tert-Butyl Maleic Peroxide (TBPMA) 1931-62-0 (Perkadox PF-DBM25)

Tert-Butyl Peroxymaleic Acid
Trade Name: Initiator TBPMA
English Name: Tert-Butyl Peroxymaleic Acid
Chemical Name: Tert-Butyl Peroxymaleic Acid
Structural Formula:
Molecular Formula: C8H12O5
Molecular Weight: 188.1
Theoretical Active Oxygen Content: 8.5%
CAS: 1931-62-0
UN No. 3108
EINECS: 217-691-1
Type D liquid organic peroxide. Classified as a Class 2 dangerous good; prohibited for transport by rail and air.
Major decomposition products: CO₂, methane, ethane, isononanoic acid, 2-phenylpropan-2-ol, acetophenone, isopropylbenzene, etc.
Safety parameters:
Half-life:
0.1 hour: 142°C
1 hour: 117°C
10 hours: 95°C
Thermal Stability Data:
Self-Accelerating Decomposition Temperature (SADT): 60°C
Critical Temperature (Tem): --
Control Temperature (Tc): --
Storage Temperature (Tsmax): -10/25°C
Activation Energy E (kJ/mol): 121.20
Technical Specifications:
Appearance: White suspension
Color: 60 APHA
Content: 25%
Storage:
Due to the relative instability of organic peroxides, some loss of quality may occur over time. To minimize this loss, AkzoNobel recommends a maximum storage temperature (Tsmax) for each organic peroxide. Although temperature has little effect on the quality of Perkadox PF-DBM25, we still recommend storing this product below 25°C to prevent separation. Gently shake the product before use. To prevent solidification, we recommend a minimum storage temperature of -10°C. Thermal stability: Organic peroxides are thermally unstable substances that are capable of self-accelerating decomposition. The Self-Accelerating Decomposition Temperature (SADT) is the lowest temperature at which a substance may undergo self-accelerating decomposition within its transport packaging. The SADT is determined based on thermal accumulation storage tests. For Perkadox PF-DBM25, the SADT is 60°C.
Fire Safety:
1. This product may decompose violently when exposed to heat, causing a fierce fire. Small fires involving a small amount of the product should be extinguished immediately using a foam or dry powder fire extinguisher.
2. In the event of a large fire, evacuate immediately to a safe distance and use a water jet to extinguish the fire; notify the fire department to handle the situation.