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Physicochemical Information
Density	2.17 g/cm3 (20 °C)
Melting Point	>100 °C (decomposition)
pH value	8.4 – 8.6 (99 g/l, H₂O, 20 °C)
Solubility	362 g/l

Toxicological Information
LD 50 oral	LD50 Rat > 2000 mg/kg

Safety Information according to GHS
RTECS	FG1840000
Storage class	10 – 13 Other liquids and solids
WGK	WGK 1 slightly hazardous to water
Disposal	14 Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535).

Storage and Shipping Information
Storage	Store at +15°C to +25°C.

Transport Information
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

Specifications
Assay (acidimetric; dried substance)	99.7 – 100.5 %
Assay (acidimetric)	≥ 99.5 %
Insoluble matter	≤ 0.01 %
Chloride (Cl)	≤ 0.001 %
Phosphate (PO₄)	≤ 0.0005 %
Phosphate and Silicate (as SiO₂)	≤ 0.001 %
Sulfate (SO₄)	≤ 0.001 %
Total sulfur (as sulfate)	≤ 0.003 %
Total nitrogen (N)	≤ 0.001 %
Heavy metals (as Pb)	≤ 0.0005 %
Al (Aluminium)	≤ 0.0005 %
Ca (Calcium)	≤ 0.0005 %
Fe (Iron)	≤ 0.0005 %
Mg (Magnesium)	≤ 0.001 %
Na (Sodium)	≤ 0.02 %
NH₄ (Ammonium)	≤ 0.0005 %
Corresponds to ACS

Merck 104854 0500 Potassium Hydrogen Carbonate 500 GR.