T-amyl peracetic acid ester (TAPA) 690-83-5

Tert-Amyl Peroxyacetate
Trade Name: Initiator TAPA
English Name: Tert-amyl peroxyacetate
Chemical Name: Tert-amyl peroxyacetate
Structural Formula:
Molecular Formula: C7H14O3
Molecular Weight: 146.20
Theoretical Active Oxygen Content: 10.94%
CAS Number: 690-83-5
UN No. 3107
Properties: This product is a colorless, transparent liquid, diluted with benzene, odorless mineral oil, isododecane, etc. It is insoluble in water but soluble in most organic solvents. Its decomposition temperature is 159°C; its specific gravity (20°C)
is 0.923, and its refractive index (20°C) is 0.1035. The product is currently available in two concentrations: 70% and 50%.
Major decomposition products: tert-butanol, acetic acid, di-tert-butyl ether, methane, ethane, etc.
Safety Parameters:
Half-life:
0.1 hour: 134°C
1 hour: 114°C
10 hours: 96°C
Thermal Stability Data:
Self-Accelerating Decomposition Temperature (SADT): 60°C
Critical Temperature (Tem): --
Control Temperature (Tc): --
Storage Temperature (Tsmax): --/30°C
Activation Energy E (kJ/mol): 152.16
Technical Specifications:
Appearance: Colorless, transparent liquid
Content: 75% (min. 50%)
Active oxygen: 8.96% (min. 5.93%)
Free acid: 0.5% (max. 0.5%)
Applications:
1. An excellent low-temperature initiator for low-density polyethylene (LDPE), commonly used in the tubular process. When combined with the initiator TBPV (tert-butyl peroxypivalate) and TBPEH (tert-butyl peroxy-2-ethylhexanoate
), and the initiator TBPB (tert-butyl perbenzoate) to achieve better polymerization results.
2. A high-temperature curing agent for unsaturated polyesters.
3. Can be used as a polymerization initiator for styrene or styrene copolymers, as well as for methacrylates and vinyl acetate.
Packaging and Shipping:
Our standard packaging is 20-kilogram polyethylene drums. We can also supply packaging sizes according to customer requirements; customers may specify their needs when placing an order.
Storage Precautions:
1. Store in a cool, well-ventilated area at a temperature not exceeding 30°C.
2. Keep away from sources of ignition and heat. Store separately from acids, reducing agents, flammable and combustible materials, and other reducing agents.
3. Lighting and ventilation facilities in the storage area must be explosion-proof, and switches should be located outdoors.
4. Handle with care to prevent damage to packaging and containers. Avoid impact and vibration. Wear appropriate personal protective equipment during repackaging and handling operations.
5. Customers are requested to carefully read our factory’s “Material Safety Data Sheet (MSDS)” when storing, transporting, and using this product.
Product Shelf Life:
When stored and transported in strict accordance with the manufacturer’s instructions, product quality is guaranteed for three months.
Fire Protection:
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 hose to suppress the flames; notify the fire department for further handling.