3,3'-Dihydroxybenzidine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 2373-98-0 |
| Product name | 3,3'-Dihydroxybenzidine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeElectronic 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 3,3'-Dihydroxybenzidine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3,3'-Dihydroxybenzidine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3,3'-Dihydroxybenzidine
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Azo dye intermediate | Used in the synthesis of high-performance azo dyes via diazotization and coupling reactions to achieve specific color spectra |
| High-Performance Polymers | Heat-resistant polymer monomer | Acts as a diamine component in condensation polymerization for heat-resistant polymers such as polyimides and polyurethanes |
| Electronic Chemicals | Liquid crystal display (LCD) material intermediate | Employed in the preparation of liquid crystal molecules with tailored optoelectronic properties, integrated into organic synthesis steps |
| Pharmaceutical R&D | Organic synthesis intermediate | Utilized in laboratory-scale construction of complex organic molecular frameworks, supporting drug molecule design and screening |
Manufacturing Quality Control of 3,3'-Dihydroxybenzidine
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reversed-phase HPLC with UV detection at 254 nm, comparing peak area against a certified reference standard. |
| Related Substances | HPLC-UV | Separation and detection of impurities (e.g., mono-hydroxy, nitro, or azo derivatives) using gradient HPLC-UV with relative response factor correction. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration with iodine reagent to quantify water content based on stoichiometric reaction with iodine and sulfur dioxide. |
| Residue on Ignition | Gravimetric Analysis | Heating sample at 700-800 C to constant weight and measuring inorganic ash residue as percentage of original mass. |
| Heavy Metals (as Pb) | AAS (Flame or Graphite Furnace) | Atomic absorption spectroscopy after acid digestion; measures absorbance of ground-state atoms at characteristic wavelength. |
| Chloride Impurity | Ion Chromatography | Separation of chloride anions on anion-exchange column with conductivity detection, quantified against calibration standards. |
| Sulfate Impurity | Ion Chromatography | Anion-exchange separation followed by conductivity detection; sulfate quantified via external calibration curve. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range over which solid transitions to liquid, using calibrated capillary apparatus per USP <741>. |
| Organic Volatile Impurities | GC-FID | Gas chromatographic separation with flame ionization detection for residual solvents (e.g., methanol, acetone, DMF). |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity as function of angle to determine volume-based particle size distribution. |
| Bulk Density | Graduated Cylinder Method | Mass of material freely poured into calibrated cylinder divided by its settled volume, per ASTM D1895. |
| pH of Aqueous Suspension | pH Meter | Measurement of hydrogen ion activity in saturated aqueous suspension using calibrated glass electrode pH meter. |
Technical Specifications of 3,3'-Dihydroxybenzidine
| Test Item | Specification |
|---|---|
| Appearance | Gray solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 128–132°C |
| Total Impurities | <=2.0% (HPLC) |
| Single Impurity | <=0.5% (HPLC) |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=20 ppm |
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 3,3'-Dihydroxybenzidine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3,3'-Dihydroxybenzidine
Packaging of 3,3'-Dihydroxybenzidine
Industrial 3,3'-Dihydroxybenzidine 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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