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Synonyms: Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate
Potassium phosphate, monobasic - is the inorganic compound with the formula KH2PO4.
P 2219 (OTTO) Potassium phosphate, monobasic, for HPLC, 99.5% Cas 7778-77-0- used in nonlinear frequency conversion of laser light instead of protonated (regular) KDP due to the fact that the replacement of protons with deuterons in the crystal shifts the third overtone of the strong OH molecular stretch to longer wavelengths, moving it mostly out of the range of the fundamental line at approximately 1064 nm of neodymium-based lasers. Regular KDP has absorbances at this wavelength of approximately 4.7–6.3% per cm of thickness while highly deuterated KDP has absorbances of typically less than 0.8% per cm.
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