Effect of EDTA on the metastable zone width of ADP

Dielectric and Optical Characterization of Boron Doped Ammonium Dihydrogen Phosphate

“…ADP belongs to scalenohedral class of tetragonal crystal systems. ADP has unit cell parameters of a = b = 7.510 Å and c = 7.564 Å [6,7]. It is known that, very little amount of additives can strongly suppress the metal ion impurities and promote the crystal quality.…”

Effect of Amino Acid Additives on Crystal Growth Parameters and Properties of Ammonium Dihydrogen Phosphate Crystals

“…Some dopants are added to suppress the effect of metal ion impurities on ADP and KDP crystals. For example, EDTA and KCl reduces the effect of metal ion impurities and enhance the metastable zone width and increases the growth rate of the crystals (Rajesh et al, 2000;Podder 2002;Meenakshisundaram et al, 2009). The addition of such kind of dopants does not remove the impurities present in the solution; it just reacts with the metal ions and is making complexes.…”

Effect of impurities on metastable zone width for the growth of ammonium oxalate monohydrate crystals from aqueous solutions

“…It was also observed [1][2][3][4] that organic compounds, like EDTA (ethylene diamine tetraacetic acid), urea and thiourea, lead to an increase in the metastable zone width and improvement in the quality of several crystals. In most of the cases, an increase in the metastable zone width with the concentration of impurities has been reported.…”

“…During the last few years it has been reported [1][2][3][4][5][6][7] that metastable zone width for the crystallisation of a variety of compounds growing from solutions changes with the addition of different impurities. It was also observed [1][2][3][4] that organic compounds, like EDTA (ethylene diamine tetraacetic acid), urea and thiourea, lead to an increase in the metastable zone width and improvement in the quality of several crystals.…”