A novel red pyrotechnics colorant MOF [Sr₂(DTDA)(H₂O)₆]_n (1) was synthesized from one high-nitrogen content ligand with carboxylic acid, 2,2"-(3,3"-azo-bis(1H-1,2,4-triazol-5-yl)) diacetic acid (H₂DTDA) and strontium hydroxide octahydrate under hydrothermal condition. The structure of compound 1 was characterized by Fourier transform infrared (FT-IR), single crystal X-ray diffraction (XRD), powder X-ray diffraction (PXRD) and elemental analysis. Its thermal decomposition temperatures were measured by thermogravimetry (TG) and differential scanning calorimetry (DSC), and the sensitivities were tested by BAM standard methods. A pyrotechnic formulation was designed, and the feasibility of applying compound 1 to a red pyrotechnic colorant was analyzed. It is showed that the structure of compound 1 is two-dimensional (2D) structure and there are hydrogen bonds between layers. Compound 1 can also be obtained by a large-scale hydrothermal experiment. The low impact sensitivity (IS = 80 J) and friction sensitivity (FS > 360 N) indicate that compound 1 is an insensitive energetic material and can be used as a red colorant in pyrotechnic formulation.