Properties & Applications & PackagesInquiry

Product Overview

1,3-Diphenylguanidine (DPG) is a common rubber chemical used as a secondary accelerator in sulfur vulcanization systems. It helps improve cure balance, processing safety and overall performance in rubber compounding, especially where controlled vulcanization is needed.
It is a white powder, slightly soluble in water, soluble in ethanol, chloroform, hot benzene, hot toluene, and easily soluble in dilute inorganic acids.

Key Specifications

Melting Point	146-148 °C(lit.)
Boiling Point	170°C
Density	1,13 g/cm³
Vapor Pressure	0Pa at 25℃
Refractive Index	1.6000 (estimate)
Fp	170°C
Storage Temp.	Sealed in dry,Store in freezer, under -20°C
Solubility	Soluble in alcohol, chloroform, hot benzene, hot toluene, and dilute mineral acids
Form	Powder
PKA	pK1:10.12 (25°C)
Color	Pale Cream
Odor	Wh. powd., bitter taste, sl. odor
PH	10.2 (10g/l, H2O)
Water Solubility	Slightly soluble

Performance Benefits

Improves scorch safety and processing stability.
Supports balanced vulcanization speed.
Widely used in tire and technical rubber formulations.
Reliable performance in many sulfur curing systems.

Typical Applications

Tires and tire components
Rubber hoses and belts
Seals, gaskets and molded rubber goods
NR, SBR, NBR and EPDM compounds
Industrial rubber products requiring a secondary accelerator

Mainly used as a medium-speed accelerator for natural rubber and synthetic rubber. It is commonly used as an active agent for thiazole, thiuram and hypoiodoyl accelerators. When used together with accelerators DM and TMTD, it can be used for continuous vulcanization. When the second accelerator of thiazole accelerator is used, the aging resistance of the vulcanized rubber is reduced, and an appropriate antioxidant must be used.

In neoprene, this product acts as a plasticizer and peptizer. This product is not suitable for white or light-colored products and rubber products in contact with food. Mainly used in the manufacture of tires, rubber sheets, shoe soles, industrial products, hard rubber and thick-walled products. As the second accelerator, the dosage is 1-2 parts. When used as the second accelerator of thiazole accelerator, the general dosage is 0.1-0.5 parts. Chromium diphenylguanidine, a derivative of diphenylguanidine, is an efficient rust inhibitor.

DPG is also used as a plastic cross-linking agent, temperature indicator material, ore flotation additive, coating additive, polishing material additive, metal analysis reagent and building materials additive.

Packaging, Grades & Supply

We supply 1,3-Diphenylguanidine (DPG) in bags, cartons and bulk packaging for industrial buyers. COA and MSDS are available with each order. For procurement teams and distributors, please ask for the current DPG price and bulk supply terms based on your required volume.

Why choose Greenchem International?

Stable export supply and strict quality control.
Flexible packaging and bulk logistics support.
Technical support for rubber formulation and application selection.
Competitive commercial terms for long-term buyers.

Ordering & Inquiry

To buy 1,3-Diphenylguanidine (DPG, CAS 102-06-7) or request COA, MSDS and a competitive quotation, please share your required grade, quantity and delivery country. We will reply with lead time and pricing.

1,3-Diphenylguanidine DPG