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105108 Potassium dihydrogen phosphate

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Replacement Information
Replacement InformationIn North America 1.05108.0050 replaces and is identical to 5108-1
In North America 1.05108.0500 replaces and is identical to 5108-2

Key Specifications Table

CAS #EC NumberHill FormulaChemical FormulaMolar Mass
7778-77-0231-913-4H₂KO₄PKH₂PO₄136.09 g/mol


Catalog NumberPackaging Qty/Pack
1051080050 Plastic bottle 50 g
1051080250 Plastic bottle 250 g
1051080500 Plastic bottle 500 g
Catalogue Number105108
Replaces5108-1; 5108-2; 5108
Synonymsmono-Potassium orthophosphate, Potassium biphosphate, Potassium phosphate monobasic
Product Information
CAS number7778-77-0
EC number231-913-4
Hill FormulaH₂KO₄P
Chemical formulaKH₂PO₄
Molar Mass136.09 g/mol
HS Code2835 24 00
Quality LevelMQ100
ApplicationPotassium dihydrogen phosphate anhydrous 99.995 Suprapur®. CAS No. 7778-77-0, EC Number 231-913-4.
Biological Information
Physicochemical Information
Density2.33 g/cm3 (21.5 °C)
Melting Point252.6 °C (decomposition)
pH value4.2 - 4.6 (20 g/l, H₂O, 20 °C)
Vapor pressure<0.1 hPa (25 °C)
Bulk density1200 kg/m3
Solubility208 g/l
Materials Information
Toxicological Information
LD 50 dermalLD50 Rabbit > 4640 mg/kg
Safety Information according to GHS
Storage class10 - 13 Other liquids and solids
WGKWGK 1 slightly hazardous to water
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).
Safety Information
Product Usage Statements
Storage and Shipping Information
StorageStore at +2°C to +30°C.
Packaging Information
Transport Information
Declaration (railroad and road) ADR, RIDKein Gefahrgut
Declaration (transport by air) IATA-DGRNo Dangerous Good
Declaration (transport by sea) IMDG-CodeNo Dangerous Good
Supplemental Information
Purity (metallic)≥ 99.995 %
Assay (acidimetric)≥ 99.5 %
Spec. Absorbance A at 260 nm (2 cm, 10%, water)≤ 0.010
Chloride (Cl)≤ 5 ppm
Sulfate (SO₄)≤ 30 ppm
As (Arsenic)≤ 0.1 ppm
Ba (Barium)≤ 5.0 ppm
Ca (Calcium)≤ 0.50 ppm
Cd (Cadmium)≤ 0.005 ppm
Ce (Cerium)≤ 0.010 ppm
Co (Cobalt)≤ 0.010 ppm
Cu (Copper)≤ 0.005 ppm
Eu (Europium)≤ 0.010 ppm
Fe (Iron)≤ 0.10 ppm
Hg (Mercury)≤ 0.05 ppm
La (Lanthanum)≤ 0.010 ppm
Mg (Magnesium)≤ 0.50 ppm
Mn (Manganese)≤ 0.010 ppm
Na (Sodium)≤ 20.0 ppm
Ni (Nickel)≤ 0.010 ppm
Pb (Lead)≤ 0.005 ppm
Sm (Samarium)≤ 0.010 ppm
Sr (Strontium)≤ 0.50 ppm
Tl (Thallium)≤ 0.01 ppm
Y (Yttrium)≤ 0.010 ppm
Yb (Ytterbium)≤ 0.010 ppm
Zn (Zinc)≤ 0.005 ppm
Global Trade Item Number
Catalog Number GTIN
1051080050 04022536061177
1051080250 04054839515262
1051080500 04022536061184