Products: T series
| Compound | Formula |
| Tantalum (III) bromide | TaBr3 |
| Tantalum (V) bromide | TaBr5 |
| Tantalum (V) chloride | TaCl5 |
| Tantalum (V) iodide | TaI5 |
| Telluric acid | H6TeO6 |
| Tellurous acid | H2TeO3 |
| Tellurium (II) bromide | TeBr2 |
| Tellurium (IV) bromide | TeBr4 |
| Tellurium (II) chloride | TeCl2 |
| Tellurium (IV) chloride | TeCl4 |
| Tellurium (II) iodide | TeI2 |
| Tellurium (IV) iodide | TeI4 |
| Tellurium (IV) oxide | TeO2 |
| Thallium (I) acetate | TlC2H3O2 |
| Thallium (I) arsenide | Tl3As |
| Thallium (I) bromide | TlBr |
| Thallium (III) bromide | TlBr3 |
| Thallium (I) chloride | TlCl |
| Thallium (III) chloride | TlCl3 |
| Thallium (I) formate | Tl(CHO2) |
| Thallium (I) fluoride | TlF |
| Thallium (I) hydroxide | TlOH |
| Thallium (I) iodide | TlI |
| Thallium (III) iodide | TlI3 |
| Thallium (I) malonate | Tl(C3H3O4) |
| Thallium (I) orthomolybdate | Tl2MoO4 |
| Thallium (I) nitrate | TlNO3 |
| Thallium (I) selenite | Tl2SeO3 |
| Thallium (I) tellurite | Tl2TeO3 |
| Thallium (I) orthotungstate | Tl2WO4 |
| Thulium Compounds (see Rare Earth compounds) |
|
| Tin (IV) antimonide | Sn3Sb4 |
| Tin (II) bromide | SnBr2 |
| Tin (IV) bromide | SnBr4 |
| Tin (IV) bromotrichloride | SnBrCl3 |
| Tin (IV) dibromodichloride | SnBr2Cl2 |
| Tin (IV) tribromochloride | SnBr3Cl |
| Tin (II) chloride | SnCl2 |
| Tin (IV) chloride | SnCl4 |
| Tin (IV) dichlorodiiodide | SnCl2I2 |
| Tin (IV) chromate | Sn(CrO4)2 |
| Tin (IV) iodide | SnI4 |
| Tin (IV) oxide | SnO2 |
| Tin (II) selenide | SnSe |
| Tin (IV) selenide | SnSe2 |
| Tin (IV) sulfate, dihydrate | Sn(SO4)2·2H2O |
| Tin (II) telluride | SnTe |
| Tin (IV) telluride | SnTe4 |
| Tin (II) metavanadate | Sn(VO3)2 |
| Titanic acid | H2TiO3 |
| Titanium (IV) bromide | TiBr4 |
| Titanium (IV) bromotrichloride | TiBrCl3 |
| Titanium (IV) tribromochloride | TiBr3Cl |
| Titanium (IV) dichlorodiiodide | TiCl2I2 |
| Titanium (IV) trichloroiodide | TiCl3I |
| Titanium (IV) iodide | TiI4 |
| Titanium (IV) oxynitrate, hydrate | TiO(NO3)2·xH2O |
