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Catalog Number
ACM7778770
Product Name
Potassium dihydrogen orthophosphate(v)
Structure
CAS
7778-77-0
Category
Metal & Ceramic Materials
Description
DryPowder; Liquid; OtherSolid; PelletsLargeCrystals;Odourless, colourless crystals or white granular or crystalline powder;COLOURLESS CRYSTALS OR WHITE CRYSTALLINE POWDER.
Freely soluble in water. Insoluble in ethanol;Soluble in about 4.5 parts water; insoluble in alcohol;Solubility: 25 g/100 cc water at 25 °C. Slightly soluble in ethanol;Solubility in water, g/100ml: 22
Color/Form
Colorless crystals or white granular powder;White tetragonal crystals
Complexity
61.9
Covalently-Bonded Unit Count
2
EC Number
231-913-4;231-913-4
Exact Mass
135.932777g/mol
Formal Charge
0
H-Bond Acceptor
4
H-Bond Donor
2
Heavy Atom Count
6
ICSC Number
1608
Monoisotopic Mass
135.932777g/mol
Odor
Odorless
Other Experimental
Permanent in air. At 400 °C loses water, forming metaphosphate;pH = 4.5 (1% aqueous solution). Forms ferroelectric crystals (Critical temperature = -151 °C);Solubility: 18 g/100g water /Monopotassium phosphate anhydrous/;At ordinary temperatures, monopotassium phosphate is so far above its Curie point as to give piezoelectric effects in which the emf is proportional to the distorting force. There is virtually no hysteresis.;Curie point: 123 K; Spontaneous polarization: 4.7 uC/cu cm at 110 K
Refractive Index
Index of refraction: 1.5093, 1.4682, both at 589 nm