The experiment data on the solubility and metastable zone width (MSZW) of sodium dichromate dihydrate have been determined in the temperature range from (290.45 to 319.76) K using the conventional polythermal method by turbidity monitoring technique. Based on the solubility data, the dissolution enthalpy and entropy of sodium dichromate dihydrate were calculated by the van t Hoff equation. Two approaches were used to estimate the nucleation kinetics of sodium dichromate dihydrate from the MSZW data, the self-consistent Nyvlt-like equation and the novel equation of three-dimensional nucleation theory. The notable factors affecting MSZW of sodium dichromate dihydrate such as cooling rate, initial composition, stirring rate, and presence of seed particles have been evaluated in this paper. It was observed that the MSZW of sodium dichromate dihydrate has an obvious decrease with the increase of initial composition, rotation frequency of stirring, and the mass of seed particles, respectively. Nevertheless, the MSZW becomes wider by enhancing the cooling rate and the diameter of seed particles.
Compounds
#
Formula
Name
1
H2O
water
2
Cr2Na2O7
sodium dichromate
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.