BENZOPURPURIN 4B Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 992-59-6 |
| Product name | BENZOPURPURIN 4B |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeFood Grade |
| Packaging | 25KG/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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
Documents We Provide for BENZOPURPURIN 4B
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk BENZOPURPURIN 4B Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of BENZOPURPURIN 4B
| Industry | Application | Process |
|---|---|---|
| Textile Dyeing and Printing | Direct dyeing and printing of cotton and viscose rayon | Exhaust dyeing, jigger dyeing, pad dyeing, and printing (requiring fixation) |
| Papermaking | Coloration of paper and production of colored paper | Dyeing of pulp or surface sizing with dye |
| Leather Processing | Dyeing of leather (particularly light leathers) | Exhaust dyeing |
| Biological Staining | Nuclear staining in histology and microbiology | Preparation of staining solutions for microscopic examination (e.g., as a counterstain in Papanicolaou staining) |
| Food Packaging Materials | Coloration of paper intended for food contact (restricted to specific applications compliant with relevant regulations) | Surface coating or pulp addition |
Manufacturing Quality Control of BENZOPURPURIN 4B
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component using reversed-phase HPLC with UV detection at 520 nm based on peak area comparison to certified reference standard. |
| Moisture Content | Karl Fischer Titration | Determines water content via coulometric or volumetric titration where iodine reacts stoichiometrically with water in anhydrous methanol/pyridine medium. |
| Heavy Metals (as Pb) | AAS (Flame or Graphite Furnace) | Measures total heavy metal content after acid digestion by atomic absorption spectroscopy using lead-specific hollow cathode lamp. |
| Sulfated Ash | Gravimetric Analysis | Determines inorganic residue after controlled combustion and sulfuric acid treatment, followed by high-temperature incineration and weighing. |
| Chloride Impurity | Ion Chromatography | Separates and quantifies chloride ions using anion-exchange column with suppressed conductivity detection. |
| Residual Solvents (e.g., Ethanol, Acetone) | GC-FID | Detects and quantifies volatile organic solvents by gas chromatography with flame ionization detection using calibrated external standards. |
| pH of Aqueous Solution | Potentiometric Titration | Measures hydrogen ion activity in a 1% w/v aqueous dispersion using standardized pH electrode and buffer calibration. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution of dispersed particles in liquid medium by analyzing angular variation of laser light scattering. |
| Bulk Density | ASTM D1895 Method A | Measures mass per unit volume of freely settled powder in a graduated cylinder after controlled tapping. |
| Color Strength (Relative) | UV-Vis Spectrophotometry | Compares absorbance ratio of sample solution to reference standard at lambda-max to assess dyeing power. |
| Organic Impurities (Related Substances) | HPLC-DAD | Identifies and quantifies structurally related impurities using HPLC with diode array detection and spectral library matching. |
| Heat Stability | Thermogravimetric Analysis (TGA) | Evaluates weight loss profile under controlled nitrogen atmosphere up to 300 C to assess thermal decomposition onset and residual volatiles. |
Technical Specifications of BENZOPURPURIN 4B
| Test Item | Specification |
|---|---|
| Appearance | Red crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 245-249°C |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Solubility | Soluble in dimethylformamide and hot acetic acid; practically insoluble in water |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
|
|
Download COA of BENZOPURPURIN 4B
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of BENZOPURPURIN 4B
Industrial BENZOPURPURIN 4B 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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply