N,N-Diphenyl-p-phenylenediamine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 74-31-7 |
| Product name | N,N-Diphenyl-p-phenylenediamine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for N,N-Diphenyl-p-phenylenediamine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk N,N-Diphenyl-p-phenylenediamine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of N,N-Diphenyl-p-phenylenediamine
| Industry | Application | Process |
|---|---|---|
| Rubber Industry | Antioxidant and antidegradant | Added to rubber to enhance oxidation resistance and aging resistance |
| Plastics Industry | Heat stabilizer | Prevents thermal oxidative degradation during plastic processing |
| Chemical Intermediates | Production of other antioxidants | Used in the synthesis of high-performance antioxidants |
| Dye Industry | Intermediate for dye synthesis | Participates in constructing dye molecular structures |
| Polymeric Materials | Functional additive | Improves material weatherability and stability |
Manufacturing Quality Control of N,N-Diphenyl-p-phenylenediamine
| Test Item | Common Test Method | Method Summary |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state, and presence of impurities under natural or standard lighting. N,N'-Diphenyl-1,4-phenylenediamine is typically a light gray to brownish-gray crystalline powder. |
| Melting Point | Capillary Melting Point Method / Differential Scanning Calorimetry (DSC) | Determine the melting temperature range using capillary method or DSC. The pure compound has a melting point of approximately 128–132 °C, used as an indicator of purity. |
| Assay (Main Component) | High-Performance Liquid Chromatography (HPLC) | Reverse-phase HPLC with a C18 column and UV detection (e.g., at 254 nm) is used. Quantification is performed by external standard method based on the main peak area. The assay for N,N'-diphenyl-1,4-phenylenediamine is typically required to be ≥98.0%. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Using the same or optimized chromatographic conditions as for assay, this test detects and quantifies potential by-products or degradation impurities (e.g., mono-substituted phenyl derivatives, oxidation products), with limits set for individual and total impurities. |
| Moisture Content | Karl Fischer Titration | Determine water content using volumetric or coulometric Karl Fischer titration. Typically limited to ≤0.5% to ensure product stability. |
| Residue on Ignition / Ash Content | Gravimetric Method | The sample is ignited at high temperature (e.g., 750 °C) until constant weight is achieved. The remaining inorganic residue is weighed to assess inorganic impurity levels, typically limited to ≤0.1%. |
| Volatile Matter | Thermogravimetric Analysis (TGA) or Loss on Drying | Dry the sample to constant weight at a specified temperature (e.g., 105 °C) and calculate the mass loss, which indicates residual solvents or low-boiling impurities. |
| Infrared Spectral Identification | Fourier Transform Infrared Spectroscopy (FT-IR) | Obtain IR spectrum using KBr pellet or ATR mode, then compare characteristic absorption peaks (e.g., N–H, C–N, aromatic ring vibrations) with reference spectrum for structural confirmation. |
| Elemental Analysis (Optional) | Elemental Analyzer (CHNS/O) | Determine the content of C, H, and N elements to verify whether the composition matches the theoretical formula (C₁₈H₁₆N₂), used for high-purity product certification. |
Technical Specifications of N,N-Diphenyl-p-phenylenediamine
| Test Item | Specification |
|---|---|
| Appearance | Brown powder |
| Purity | >=98.5% |
| Melting Point | 52–56 °C |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic aromatic odor |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of N,N-Diphenyl-p-phenylenediamine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Safety Information of N,N-Diphenyl-p-phenylenediamine
| Pictograms |    |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of N,N-Diphenyl-p-phenylenediamine
Industrial N,N-Diphenyl-p-phenylenediamine Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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