chemical composition of Mrs. Wage's Pickling Lime (kalkwasser substitute?)

Hi folks;

I've been considering using Mrs. Wage's Pickling Lime as a substitute
for powdered kalkwasser, which is more expensive, and Mrs. Wage's
Pickling Lime even comes in a nifty resealable plastic container now.

I got the chemical composition of MWPL ... anyone see a problem here
after the CaOH2? Percentages seem pretty low but just want to make
sure.

97.4% Ca (OH)2
1.8% Ca03
1% Magnesium & Alkali Salts
.4% Acid Insoluble Substances
.02% CaS04
.03% Fe203
.2% Al203
.01% C02

Thanks in advance.