Title:  Guanidinium Aluminum Sulfate Hexahydrate 
CAS Registry Number:  10199-21-0 
CAS Name:  Sulfuric acid aluminum salt compd with guanidine (2:1:1) hexahydrate 
Additional Names:  GASH 
Molecular Formula:  CH18AlN3O14S2 
Molecular Weight:  387.28 
Percent Composition:  C 3.10%, H 4.68%, Al 6.97%, N 10.85%, O 57.84%, S 16.56% 
Literature References:  Prepd from an aq soln of an equimolecular mixture of guanidine sulfate and aluminum sulfate:  Ferraboschi, Proc. Cambridge Philos. Soc. 14, 473 (1908); Holden et al., Phys. Rev. 101, 962 (1956); Wieder, Proc. IRE 45, 1094 (1957).  Crystal structure:  Schein et al., J. Chem. Phys. 47, 5183 (1967).  Crystal growth:  T. A. Zarembovskaya, Zh. Fiz. Khim. 45, 2504 (1971).  Optical properties:  P. M. Nikolic et al., Fizika (Zagreb) 12, Suppl. 1, 165 (1980). 
Properties:  Large hexagonal plates belonging to the trigonal system with perfect basal cleavage.  Has ferroelectric properties.   |