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1,3-Diphenylguanidine is a white or cream powder with a slight odour and bitter taste. slightly soluble in water, soluble in ethanol, chloroform, hot benzene, hot toluene, easily soluble in dilute inorganic acids.
1,3-Diphenylguanidine is used as medium speed accelerator for natural rubber and synthetic rubber, mainly used in the manufacture of tires, rubber plates, rubber shoes and other rubber industrial products.
1,3-Diphenylguanidine is guanidine carrying a phenyl substituent on each of the two amino groups.
CAS Number: 102-06-7
Molecular Formula: C13H13N3
Molecular Weight: 211.26
EINECS Number: 203-002-1
Synonyms: 1,3-Diphenylguanidine, 102-06-7, Diphenylguanidine, N,N'-DIPHENYLGUANIDINE, Vulkazit, Melaniline, Accelerator D, Nocceler D, Denax, s-Diphenylguanidine, Vulkacite D, Vulcafor DPG, Vulkacit D, Denax DPG, DPG accelerator, Vulkacit D/C, Dwufenyloguanidyna, Soxinol D, Guanidine, 1,3-diphenyl-, Guanidine, N,N'-diphenyl-, USAF EK-1270, Sanceler D, USAF B-19, Vulcacid D, NCI-C60924, DTXSID3025178, 6MRZ85RNHQ, NSC-3272, DTXCID005178, CHEBI:144319, RefChem:72819, 203-002-1, 1,2-diphenylguanidine, diphenyl guanidine, 1,3-Difenylguanid, NSC 3272, MFCD00001758, CHEMBL77675, DFG, [imino(phenylamino)methyl]phenylamine, NCGC00090698-02, NCGC00090698-04, Sym-diphenylguanidine, DPG (VAN), Dwufenyloguanidyna [Polish], Vanax DPG, 1,3-Difenylguanid [Czech], CAS-102-06-7, SMR000567260, CCRIS 1395, HSDB 5345, EINECS 203-002-1, UNII-6MRZ85RNHQ, phenax, AI3-00225, DPG vulcanizer, Akrochem DPG, diphenyl-guanidine, Perkacit DPG, Vulcaid DPG, 13-diphenylguanidine, Guanidine,3-diphenyl-, Guanidine,N'-diphenyl-, Maybridge1_002607, N,N''-Diphenyl-guanidine, WLN: MUYMR & MR, EC 203-002-1, Cambridge id 5539652, D.P.G, REGID_for_CID_7594, SCHEMBL35172, SCHEMBL78658, MLS001055401, MLS001181565, DivK1c_001359, SCHEMBL809224, 1,3-Diphenylguanidine, 97%, orb1219183, orb1306713, SCHEMBL1793520, SCHEMBL1793523, Accelerator D Diphenyl guanidine, HMS548O11, NSC3272, 1,3-Diphenylguanidine (Standard), HMS2870H09, HY-W014332R, 1,3-DIPHENYLGUANIDINE [MI], Tox21_110998, Tox21_400041, BBL011030, BDBM50010769, CCG-49163, EBC-04196, SBB000514, STK802182, AKOS000118775, AKOS022133740, N,N'-DIPHENYLGUANIDINE [HSDB], Tox21_110998_1, CS-W015048, DB14191, HY-W014332, MSK001863-100M, 1,3-Diphenylguanidine, primary standard, CDS1_000319, MSK001863-1000M, NCGC00090698-01, NCGC00090698-03, NCGC00090698-05, NCGC00090698-06, DA-16706, ST025753, VS-02813, D0723, D0892, NS00011462, EN300-21474, D88181, SBI-0653925.0001, T20253, AE-641/01188002, F464542, Q2537147, SR-01000638639-1, 1,3-Diphenylguanidine Solution in Methanol, 100ug/mL, BRD-K12362304-001-07-3, 1,3-Diphenylguanidine Solution in Methanol, 1000ug/mL, F3096-1727, Z20304507, NCI-C60924;AcceleratorD;Akrochem DPG;Denax;denaxdpg;DPG accelerator;dpgaccelerator;Dwufenyloguanidyna
1,3-Diphenylguanidine is used as an accelerator in the rubber industry.
1,3-Diphenylguanidine has a role as an allergen.
1,3-Diphenylguanidine is an organic compound belonging to the guanidine family.
1,3-Diphenylguanidine contains a guanidine functional group substituted with two phenyl groups.
It is widely known in the rubber industry as DPG, where it is used primarily as a vulcanization accelerator and accelerator activator.
1,3-Diphenylguanidine has the molecular formula C₁₃H₁₃N₃.
1,3-Diphenylguanidines molecular weight is approximately 211.27 g/mol.
Its CAS Registry Number is 102-06-7.
1,3-Diphenylguanidine has the systematic chemical name N,N′-diphenylguanidine.
1,3-Diphenylguanidine is also known by names such as diphenylguanidine, sym-diphenylguanidine, and DPG.
The abbreviation DPG is commonly used in technical rubber and chemical literature.
1,3-Diphenylguanidine contains three nitrogen atoms.
These nitrogen atoms form the guanidine functional group responsible for its basic and chemically reactive behavior.
The two phenyl rings provide the aromatic portion of the molecule.
1,3-Diphenylguanidine is normally encountered as a white or off-white crystalline solid.
1,3-Diphenylguanidine has a relatively high melting point compared with many simple organic additives.
Its solid form makes it convenient to handle as a powdered rubber-processing ingredient.
1,3-Diphenylguanidine is a weak-to-moderately basic organic compound.
The guanidine group can accept a proton and can therefore participate in acid-base reactions.
This basicity is important for its role in accelerating sulfur vulcanization.
1,3-Diphenylguanidine has limited solubility in water.
Its two hydrophobic phenyl groups strongly influence its interaction with aqueous systems.
1,3-Diphenylguanidine is more compatible with selected organic solvents and rubber-compounding ingredients.
1,3-Diphenylguanidine is primarily associated with sulfur vulcanization of rubber.
1,3-Diphenylguanidine promotes chemical crosslinking between polymer chains in the presence of sulfur and other curing ingredients.
This process converts relatively soft rubber compounds into stronger and more elastic vulcanized materials.
1,3-Diphenylguanidine is classified as a secondary accelerator.
1,3-Diphenylguanidine is often used together with primary accelerators such as sulfenamide accelerators.
The combination can provide better control over cure rate, scorch behavior, and final rubber properties.
1,3-Diphenylguanidine can also function as an activator for certain rubber accelerators.
It can increase the effectiveness of accelerator systems during vulcanization.
This makes it useful in formulations where a controlled increase in curing activity is required.
1,3-Diphenylguanidine participates in the complex chemistry of sulfur crosslinking.
It interacts with sulfur, zinc-containing activators, fatty acids, and other accelerator species during curing.
These interactions ultimately promote formation of sulfur bridges between rubber polymer chains.
1,3-Diphenylguanidine is particularly important in natural rubber and synthetic elastomer formulations.
1,3-Diphenylguanidine can be used in compounds based on natural rubber, styrene-butadiene rubber, polybutadiene rubber, and related elastomers.
Its effectiveness depends on the polymer, sulfur level, accelerator combination, and curing temperature.
1,3-Diphenylguanidine can influence the cure characteristics of rubber compounds.
1,3-Diphenylguanidine can increase the rate at which crosslinking develops during vulcanization.
This allows compounders to adjust processing time and final mechanical properties.
1,3-Diphenylguanidine can influence the mechanical properties of vulcanized rubber.
Appropriate accelerator levels can contribute to desirable hardness, tensile strength, modulus, and elasticity.
The final properties depend strongly on the complete formulation rather than DPG alone.
1,3-Diphenylguanidine is an important industrial rubber chemical.
It has historically been used in tires, belts, hoses, footwear, seals, and other vulcanized rubber products.
1,3-Diphenylguanidine use is particularly relevant where efficient sulfur curing and accelerator activation are required.
1,3-Diphenylguanidine can be identified using analytical techniques such as HPLC, GC-MS, FTIR, and NMR.
These methods can be used to confirm its identity and determine its concentration in chemical or rubber samples.
Analytical monitoring is especially useful for quality control and occupational-exposure investigations.
1,3-Diphenylguanidine is structurally related to other guanidine-based rubber chemicals.
Its phenyl-substituted structure distinguishes it from aliphatic guanidines and other accelerator families.
The aromatic substituents also influence its solubility and physical properties.
1,3-Diphenylguanidine is important in rubber-compounding research.
Researchers use it to investigate vulcanization kinetics, accelerator interactions, and crosslink formation.
1,3-Diphenylguanidine is also used as a reference accelerator when evaluating newer rubber-curing systems.
1,3-Diphenylguanidine is not itself the rubber polymer.
1,3-Diphenylguanidine is a low-molecular-weight processing additive incorporated into the rubber formulation.
Its function is to control and promote the chemical reactions responsible for vulcanization.
1,3-Diphenylguanidine is therefore best described as a guanidine-based rubber vulcanization accelerator and activator.
Its main industrial importance comes from its ability to promote sulfur crosslinking and modify curing behavior.
1,3-Diphenylguanidine remains a well-established compound in rubber chemistry and elastomer processing.**
1,3-Diphenylguanidine has an aromatic molecular structure that influences its physicochemical behavior.
The two phenyl rings contribute hydrophobicity, while the guanidine group provides the principal polar and basic character.
The combination of these structural features gives DPG a balance between aromatic and ionic-type chemical behavior.
1,3-Diphenylguanidine can form intermolecular hydrogen-bonding interactions.
The N–H groups can participate as hydrogen-bond donors, while nitrogen atoms in the guanidine functionality can act as acceptors depending on their electronic environment.
These interactions contribute to the crystalline structure of the solid.
1,3-Diphenylguanidine has a relatively rigid molecular framework.
The phenyl groups provide aromatic rigidity, while conjugation within the guanidine group contributes additional electronic stabilization.
1,3-Diphenylguanidine structure distinguishes DPG from more flexible aliphatic accelerator molecules.
1,3-Diphenylguanidine can undergo protonation at the guanidine functionality.
Protonation produces a diphenylguanidinium species with a delocalized positive charge.
The ability to form this cation is important for its interactions with acids and ionic species.
1,3-Diphenylguanidine can form crystalline salts with suitable acids.
Salt formation changes its solubility, melting behavior, and handling characteristics.
This chemistry is useful for analytical identification and preparation of specific chemical forms.
1,3-Diphenylguanidine is substantially less volatile than many low-molecular-weight organic chemicals.
1,3-Diphenylguanidine solid state and relatively high molecular weight reduce the tendency to enter the gas phase under ambient conditions.
Consequently, particulate exposure is generally more relevant than vapor exposure during routine powder handling.
1,3-Diphenylguanidine can become airborne during mechanical processing.
Activities such as pouring, weighing, mixing, and transferring powdered material can generate respirable or inhalable particles.
Enclosed transfer systems and local exhaust ventilation can reduce occupational exposure.
1,3-Diphenylguanidine can be incorporated into elastomers through internal mixing.
During compounding, the accelerator is distributed throughout the polymer matrix together with sulfur and other additives.
Good dispersion is necessary to obtain consistent curing throughout the rubber article.
1,3-Diphenylguanidine can affect the rheometric cure curve of rubber.
Its presence changes the torque development observed during vulcanization testing.
The resulting curve can provide information about scorch behavior, cure rate, and final network development.
Melting point: 146-148 °C (lit.)
Boiling point: 170 °C
Density: 1.13 g/cm3
Vapor pressure: 0 Pa at 25 °C
Refractive index: 1.6000 (estimate)
Flash point: 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
pKa: pK1: 10.12 (25 °C)
Form: Powder
Color: Pale cream
pH: 10.2 (10 g/L, H2O)
Odor: White powder, bitter taste, slight odor
Water solubility: Slightly soluble
Merck: 14,3324
BRN: 1875653
Henry's Law Constant: 1.4×10⁶ mol/(m³Pa) at 25 °C, HSDB (2015)
Stability: Stable. Combustible. Incompatible with strong oxidizing agents. Moisture sensitive.
Major Application: Cleaning products; cosmetics; food and beverages; personal care
InChI: InChI=1S/C13H13N3/c14-13(15-11-7-3-1-4-8-11)16-12-9-5-2-6-10-12/h1-10H,(H3,14,15,16)
InChIKey: OWRCNXZUPFZXOS-UHFFFAOYSA-N
SMILES: N=C(Nc1ccccc1)Nc2ccccc2
LogP: 2.42 at 21.1 °C
1,3-Diphenylguanidine has a guanidine core with two phenyl substituents.
The guanidine portion contains three nitrogen atoms connected around a central carbon atom.
1,3-Diphenylguanidine arrangement gives the molecule its characteristic basicity and ability to participate in proton-transfer reactions.
1,3-Diphenylguanidine can exist in different resonance forms.
The positive and negative charge distribution can be delocalized across the nitrogen atoms of the guanidine group.
1,3-Diphenylguanidine electronic delocalization contributes to its chemical stability and basic behavior.
1,3-Diphenylguanidine can form salts with acids.
Protonation of the guanidine nitrogen produces a positively charged guanidinium species.
This property can be used to produce diphenylguanidine salts with different physical and chemical characteristics.
1,3-Diphenylguanidine can participate in acid-base reactions with carboxylic acids.
The basic guanidine group can interact with acidic components commonly present in rubber formulations.
These interactions can influence the activity of accelerator systems during vulcanization.
1,3-Diphenylguanidine has a relatively high melting temperature.
Its crystalline structure is stabilized by intermolecular interactions involving the guanidine functionality.
The melting behavior is useful for identifying the compound and assessing its purity.
1,3-Diphenylguanidine has low volatility under ordinary conditions.
1,3-Diphenylguanidine relatively high molecular mass and crystalline nature limit evaporation at room temperature.
Occupational exposure is therefore more commonly associated with dust generation during handling than with vapor exposure.
1,3-Diphenylguanidine can form airborne dust during industrial handling.
Powder transfer, weighing, mixing, and charging operations can release fine particles into workplace air.
Local exhaust ventilation can substantially reduce this type of exposure.
1,3-Diphenylguanidine has limited water solubility.
The two phenyl rings contribute significant hydrophobic character to the molecule.
The guanidine group provides polarity but does not make the entire molecule highly water-soluble.
1,3-Diphenylguanidine can interact strongly with acidic substances.
1,3-Diphenylguanidine basic functional group can become protonated in acidic environments.
This behavior is relevant to both chemical processing and environmental transport.
1,3-Diphenylguanidine can be incorporated into rubber compounds as a dry powder.
It is usually blended with the polymer, sulfur, zinc oxide, fatty acids, and other additives during compounding.
Uniform dispersion is important because accelerator concentration can affect the local vulcanization rate.
1,3-Diphenylguanidine can modify the induction period of vulcanization.
1,3-Diphenylguanidine presence influences the time required before significant crosslinking begins.
This property is important for balancing processing safety with curing efficiency.
1,3-Diphenylguanidine can increase the curing rate of selected rubber formulations.
The guanidine accelerator participates in the formation and activation of sulfur-containing intermediates.
The resulting acceleration can shorten the time needed to achieve the desired crosslink density.
1,3-Diphenylguanidine can affect scorch safety.
Scorch refers to premature vulcanization during rubber processing before the material reaches its intended curing stage.
The concentration and combination of DPG with other accelerators must therefore be carefully controlled.
1,3-Diphenylguanidine is often combined with sulfenamide accelerators.
This combination can provide a balance between processing safety and rapid curing once the vulcanization temperature is reached.
Such accelerator systems are widely studied in tire and technical-rubber formulations.
1,3-Diphenylguanidine can interact with zinc oxide during vulcanization.
Zinc-containing activator systems play an important role in the formation of reactive sulfur intermediates.
The interaction between accelerator, zinc species, sulfur, and fatty acids determines much of the curing behavior.
1,3-Diphenylguanidine can influence crosslink density.
Changes in accelerator concentration can alter the number and type of sulfur crosslinks formed within the rubber network.
Crosslink density subsequently affects hardness, modulus, elasticity, and resistance to deformation.
1,3-Diphenylguanidine can influence the balance between polysulfidic and shorter sulfur crosslinks.
The accelerator system affects the chemical pathways through which sulfur attaches to the polymer chains.
This crosslink structure can influence heat resistance, fatigue behavior, and aging performance.
1,3-Diphenylguanidine can influence the dynamic mechanical properties of rubber.
Changes in the cured network can affect storage modulus, damping, and energy dissipation.
These properties are particularly important in tires, vibration isolators, and flexible engineering components.
1,3-Diphenylguanidine can influence the thermal aging behavior of vulcanized rubber.
The structure of sulfur crosslinks affects how the rubber network responds to prolonged heat exposure.
The final aging performance therefore depends on both DPG concentration and the complete curing system.
1,3-Diphenylguanidine can be used in laboratory vulcanization studies.
Researchers can vary its concentration to investigate relationships between accelerator loading and cure kinetics.
Rheometer measurements can then be used to compare scorch time, optimum cure time, and torque development.
1,3-Diphenylguanidine can be detected in rubber products and environmental samples.
Extraction followed by chromatographic analysis can determine whether residual DPG is present.
Such measurements are useful for quality control, exposure assessment, and environmental monitoring.
1,3-Diphenylguanidine can undergo chemical transformation in environmental systems.
1,3-Diphenylguanidine behavior depends on factors such as pH, microbial activity, adsorption, and sunlight exposure.
Transformation products can have different mobility and toxicity from the parent compound.
1,3-Diphenylguanidine can interact with soil and sediment particles.
1,3-Diphenylguanidine aromatic structure and limited water solubility can promote association with organic matter and solid phases.
This can influence its transport and persistence after environmental release.
1,3-Diphenylguanidine is relevant to occupational hygiene in rubber manufacturing.
Workers may encounter the substance during weighing, mixing, compounding, and handling of accelerator-containing formulations.
Exposure-control measures are therefore important even when the final rubber product contains only a small concentration.
1,3-Diphenylguanidine can remain as a residual chemical in finished rubber materials.
The amount remaining depends on formulation composition, curing conditions, and the efficiency of incorporation into the rubber network.
Residual accelerator levels can be investigated using extraction and analytical techniques.
1,3-Diphenylguanidine has historical importance in the development of rubber accelerator technology.
1,3-Diphenylguanidine has been used for many decades as one of the established guanidine-type accelerators.
1,3-Diphenylguanidine known curing behavior makes it a useful benchmark for comparing newer accelerator systems.
1,3-Diphenylguanidine can be compared with other accelerator families such as thiazoles, sulfenamides, thiurams, and dithiocarbamates.
Each accelerator family produces different curing kinetics and crosslink characteristics.
DPG is particularly valued for its activating effect and its ability to work synergistically with other accelerators.
1,3-Diphenylguanidine is also relevant to research into accelerator replacement.
Environmental and occupational considerations have encouraged researchers to investigate alternative curing chemicals.
The performance of replacement accelerators is commonly compared against established compounds such as DPG.
1,3-Diphenylguanidine is therefore both a chemical reagent and an important industrial processing additive.
1,3-Diphenylguanidine guanidine chemistry explains its acid-base behavior, while its interactions with sulfur-curing systems explain its importance in rubber technology.
Understanding these two aspects is essential for evaluating its performance, handling requirements, and potential alternatives.
1,3-Diphenylguanidine can influence minimum and maximum torque values during rheometer testing.
Minimum torque is related to the viscosity of the uncured compound, while maximum torque provides information about the developing rubber network.
Changes in these parameters can help evaluate the influence of DPG on the formulation.
1,3-Diphenylguanidine can influence optimum cure time.
Increasing accelerator activity generally allows the desired degree of crosslinking to be reached more rapidly.
The actual optimum time depends on temperature, sulfur concentration, polymer type, and the other accelerators present.
1,3-Diphenylguanidine can influence the activation of sulfur species.
Rubber vulcanization requires conversion of relatively unreactive sulfur into more reactive intermediates.
DPG contributes to this accelerator chemistry through interactions with sulfur and other curing components.
1,3-Diphenylguanidine can work synergistically with accelerator combinations.
1,3-Diphenylguanidine behavior is often different when used alone compared with when combined with primary accelerators.
This allows rubber formulators to tailor the balance between processing safety and curing speed.
1,3-Diphenylguanidine can be used in semi-efficient and conventional vulcanization systems.
The final curing system determines the relative amounts of sulfur and accelerator used.
Changing this ratio can alter the type and distribution of sulfur crosslinks in the rubber.
1,3-Diphenylguanidine can influence the hardness of cured elastomers.
Changes in crosslink density and crosslink structure can produce measurable changes in hardness.
The relationship is formulation-dependent and cannot be attributed to DPG concentration alone.
1,3-Diphenylguanidine can influence tensile properties of vulcanized rubber.
1,3-Diphenylguanidine can influence abrasion resistance.
The crosslink structure developed during vulcanization contributes to resistance against mechanical wear.
This is particularly important for tires, conveyor belts, footwear, and other heavily abraded rubber products.
1,3-Diphenylguanidine can influence fatigue resistance.
Repeated mechanical deformation places stress on the sulfur-crosslinked network.
The type and density of crosslinks can therefore affect the ability of the rubber to withstand cyclic loading.
1,3-Diphenylguanidine can influence compression set.
Compression set describes the permanent deformation remaining after prolonged compression.
An appropriately designed vulcanization system can improve dimensional recovery after mechanical loading.
1,3-Diphenylguanidine can influence dynamic mechanical behavior.
Uses:
1,3-Diphenylguanidine is a primary standard for acids; aeeelerator for the vulcanization of rubber for use with thiazoles and sulfenamides; complexing agent in the deteetion of metals and organie bases.
1,3-Diphenylguanidine is primarily used as a vulcanization accelerator in the rubber industry.
1,3-Diphenylguanidine promotes the crosslinking reactions between rubber polymer chains and sulfur during curing.
This allows rubber compounds to reach their desired mechanical and elastic properties more efficiently.
1,3-Diphenylguanidine is used as a secondary accelerator in sulfur vulcanization systems.
1,3-Diphenylguanidine is commonly combined with primary accelerators rather than being used as the only accelerator.
This combination allows manufacturers to adjust curing speed, scorch safety, and final crosslink structure.
1,3-Diphenylguanidine is used as an accelerator activator.
1,3-Diphenylguanidine can increase the effectiveness of other accelerator systems during sulfur vulcanization.
This is particularly useful when a faster or more controlled curing response is required.
1,3-Diphenylguanidine is used in natural rubber compounds.
1,3-Diphenylguanidine promotes sulfur crosslinking in formulations based on natural rubber.
The resulting vulcanized material can exhibit improved strength, elasticity, hardness, and wear resistance.
1,3-Diphenylguanidine is used in synthetic rubber compounds.
It can be incorporated into elastomers such as styrene-butadiene rubber and polybutadiene rubber.
Its effectiveness depends on the polymer structure and the complete accelerator system.
1,3-Diphenylguanidine is used in tire manufacturing.
It can be incorporated into selected tire-rubber formulations to control sulfur curing.
The resulting crosslink structure contributes to important properties such as durability and mechanical strength.
1,3-Diphenylguanidine is used in automotive rubber components.
1,3-Diphenylguanidine can be found in formulations for selected hoses, seals, gaskets, and vibration-control components.
Its function is primarily related to controlling the vulcanization of the elastomer.
1,3-Diphenylguanidine is used in rubber belts.
It helps accelerate the curing of rubber compounds used in conveyor and power-transmission belts.
Proper vulcanization provides the strength and durability required for repeated mechanical loading.
1,3-Diphenylguanidine is used in rubber hoses.
It can help control the curing process of elastomeric hose materials.
The resulting crosslinked network provides resistance to deformation and mechanical stress.
1,3-Diphenylguanidine is used in rubber seals and gaskets.
1,3-Diphenylguanidine contributes to the development of the crosslinked elastomer network during manufacturing.
Appropriate curing is necessary for maintaining dimensional stability and sealing performance.
1,3-Diphenylguanidine is used in rubber footwear components.
It can accelerate the vulcanization of rubber used in soles and other flexible components.
The resulting cured rubber can provide improved abrasion resistance and mechanical durability.
1,3-Diphenylguanidine is used in technical rubber goods.
These include selected molded rubber components, industrial sheets, rollers, and other elastomeric products.
Its role is to provide controlled and efficient sulfur curing.
1,3-Diphenylguanidine is used in rubber compounding research.
Researchers vary DPG concentration to study its influence on cure kinetics and crosslink formation.
This allows accelerator systems to be optimized for specific elastomer applications.
1,3-Diphenylguanidine is used as a reference accelerator in laboratory studies.
Its well-established curing behavior makes it useful for comparing different accelerator systems.
New accelerator technologies can therefore be evaluated against DPG-based formulations.
1,3-Diphenylguanidine is used in vulcanization kinetics studies.
Researchers can monitor its effect on scorch time, cure time, and torque development.
These measurements help explain how accelerator concentration affects rubber processing.
1,3-Diphenylguanidine is used in studies of sulfur-crosslink structure.
1,3-Diphenylguanidine can influence the formation of different types of sulfur bridges within the polymer network.
Researchers use this relationship to connect accelerator chemistry with final rubber performance.
1,3-Diphenylguanidine is used in combination with sulfenamide accelerators.
Such combinations can provide a balance between processing safety and rapid vulcanization.
This is particularly useful in formulations where both scorch resistance and curing efficiency are important.
1,3-Diphenylguanidine is used with thiazole-type accelerators.
Combining different accelerator families can modify the overall cure characteristics of an elastomer.
The exact combination is selected according to the desired processing and performance requirements.
1,3-Diphenylguanidine is used in zinc-activated vulcanization systems.
Zinc oxide and fatty acids can participate in the accelerator activation process.
The resulting chemical interactions help generate reactive sulfur species capable of crosslinking rubber.
1,3-Diphenylguanidine is used to adjust rubber processing characteristics.
1,3-Diphenylguanidine accelerator activity can reduce the time required to achieve a specified degree of cure.
This can improve manufacturing productivity when the formulation is properly optimized.
1,3-Diphenylguanidine is used to modify the final mechanical properties of cured rubber.
Changes in accelerator concentration can alter crosslink density and crosslink distribution.
This can subsequently influence hardness, modulus, tensile strength, elongation, and resilience.
1,3-Diphenylguanidine is used in rubber formulation optimization.
Manufacturers can adjust its concentration together with sulfur, zinc oxide, fatty acids, and primary accelerators.
The objective is to obtain the required balance between processing behavior and final product performance.
1,3-Diphenylguanidine is used in research on accelerator replacement.
Its established performance makes it a useful benchmark for evaluating alternative rubber accelerators.
Researchers compare new compounds against DPG in terms of curing behavior, mechanical properties, and safety.
1,3-Diphenylguanidine is used in studies of sustainable rubber technology.
Researchers investigate whether alternative accelerator systems can provide similar curing performance with reduced environmental or toxicological concerns.
DPG-based formulations provide a reference point for these comparisons.
1,3-Diphenylguanidine is used in analytical chemistry for rubber-additive identification.
1,3-Diphenylguanidine can serve as a reference standard when determining accelerator concentrations in rubber extracts.
Chromatographic techniques such as HPLC can be used for this purpose.
1,3-Diphenylguanidine is used in quality-control laboratories.
Raw accelerator materials and rubber formulations can be analyzed to verify composition and concentration.
This helps maintain consistency between different production batches.
1,3-Diphenylguanidine is used in research on recycled rubber.
Analytical studies can determine whether DPG and other curing additives remain in recovered rubber materials.
This information is useful when assessing the suitability of recycled rubber for new applications.
1,3-Diphenylguanidine is used in environmental studies involving rubber-derived chemicals.
Researchers investigate its release, transformation, and occurrence in samples associated with rubber products.
Such studies are particularly relevant to tire-wear and rubber-particle research.
1,3-Diphenylguanidine is used mainly because of its effectiveness in sulfur vulcanization.
1,3-Diphenylguanidine strongest industrial relevance is as a guanidine-type accelerator and accelerator activator.
1,3-Diphenylguanidine is used in conveyor-belt manufacturing.
1,3-Diphenylguanidine helps accelerate sulfur vulcanization of rubber compounds used in industrial conveyor belts.
The resulting crosslinked network provides the mechanical strength and wear resistance required during continuous operation.
1,3-Diphenylguanidine is used in transmission-belt manufacturing.
1,3-Diphenylguanidine contributes to controlled curing of elastomeric materials used in power-transmission belts.
Proper vulcanization helps these products withstand repeated bending, tension, and friction.
1,3-Diphenylguanidine is used in rubber roller production.
It helps control the curing process of elastomer compounds applied to industrial rollers.
The resulting rubber surface can provide the required hardness, resilience, and abrasion resistance.
1,3-Diphenylguanidine is used in vibration-isolation components.
1,3-Diphenylguanidine can be incorporated into rubber formulations used for mounts, bushings, and damping elements.
Controlled vulcanization helps establish the mechanical and dynamic properties required for vibration absorption.
1,3-Diphenylguanidine is used in automotive suspension components.
Selected rubber components can contain DPG as part of their sulfur-curing system.
The accelerator helps produce elastomer networks capable of repeated mechanical deformation.
1,3-Diphenylguanidine is used in automotive grommets and bushings.
1,3-Diphenylguanidine contributes to the vulcanization of rubber compounds used to isolate mechanical components.
The resulting cured elastomer must maintain its shape and flexibility during long-term service.
1,3-Diphenylguanidine is used in industrial rubber sheets.
It can accelerate the sulfur curing of sheet-based elastomer formulations.
The cured material can then provide improved resistance to deformation, abrasion, and mechanical stress.
1,3-Diphenylguanidine is used in rubber-coated fabrics.
It can be included in the curing system of elastomer coatings applied to textile substrates.
Vulcanization helps the rubber coating develop the required flexibility and durability.
1,3-Diphenylguanidine is used in rubber-lined equipment.
1,3-Diphenylguanidine can contribute to curing rubber layers used to protect industrial surfaces.
The resulting vulcanized lining can provide resistance to mechanical wear and selected chemical environments.
1,3-Diphenylguanidine is used in industrial gaskets.
It helps accelerate the curing of rubber compounds used to manufacture sealing components.
The final crosslinked structure contributes to dimensional stability and resistance to compression.
1,3-Diphenylguanidine is used in molded rubber products.
1,3-Diphenylguanidine can be incorporated into compounds processed by compression, transfer, or injection molding.
1,3-Diphenylguanidine accelerator activity helps establish the required cure during the molding cycle.
1,3-Diphenylguanidine is used in extrusion-based rubber processing.
The accelerator is incorporated into the compound before or during preparation of extruded profiles.
The subsequent vulcanization step develops the permanent shape and mechanical properties of the product.
1,3-Diphenylguanidine is used in rubber compound development for high-performance applications.
Formulators can combine it with other accelerators to tune the curing response.
1,3-Diphenylguanidine allows processing parameters and final properties to be optimized simultaneously.
Safety Profile:
Poison by ingestion and intraperitoneal routes.
Experimental teratogenic and reproductive effects.
Mutation data reported, when heated to decomposition it emits toxic fumes of NOx,.
1,3-Diphenylguanidine can cause serious eye irritation.
Direct contact with the solid or its dust can produce redness, pain, watering, and irritation.
Safety glasses or chemical splash goggles should therefore be used when handling the substance.
1,3-Diphenylguanidine can cause skin irritation.
Repeated or prolonged contact may result in redness, dryness, or irritation in susceptible individuals.
Protective gloves and appropriate laboratory clothing should be used to minimize direct contact.
1,3-Diphenylguanidine can cause respiratory irritation when its dust is inhaled.
Because it is normally handled as a solid, dust generation is an important potential exposure route.
Weighing and transferring the powder should preferably be performed with effective local ventilation.
1,3-Diphenylguanidine can be harmful if inhaled at sufficiently high concentrations.
Fine particles can enter the respiratory tract during uncontrolled powder handling.
Exposure should therefore be minimized through containment, ventilation, and suitable respiratory protection where required.
1,3-Diphenylguanidine can be harmful if swallowed in significant quantities.
Ingestion may produce gastrointestinal irritation or other systemic effects depending on the amount absorbed.
1,3-Diphenylguanidine can cause allergic skin reactions in susceptible individuals.
Repeated occupational exposure to rubber chemicals can lead to sensitization in some workers.
Individuals who develop persistent skin reactions should avoid further exposure and seek occupational or medical evaluation.
1,3-Diphenylguanidine presents an occupational exposure concern during rubber compounding.
Workers can encounter the substance while weighing, mixing, transferring, or incorporating powdered accelerator into rubber compounds.
Engineering controls are therefore important in industrial environments where DPG is handled regularly.
1,3-Diphenylguanidine dust can contaminate surrounding work surfaces.
1,3-Diphenylguanidine should not be deliberately inhaled or handled without appropriate ventilation.
1,3-Diphenylguanidine is combustible as an organic solid.
Although it is not normally regarded as a highly flammable liquid, fine organic powders can present increased fire risks when dispersed in air.
Ignition sources should therefore be controlled during large-scale powder handling.
1,3-Diphenylguanidine dust may present a combustible-dust concern under suitable conditions.
The actual risk depends on particle size, concentration in air, confinement, ignition energy, and industrial processing conditions.
Dust accumulation should therefore be minimized in manufacturing environments.
1,3-Diphenylguanidine can produce hazardous decomposition products when strongly heated.
