1318-02-1 Usage
Preparation
Zeolite family is a well-known class of alkali aluminosilicates found in nature that
has been used as ion exchange minerals in water softening.They are hydrated systems and
give up part of their water molecules quite readily at modest temperatures but reabsorb the
moisture when exposed to moist air. A similar alkali aluminosilicate is prepared artificially
and has the empirical composition 2M2O·Al203·3SiO2·3H20; these compositions are
called "permutites" and are usually prepared with sodium as the alkali metal by adding
aluminum sulphate to soluble silicate solutions or by combining sodium aluminate with
sodium silicate. In the presence of calcium, iron and other cations, the sodium ion is displaced
by the heavier metal ions and the permutites can thus be used to remove these metal
ions from solution—for example, to remove hardness from hard water, or to "soften"
water. The permutite or artificial zeolite can be regenerated by treating with strong sodium
chloride solution, thus replacing the calcium or iron by sodium. More recently, the use of
synthetic zeolites as "molecular sieves" has become quite important in the separation
of organic compounds or as catalysts in petroleum refining. In these alkali aluminosilicates,
the pore size is determined by the alkali metal cation used.
Flammability and Explosibility
Notclassified
Check Digit Verification of cas no
The CAS Registry Mumber 1318-02-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,3,1 and 8 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1318-02:
(6*1)+(5*3)+(4*1)+(3*8)+(2*0)+(1*2)=51
51 % 10 = 1
So 1318-02-1 is a valid CAS Registry Number.
InChI:InChI=1/Al.K.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q;+1;/p-2