A solid sample of diphenyl guanidine (DPG) was purchased from Sigma-Aldrich (Oakville, ON, Canada) at a reported purity of 97%. A commercial standard of 6PPD-q with a purity of 98.8% was purchased from HPC Standards (Atlanta, GA, USA). HPLC grade solvents (methanol and acetone) and formic acid (88.0%) were purchased from Fisher Scientific (Ottawa, ON, Canada). MilliQ water was produced in-house within the Water Quality Centre at Trent University. For the preparation of a solution of the oxidation biproducts of 6PPD, a solid sample of this compound (N-phenyl-N′-(1,3-dimethylbutyl)-p-phenylenediamine) was also purchased from Sigma-Aldrich, but no purity data were provided by the supplier. However, no previously reported transformation products of 6PPD (Tian et al. 2021 (link)) were detected in significant amounts in this standard.
Diphenyl guanidine dpg
Manufactured by Merck Group
Sourced in Canada, Japan
Diphenyl guanidine (DPG) is a chemical compound that is commonly used as a laboratory reagent. It functions as an accelerator in the vulcanization process of rubber production. DPG is a white crystalline solid with a specific chemical structure and molecular formula.
Automatically generated - may contain errors
Lab products found in correlation
Formic acid, by Thermo Fisher Scientific (1 mentions)
2 2 dithiodipyridine, by Merck Group (1 mentions)
3 mercaptopropyl methyldimethoxysilane, by Merck Group (1 mentions)
Dichloromethane, by Merck Group (1 mentions)
Isopropyl alcohol, by Merck Group (1 mentions)
Sodium hydroxide (naoh), by Samchun (1 mentions)
2 protocols using diphenyl guanidine dpg
1
Synthesis and Characterization of 6PPD
2
Silica-Filled Styrene-Butadiene Rubber Compounding
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(3-mercaptopropyl)methyldimethoxysilane (MPDMS, ≥95%), 2,2’-dithiodipyridine, dichloromethane (anhydrous, 99.8%), petroleum ether, and isopropyl alcohol (IPA, 99.7%) were purchased from Sigma-Aldrich, St. Louis, MO, USA. SBR 1723 (styrene content: 23.5%, oil type: TDEA 37.5 phr, mooney viscosity (ML1 + 4): 49, coagulant: acid salt) was obtained from Kumho Petrochemical, Seoul, Korea. F-175 silica cake (pH: 7.0, loss on drying/105 °C × 2H: 6.0%, ignition loss at 1000 °C: 13.0%, oil absorption: 250 mL/100 g, Brunaeur–Emmett–Teller (BET): 175 m2/g) was purchased from Namhae Chemical, Yeosu, Korea. Bis[3-(triethoxysilyl)propyl] disulfide (TESPD (Si-75)) was purchased from Evonik Industries, Essen, Germany. Sodium hydroxide (NaOH, ≥96%) was obtained Samchun, Seoul, Korea. Various compounding processing additives such as zinc oxide (ZnO), stearic acid (S/A), and N-(1,3-dimethyl-butyl)-N’-phenyl-p-phenylenediamine (6PPD) were purchased from Sigma-Aldrich, USA. In the final compounding step, sulfur (Samchun, Seoul, Korea) was used as a crosslinking agent. N-cyclohexyl-2-benzothiazole sulfonamide (CBS) (Tokyo Chemical Industry, Tokyo, Japan) and diphenyl guanidine (DPG, Sigma-Aldrich, St. Louis, MO, USA) were used as crosslinking accelerators.
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