SODIUM DISULFITE (SODIUM METABISULFITE)

Code: 1065281000 D2-231

Not available outside of the UK & Ireland.

Analysis Note

Assay (iodometric): 98.0 - 100.5 %Identity: passes testAppearance of solution: passes testpH-value (5 %; water): 3.5 - 5.0Insoluble matter: ≤ 0.005 %Chlor...

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Not available outside of the UK & Ireland.

Analysis Note

Assay (iodometric): 98.0 - 100.5 %Identity: passes testAppearance of solution: passes testpH-value (5 %; water): 3.5 - 5.0Insoluble matter: ≤ 0.005 %Chloride (Cl): ≤ 0.005 %Thiosulfate (S₂O₃): ≤ 0.05 %: passes testHeavy metals (as Pb): ≤ 0.001 %As (Arsenic): ≤ 0.0001 þ (Iron): ≤ 0.0005 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Packaging

50 kg in Fibre carton

1, 5 kg in Plastic bottle

500 g in Plastic bottle

agency	reag. Ph. Eur.
anion traces	chloride (Cl^-): ≤0.005%, thiosulfate (S₂O₃^2-): ≤0.05%passes test
assay	98.0-100.5% (iodometric)
bulk density	1000‑1200 kg/m³
cation traces	Fe: ≤0.0005%, heavy metals (as Pb): ≤0.001%, As: ≤0.0001%
density	2.36 g/cm³ at 20 °C
form	powder
grade	ACS reagent
impurities	≤0.005% Insoluble matter
InChI key	LDTLADDKFLAYJA-UHFFFAOYSA-L
InChI	1S/2Na.H2O5S2/c;;1-6(2)5-7(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2
mp	150 °C (decomposition)
pH	3.5-5 (20 °C, 50 g/L in H₂O)
potency	>2000 mg/kg LD₅₀, skin (Rat), 1540 mg/kg LD₅₀, oral (Rat)
product line	EMSURE^®
Quality Level	300
solubility	650 g/L
storage temp.	2-30°C