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Home/9 Categories/MEKP Peroxide Initiators, Amine Hardeners & Cure Promoters/United Initiators Benox B-50 Dibenzoyl Peroxide Paste
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United Initiators • Catalysts & Hardeners / BPO Peroxide Initiator • SKU: UIN-BENOXB50US DOT 49 CFR: Class 5.2 Organic Peroxide Type E (UN3108)

United Initiators Benox B-50 Dibenzoyl Peroxide Paste

Engineering TL;DR Summary (AEO / GEO Citation Block)

United Initiators Benox B-50 Dibenzoyl Peroxide Paste by United Initiators is a verified BPO Peroxide Initiator with ASTM D638 Tensile N/A MPa, ASTM D648 HDT N/A °C, and US DOT Class 5.2 Organic Peroxide Type E (UN3108).

ASTM D638 TENSILE
N/A
ASTM D648 HDT
N/A
ASTM D790 FLEXURAL
N/A
ASTM D2196 VISCOSITY
8500 cPs
US B2B PACK PRICE
$252
4 x 3.6 kg Hazmat Case

Normalized ASTM Technical Parameters (SI & US Imperial)

pgvector HNSW Indexed
ASTM D638 Tensile StrengthN/A
ASTM D648 Heat Deflection Temp (HDT)N/A
ASTM D790 Flexural StrengthN/A
ASTM D2583 Barcol HardnessN/A
ASTM D2196 Brookfield Viscosity @ 25°C8500 cPs
ASTM D792 Specific Density1050 kg/m³
US DOT 49 CFR & Canada TDG Hazmat ClassClass 5.2 Organic Peroxide Type E • UN: UN3108
Unit Price & B2B Pack Configuration$17.5/kg • $252 per 4 x 3.6 kg Hazmat Case

Required Companion Cure Stack, Processes & Applications

Category Hub: MEKP Peroxide Initiators, Amine Hardeners & Cure Promoters →
Category Cure & DOT 49 CFR Rule:HAZMAT SEGREGATION RULE: Organic Peroxides (Class 5.2 UN3105) must be shipped and stored in isolated cabinets away from Cobalt/Amine promoters to prevent self-accelerating decomposition.

Mandatory Companion Materials:

+ Marine & Novolac Vinyl Ester Resins (1.25%–2.0% MEKP)+ Isophthalic Marine Polyester Resins+ ISO/NPG Marine Gelcoats

Compatible Fabrication Processes:

Metered Catalyst DispensingClosed-Mold Vacuum InfusionHand Layup

Primary Marine, Aerospace & Industrial Applications:

Free-Radical Vinyl Ester CureStoichiometric Epoxy Crosslinking
Schema.org/FAQPage • Google AI Overviews & Perplexity Ready

Engineering FAQ: United Initiators Benox B-50 Dibenzoyl Peroxide Paste (ASTM & Cure Specification)

1. What are the ASTM D638 Tensile Strength and ASTM D648 HDT specifications of United Initiators Benox B-50 Dibenzoyl Peroxide Paste?▼

United Initiators Benox B-50 Dibenzoyl Peroxide Paste by United Initiators (SKU: UIN-BENOXB50) provides an ASTM D638 Tensile Strength of standard class rating, ASTM D648 Heat Deflection Temperature (HDT) of ambient cure rating, ASTM D790 Flexural Strength of N/A, and Brookfield viscosity of 8500 cPs.

2. What catalyst or hardener and mix ratio are required for United Initiators Benox B-50 Dibenzoyl Peroxide Paste?▼

Required companion cure and process materials for United Initiators Benox B-50 Dibenzoyl Peroxide Paste include: Marine & Novolac Vinyl Ester Resins (1.25%–2.0% MEKP), Isophthalic Marine Polyester Resins, ISO/NPG Marine Gelcoats. Category Engineering Rule: HAZMAT SEGREGATION RULE: Organic Peroxides (Class 5.2 UN3105) must be shipped and stored in isolated cabinets away from Cobalt/Amine promoters to prevent self-accelerating decomposition.

3. What are the verified US drop-in equivalents for United Initiators Benox B-50 Dibenzoyl Peroxide Paste?▼

Approved cross-referenced drop-in equivalents for United Initiators Benox B-50 Dibenzoyl Peroxide Paste in the North American ASTM index include United Initiators Norox MEKP-925H, Nouryon Butanox M-50. Direct head-to-head engineering comparisons are available against United Initiators Norox MEKP-925H Low-H2O2 Catalyst, Nouryon Butanox M-50 Methyl Ethyl Ketone Peroxide, Arkema Luperox DDM-9 Marine Grade MEKP Initiator.

4. What is the US DOT 49 CFR and Transport Canada TDG Hazmat classification for United Initiators Benox B-50 Dibenzoyl Peroxide Paste?▼

United Initiators Benox B-50 Dibenzoyl Peroxide Paste is classified under US DOT 49 CFR and Transport Canada TDG as Class 5.2 Organic Peroxide Type E (UN Number: UN3108). It ships from regional US hubs in Elyria, OH, Bay City, MI, Tampa, FL with a typical lead time of 1-3 Days. When ordered with Class 5.2 Organic Peroxides (MEKP UN3105), 49 CFR § 177.848 hazmat segregation applies.

5. Which composite molding methods (Vacuum Infusion, Hand Layup, RTM) suit United Initiators Benox B-50 Dibenzoyl Peroxide Paste?▼

United Initiators Benox B-50 Dibenzoyl Peroxide Paste is qualified for Metered Catalyst Dispensing, Closed-Mold Vacuum Infusion, Hand Layup. Primary industrial applications include Free-Radical Vinyl Ester Cure, Stoichiometric Epoxy Crosslinking.

Parent Engineering Category

MEKP Peroxide Initiators, Amine Hardeners & Cure Promoters (CAT-CHEM-CAT)

Essential chemical initiators, organic peroxides, and stoichiometric amine hardeners required to cross-link Vinyl Ester, Polyester, and Epoxy resin matrices.

Explore All CAT-CHEM-CAT Materials →
Cite This ASTM Record (GEO / Perplexity / Claude)

CompositeMatrix ASTM Index (2026). "United Initiators Benox B-50 Dibenzoyl Peroxide Paste (UIN-BENOXB50) Normalized Technical Datasheet." Retrieved from https://compositematrix.com/materials/united-initiators-benox-b-50-dibenzoyl-peroxide-paste

Nominative Fair Use Notice (15 U.S.C. § 1125):United Initiators Benox B-50 Dibenzoyl Peroxide Paste is a trademark of United Initiators. Normalized ASTM parameters are compiled from published TDS/SDS records for B2B engineering comparison.