Industrial purification of caprolactam by means of crystallization from aqueous solution
β Scribed by Prof. Dr. J. Synowiec; P. Synowiec
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 558 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0232-1300
No coin nor oath required. For personal study only.
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## Abstract A new polymorph of sodium chondroitinβ4βsulfate has been crystallized from an ethanolic aqueous solution at low pH. The crystallized spherulite specimens give considerably sharper xβray diffraction lines. The unit cell of the new polymorph is rectangular with dimensions (Γ ) __a__ = 16.0
## Abstract Microscopic processes occurring on the surface of a growing crystal or a dissolving one were observed by microcinematography. The crystals under observation were grown either in a drop of solution by evaporation or in a constantβtemperature microscope stage at a chosen supersaturation.