Definitions
from The Century Dictionary.
- noun In chem., a compound containing seven molecules of water, as common copperas in crystals, or ferrous sulphate heptahydrate (FeSO4.7H2O).
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry A
hydrate whosesolid contains seven molecules ofwater of crystallization per molecule, or per unit cell
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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[46] Green vitriol, ferrous sulphate heptahydrate, a compound of iron, sulphur, and oxygen, crystallised with seven molecules of water, represented by the formula FeSO4.
Bygone Beliefs 1969
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Green vitriol is a heptahydrate of iron (II) sulfate or ferrous sulfate.
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Another struggles with the simple inorganic salts required to make up buffer solutions, ortho, dihydrate, heptahydrate, anhydrous.
Lecturer Notes 2009
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Sodium carbonate has three known forms of hydrates: sodium carbonate decahydrate (natron), sodium carbonate heptahydrate (not known in mineral form) and sodium carbonate monohydrate (mineral thermonatrite).
Find Me A Cure 2009
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It most commonly occurs as a crystalline heptahydrate which readily effloresces to form a white powder, the monohydrate.
Find Me A Cure 2009
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A stock solution of trace elements was prepared that contained the following (in mg/l): Zinc sulphate (heptahydrate), 143.77; Magnesium chloride
PLoS ONE Alerts: New Articles Hiren Joshi et al. 2009
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