In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Safety of 3,6-Dichloropyridazine, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 141-30-0, name is 3,6-Dichloropyridazine. In an article，Which mentioned a new discovery about 141-30-0
Synergistic Effect of Sulfur and Chalcogen Atoms on the Enhanced Refractive Indices of Polyimides in the Visible and Near-Infrared Regions
To develop thermally stable optical polymers for visible and near-infrared sensor applications, a series of sulfur-containing polyimides (PIs) with chalcogen atoms were successfully synthesized via conventional two-step polycondensation of 4,4?-[p-thiobis(phenylenesulfanyl)]diphthalic anhydride (3SDEA) with four diamines: 4,4?-oxidianiline (ODA), 4,4?-thiodianiline (TDA), 4,4?-selenodianiline (SEDA), and 4,4?-tellurodianiline (TEDA). Because of the large atomic polarizabilities of the sulfur, selenium, and tellurium atoms, the resultant PIs exhibited significantly high refractive indices in the 1.738-1.778 range at 637 nm along with a transmittance >90% at 650-1500 nm. In addition, the PIs exhibited good thermal stability, with high thermal decomposition and glass transition temperatures (Td5% > 390 C and Tg = 183-217C, respectively). Owing to the good affinity of SEDA-3SDEA for TiO2 nanoparticles, a nanocomposite film with a 3.0 wt % loading of TiO2 nanoparticles exhibited a refractive index of 1.774 at 637 nm.
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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N1770 – PubChem