (Copper) ≤ 0.0025 %
Fe (Iron) ≤ 0.0005 %
Hg (Mercury) ≤ 0.0001 %
Pb (Lead) ≤ 0.0002 %
Se (Selenium) ≤ 0.00025 %
Zn (Zinc) ≤ 0.0025 %
Residual solvents (Ph Eur/USP/ICH) Excluded by manufacturing process
Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*).
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