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Calcium nitrate is a hygroscopic compound, which means it absorbs water from the atmosphere. It is highly soluble in water and alcohol, and the resulting solution is neutral in pH. Calcium nitrate has a molecular weight of 164.09 g\/mol, and its melting point is 561 \u00b0C.<\/p>\n
It is widely used in the construction industry due to its ability to accelerate the setting time of concrete. The compound acts as a catalyst for the hydration process of cement, which results in faster hardening and increased strength.<\/p>\n
Calcium nitrate is added to concrete to accelerate the setting process, reducing the time required for construction projects. When added to fresh concrete, calcium nitrate reacts with the calcium hydroxide released during the hydration process, forming calcium nitrite. This compound then reacts with the unreacted cement particles, accelerating the formation of the calcium silicate hydrate (C-S-H) gel that gives concrete its strength.<\/p>\n