Hi Sonny, Good logical question. 1) Yes Calcium lactate is definitely soluble in water, at the rate of 4.8g/100ml (10c), 5.8/100/ml (20c), 6.7/100ml (25c), 8.7g/100ml @(30c), and 7.9g/100ml @30c. 2) While the Na salts (soaps) of fatty acids are highly soluble, the Ca, and Mg salts (soaps) are typically described as insoluble. But, to be scientifically accurate, they do have a VERY slight, barely measurable degree of solubility. Solubility depends primarily on the length of the fatty acid, and the number of double bonds. The solubility of highly saturated magnesium stearate (12:0) is only 0.004g/100ml @25, while the mono-unsaturated oleic acid, 18:1 (18 carbons:1 double bond), is slightly more soluble. Remember, also, while Na soaps contain only ONE fatty acid, Ca soaps contain TWO fatty acids.Im wondering if anyone has any experience using Calcium Lactate in soap making (CP or HP). Does it break down to lactic acid like Sodium Lactate does?