Products Description of tert-Butyl Hydroperoxide CAS#75-91-2
Tert-Butyl Hydroperoxide (TBHP), also referred to as tert-butanol hydroperoxide, is an organic peroxide with the molecular formula C₄H₁₀O₂. It is typically presented as a clear, colorless liquid with limited solubility in water and good solubility in a wide range of organic solvents, such as ethanol and ether.
Owing to its reactive peroxide properties, TBHP is widely employed in chemical and industrial processes. It can function as a reaction catalyst and polymerization initiator and is also used in bleaching and deodorizing applications. In addition, TBHP serves as a cross-linking agent for unsaturated polyester resins and as a vulcanizing agent in rubber processing, making it a versatile material for various industrial applications.

Tert-Butyl hydroperoxide Chemical Properties
| Melting point | -2.8℃ |
| Boiling point | 37 °C (15 mmHg) |
| Density | 0.937 g/mL at 20 °C |
| Vapor pressure | 62 mmHg at 45 °C |
| Refractive index | n20/D 1.403 |
| Flash point | 85 °F |
| Storage conditions | 2-8℃ |
| Acidity coefficient (pKa) | pK1: 12.80 (25°C) |
| Form | Liquid |
| Color | Transparent and colorless |
| pH value | 4.3 |
| Water solubility | Miscible |
| Merck | 141,570 |
| BRN | 1098280 |
| Henry's Law Con stant | 4.2×10° mol/(m3Pa) at 25℃, Wang et al. (2017) |
| Exposure limits | No exposure limit is set. On the basis of its irritant properties a ceiling limit of 1.2 mg/m3 (0.3 ppm) is recommended. |
| Stability | Stable, but may explode if heated in enclosed conditions. Encounter with trace metals, molecular sieves or other contaminants may accelerate decomposition. Incompatible with reducing agents, combustible materials, acids |
| InChI | 1S/C4H1002/c1-4(2,3)6-5/h5H,1-3H3 |
| InChIKey | CIHOLLKRGTVIN-UHFFFAOYSA-N |
| SMILES | CC(C)(C)OO |
| LogP | 1.230 (est) |

Product Application of tert-Butyl Hydroperoxide CAS#75-91-2
Tert-Butyl Hydroperoxide (TBHP) is extensively used as a polymerization initiator and cross-linking agent, particularly in the processing of unsaturated resins. It also finds applications in emulsion polymerization and natural rubber vulcanization, as well as in diesel fuel additives, coatings and paints, and various other industrial processes.
