Perodox C: tert-Butyl peroxybenzoate (TBPB) (614-45-9) — Polymerization Initiator, Curing Agent for Polymer Production, Thermoset Composites

August 12, 2026 4 min read

High-temperature peroxyester initiator for acrylic and styrenic polymerization. Wide processing window from 100-170°C — ideal for bulk, solution, and suspension processes.

Quick Facts

Trade Name Perodox C
Chemical Name tert-Butyl peroxybenzoate (TBPB)
CAS Number 614-45-9
Chemical Family Ester Peroxide
Brand Perodox
Function Category Polymerization Initiator, Curing Agent
Product Line Organic Peroxides – Ester Peroxides
Applications Acrylic Resin, PS, ABS, UPR
Market Segment Polymer Production, Thermoset Composites
Physical Form Liquid
Decomposition Temperature 100-170°C
Active Oxygen Content 8.2%
Molecular Weight 194.23

What Is tert-Butyl peroxybenzoate (TBPB)?

tert-Butyl peroxybenzoate (TBPB) is a ester peroxide supplied under the Perodox brand as part of the
Organic Peroxides – Ester Peroxides portfolio. High-temperature peroxyester initiator for acrylic and styrenic polymerization. Wide processing window from 100-170°C — ideal for bulk, solution, and suspension processes. As a polymerization initiator, curing agent,
it is engineered for demanding Polymer Production, Thermoset Composites applications where consistency and purity are critical.

Key Properties & Specifications

  • Chemical family: Ester Peroxide
  • CAS number: 614-45-9
  • Physical form: Liquid
  • Decomposition temperature: 100-170°C
  • Active oxygen content: 8.2%
  • Molecular weight: 194.23

How It Works

As an organic peroxide, tert-Butyl peroxybenzoate (TBPB) decomposes by homolytic cleavage when heated near 100-170°C, generating free radicals. These radicals initiate the polymerization or crosslinking of unsaturated monomers (such as styrene, acrylates, vinyls and unsaturated polyester resins), making it a core radical initiator for thermoset and polymer manufacturing.

Primary Applications

Perodox C is applied across Acrylic Resin, PS, ABS, UPR. Typical market segments include Polymer Production, Thermoset Composites.
Its performance profile makes it a trusted choice for formulators who need reproducible,
high-purity raw materials.

Safety, Handling & Storage

Handle Perodox C in accordance with its Safety Data Sheet (SDS). Store in original,
sealed packaging away from heat, ignition sources and incompatible materials, within the
recommended temperature range. Personal protective equipment and adequate ventilation are
required. Always consult the current SDS and applicable local regulations before use.

Regulatory & Compliance

Do Sender Chem supplies tert-Butyl peroxybenzoate (TBPB) with full documentation and supports compliance with
international chemical regulations (including REACH where applicable). For controlled
precursor grades, supply is managed under know-your-customer and licensing procedures.

Why Source Perodox C from Do Sender Chem?

Do Sender Chem is a global specialty chemical manufacturer offering a broad, multi-language
catalog, consistent quality and responsive technical support. With localized content in 20
languages and worldwide delivery, we help polymer, rubber and specialty producers secure
reliable polymerization initiator, curing agent supply.

Frequently Asked Questions

What is tert-Butyl peroxybenzoate (TBPB) used for?

tert-Butyl peroxybenzoate (TBPB) (trade name Perodox C) is used as a Polymerization Initiator, Curing Agent in Acrylic Resin, PS, ABS, UPR. It serves manufacturers in the Polymer Production, Thermoset Composites segments.

What is the CAS number of tert-Butyl peroxybenzoate (TBPB)?

The CAS Registry Number of tert-Butyl peroxybenzoate (TBPB) is 614-45-9. The CAS number uniquely identifies the substance and is the standard reference used in safety data sheets, regulatory filings and procurement specifications.

Is tert-Butyl peroxybenzoate (TBPB) classified as Ester Peroxide?

Yes. tert-Butyl peroxybenzoate (TBPB) belongs to the Ester Peroxide chemical family and is marketed under the Perodox brand as part of the Organic Peroxides – Ester Peroxides product line.

How should Perodox C be stored and handled?

Perodox C should be stored according to its safety data sheet, away from heat, ignition sources and incompatible materials, in original sealed packaging under the recommended temperature range. Always consult the current SDS and local regulations before handling.

Which industries buy Perodox C?

Perodox C is supplied to producers in the Polymer Production, Thermoset Composites industries that require reliable, high-purity Polymerization Initiator, Curing Agent raw materials.

Related Products

Explore other ester peroxide and polymerization initiator, curing agent products in our catalog, or contact
our team for formulation guidance.

References

  • CAS Registry Number: 614-45-9 — tert-Butyl peroxybenzoate (TBPB)
  • Do Sender Chem product data sheet: Perodox C

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