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LC4930 Potassium dihydrogen phosphate for analysis (<= 0.005% Na) EMSURE ACS,ISO,Reag. Ph Eur |
Order number | Packaging | Quantity | Price € |
AC31930 | Plastic bottle | 1 kg | 45.9 |
AC31930 | Fibre carton | 25 kg | Inquire |
Product information | |
Grade | ACS,ISO,Reag. Ph Eur |
Synonyms | mono-Potassium orthophosphate, Potassium biphosphate, Potassium phosphate monobasic |
Hill Formula | H2KO4P |
Chemical formula | KH2PO4 |
HS Code | 2835 24 00 |
EC number | 231-913-4 |
Molar mass | 136.08 g/mol |
CAS number | 7778-77-0 |
Chemical and physical data | |
Solubility | 222 g/l (20 °C) |
Melting point | ca.253 °C (decomposition) |
Molar mass | 136.08 g/mol |
Density | 2.34 g/cm3 (20 °C) |
Bulk density | 1200 kg/m3 |
pH value | 4.4 (50 g/l, H2O, 20 °C) |
Safety information | |
RTECS | TC6615500 |
Storage class | 10 – 13 Other liquids and solids |
WGK | WGK 1 slightly water endangering |
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). |
Transport information | |
Declaration (transport by sea) IMDG-Code | No Dangerous Good |
Declaration (transport by air) IATA-DGR | No Dangerous Good |
Toxicological data | |
LD 50 oral | LD50 rabbit > 4640 mg/kg |
Specifications | |
Assay – alkalimetric |
≥ 99.0 % |
– alkalimetric, calculated on dried substance | 98.0 – 100.5 % |
– alkalimetric over dried substance | ≥ 99.5 % |
Identity | passes test |
Clarity of solution | passes test |
Insoluble substances | ≤ 0.01 % |
pH-value (5 %; water, 25 °C) | 4.2 – 4.5 |
Chloride (Cl) | ≤ 0.0005 % |
Sulphate (SO4) | ≤ 0.003 % |
Total nitrogen (N) | ≤ 0.001 % |
Heavy metals (as Pb) | ≤ 0.001 % |
As (Arsenic) | ≤ 0.0002 % |
Fe (Iron) | ≤ 0.001 % |
Na (Sodium) | ≤ 0.005 % |
Reducing substances | passes test |
Loss on drying (130 °C) | ≤ 0.2 % |