4,5-DICHLOROPHTHALIC ANHYDRIDE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 942-06-3 |
| Product name | 4,5-DICHLOROPHTHALIC ANHYDRIDE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty 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) |
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Documents We Provide for 4,5-DICHLOROPHTHALIC ANHYDRIDE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4,5-DICHLOROPHTHALIC ANHYDRIDE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4,5-DICHLOROPHTHALIC ANHYDRIDE
| Industry | Application | Process |
|---|---|---|
| Chemical Intermediates | Starting material for synthesizing fluorescent whitening agents, dyes, and pigments | Used as a chlorinated phthalic anhydride derivative bearing chlorine substituents on the aromatic ring; participates in nucleophilic substitution or condensation reactions to construct complex organic molecular frameworks |
| Polymers Industry | Production of high-performance polyimides, polyesters, and alkyd resins | Undergoes condensation polymerization with diamines or polyols; chlorine atoms are incorporated to modulate thermal stability, solubility, or flame retardancy of the resulting polymers |
| Agricultural Chemicals | Intermediate for synthesizing certain herbicides and fungicides | Subjected to further functional group transformations (e.g., hydrolysis, amination) to generate structural units of active ingredients |
| Pharmaceutical R&D | Synthetic building block for chlorinated heterocyclic compounds | Applied in preparing biologically active drug candidates, such as antitumor or anti-inflammatory compounds |
Manufacturing Quality Control of 4,5-DICHLOROPHTHALIC ANHYDRIDE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification based on peak area comparison against a certified reference standard using UV detection at 254 nm. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content via reaction of iodine with sulfur dioxide in pyridine-methanol medium. |
| Residue on Ignition | Gravimetric Analysis | Weight loss after high-temperature ashing reflects inorganic impurities; residue mass is measured gravimetrically. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element detection by plasma excitation and emission spectroscopy, calibrated against lead standards. |
| Chloride Impurity | Potentiometric Titration | Titration with silver nitrate using silver indicator electrode to detect endpoint via potential change. |
| Melting Point | Capillary Melting Point Determination | Thermal transition observed visually in capillary tube under controlled heating rate per USP/EP guidelines. |
| Organic Volatile Impurities | GC-FID | Separation and quantification of residual solvents using flame ionization detection with internal standard calibration. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Comparison of sample solution color intensity against APHA platinum-cobalt standards or measurement at 430 nm. |
| Acid Value | Acid-Base Titration | Neutralization of acidic groups with standardized potassium hydroxide solution using phenolphthalein indicator. |
| Particle Size Distribution | Laser Diffraction | Analysis of light scattering pattern from dispersed particles to determine size distribution by Mie theory. |
| Sulfated Ash | Gravimetric Analysis | Mass of inorganic residue after combustion with sulfuric acid treatment and subsequent ignition. |
| Related Substances | HPLC-DAD | Identification and quantification of structurally similar impurities using diode array detection and retention time matching. |
Technical Specifications of 4,5-DICHLOROPHTHALIC ANHYDRIDE
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow crystalline solid |
| Purity | >=98.5% (GC-MS) |
| Melting Point | 148–152°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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 4,5-DICHLOROPHTHALIC ANHYDRIDE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4,5-DICHLOROPHTHALIC ANHYDRIDE
Safety Information of 4,5-DICHLOROPHTHALIC ANHYDRIDE
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 4,5-DICHLOROPHTHALIC ANHYDRIDE
Industrial 4,5-DICHLOROPHTHALIC ANHYDRIDE 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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