4-Chloroformylphthalic anhydride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1204-28-0 |
| Product name | 4-Chloroformylphthalic anhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeSpecialty 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 4-Chloroformylphthalic anhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4-Chloroformylphthalic anhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4-Chloroformylphthalic anhydride
| Industry | Application | Process |
|---|---|---|
| Polymers | Curing agent, crosslinking agent | Reacted with resins via condensation polymerization |
| Chemical Intermediates | Production of other chemicals | Used as a synthetic raw material in chemical reactions |
Manufacturing Quality Control of 4-Chloroformylphthalic anhydride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC with UV detection | Quantification based on peak area comparison against a certified reference standard using reverse-phase chromatography and UV absorbance at 254 nm. |
| Acid Value | Acid-base titration with KOH in toluene-ethanol | Neutralization of acidic groups by standardized potassium hydroxide solution, calculated as mg KOH per g sample. |
| Moisture Content | Karl Fischer titration | Electrochemical determination of water via iodine-sulfur dioxide reaction in pyridine-methanol medium. |
| Residue on Ignition | Gravimetric analysis | Mass of non-volatile residue remaining after high-temperature ashing at 750 C in a muffle furnace. |
| Chloride Content | Potentiometric titration with AgNO3 | Precipitation of chloride ions as silver chloride, detected by silver ion-selective electrode endpoint. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification after acid digestion, based on atomic emission intensity at characteristic wavelengths. |
| Color (APHA) | Visual comparison or spectrophotometric measurement | Comparison of sample solution color intensity against platinum-cobalt standard solutions using APHA scale. |
| Melting Point | Capillary melting point apparatus | Determination of solid-to-liquid transition temperature range under controlled heating rate. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separation and quantification of volatile impurities using flame ionization detection after headspace or direct injection. |
| Free Acid (TMA content) | Acid-base titration with selective solvent | Titration of unreacted trimellitic acid using sodium hydroxide in aqueous-acetone mixture. |
| Particle Size Distribution | Laser diffraction | Analysis of scattered laser light intensity to determine volume-based particle size distribution in dispersed suspension. |
| Bulk Density | Graduated cylinder method | Mass per unit volume measured by tapping a known mass of powder into a calibrated cylinder until constant volume is achieved. |
Technical Specifications of 4-Chloroformylphthalic anhydride
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 78–82°C |
| Identification (NMR) | Consistent with structure |
| Identification (IR) | Consistent with structure |
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-Chloroformylphthalic anhydride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4-Chloroformylphthalic anhydride
Safety Information of 4-Chloroformylphthalic anhydride
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 4-Chloroformylphthalic anhydride
Industrial 4-Chloroformylphthalic 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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