DESCRIPTION Crystal calcium nitrate suitable for tomatoes is a highly soluble source of two plant nutrients. It contains 11.75% nitrogen and 23.55% calcium that can be absorbed quickly by tomatoes.It is fully water soluble fertilizer which dissolves quickly in water without any residues.Calcium nitrate 4-hydrate can help prevent blossom end rot in tomatoes Introduction Product Name:Calcium Nitrate Tetrahydrate Apperance:Colorless transparent crystal CAS No.:13477-34-4 Formula:Ca(NO3)2.4H2O Formula Weight:236.15 Specification Index Name Index Value Actual Value Purity %≥ 99.0 99.05 Total N % ≥ 11.5 11.75 CaO % ≥ 23.0 23.55 Insoluble substance in water %≤ 0.10 0.007 Range of PH value 4.5-6.5 4.9 Application Crystal calcium nitrate suitable for tomatoes is a highly soluble source of two plant nutrients. It contains 11.75% nitrogen and 23.55% calcium that can be absorbed quickly by tomatoes. Calcium Nitrate 4-hydrate is used primarily in vegetable gardens, particularly for tomatoes and peppers, in the prevention of blossom end rot.