bromek potasu, Uvasol® for IR spectrophotometry, Supelco®
Dostawca: Merck
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Uwaga
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M-Clarity™ quality level = MQ100
Potassium bromide is transparent from the near UV to long wave IR wavelengths. In IR-spectroscopy, solid samples which are difficult to melt or dissolve in any suitable IR-transmitting solvent, are analysed by grinding with potassium bromide powder, and pressing into a disc. This procedure has a high quality demand of the used potassium bromide. Potassium bromide Uvasol® is adjusted to a mean particle size of 150 μm. This is sufficient for the preparation of perfectly good pellets without the need for further pre-treatment and the associated risk of contamination. It also retains its powdery form over a period of years if stored in an airtight condition. Its physical suitability for pelletising is checked by a special application test and its chemical purity established by full spectrum FT-IR analysis.
Formuła:
KBr Temp. Wrzenia: 1435 °C (1013 hPa) Temp. topnienia: 730 °C Gęstość: 2,75 g/cm³ (20 °C) Temperatura przechowywania: Temperatura otoczenia |
Numer MDL:
MFCD00011358 Numer CAS: 7758-02-3 Numer WE (dawny EINECS): 231-830-3 Klasyfikacja Merck : 13,07701 |
Wyniki testów specyfikacyjnych
Solubility | 650 g/L (20 °C) |
Melting Point | 730 °C |
Molar Mass | 119.00 g/mol |
Bulk Density | 900 - 1000 kg/m³ |
Boiling Point | 1435 °C |
Vapor Pressure | 1.3 hPa (795 °C) |
Density | 2.75 g/cm³ (20 °C) |
pH | 5.5 - 8.5 (50 g/L, H₂O, 20 °C) |
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