7787-39-5 Usage
Description
Barium Sulfite can be
prepared by reacting sodiumsulfite with bariumchloride:
BaCl2＋ Na2SO3→BaSO3＋ 2NaCl
Barium Sulfite occurs as white,
monoclinic crystals with a density of 4.44 g/cm3. Its
solubility in water is low (0.001125 g/100 ml) and it is
insoluble in ethanol. When heated, it decomposes at
480°C to the oxide and SO2 gas.
It has been used as a weighting material on oil-drilling
rigs to prevent “blow out” during drilling operations.
This salt is used for such purposes, presumably
because of its ability to absorb SO2 and H2S gases trapped in the rocks as drilling proceeds. The demand for barium sulfite is low.
Barium sulfite is available in limited quantities,
commercially.
Chemical Properties
White powder, decomposed by heat. Soluble in dilute hydrochloric acid; insoluble in water.
Uses
In paper manufacture.
Check Digit Verification of cas no
The CAS Registry Mumber 7787-39-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,8 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7787-39:
(6*7)+(5*7)+(4*8)+(3*7)+(2*3)+(1*9)=145
145 % 10 = 5
So 7787-39-5 is a valid CAS Registry Number.
InChI:InChI=1/Ba.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/p-2
