China Factory Direct
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| CAS number | 4166-53-4 |
| Product name | 3-METHYLGLUTARIC ANHYDRIDE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeIndustrial GradeMaterial 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Polymers | Synthesis of resins and synthetic rubber | Undergoes polymerization with monomers in the presence of a catalyst |
| Pharmaceutical Intermediates | Preparation of drug molecules | Target compounds are synthesized via reactions such as esterification and reduction |
| Agrochemical Intermediates | Preparation of active pharmaceutical ingredients (APIs) for agrochemicals | Reacts with other raw materials via condensation, cyclization, and related reactions |
| Coatings | Preparation of unsaturated polyester resins | Used as a reactant in polymerization |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Quantifies acid anhydride content via hydrolysis to diacid followed by titration with standardized sodium hydroxide solution. |
| Moisture Content | Karl Fischer Titration | Measures water content based on stoichiometric reaction of iodine with water in a methanol-based reagent. |
| Color | Visual Comparison or Spectrophotometry (APHA/Pt-Co Scale) | Evaluates color intensity by comparing sample solution against platinum-cobalt standard solutions or measuring absorbance at 455 nm. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid, indicating purity and identity. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic impurities remaining after high-temperature ashing and weighing. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals (e.g., Pb, Cd, Hg) after acid digestion by measuring elemental absorption at characteristic wavelengths. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Detects chloride ions via precipitation with silver nitrate and endpoint detection using silver indicator electrode. |
| Related Substances | Gas Chromatography (GC) with FID | Separates and quantifies structurally related impurities (e.g., mono-acid, diacid, isomers) using capillary column and flame ionization detection. |
| Acid Value | Acid-Base Titration with KOH | Measures free carboxylic acid groups formed from partial hydrolysis, expressed as mg KOH per g sample. |
| Specific Optical Rotation | Polarimetry | Determines chiral purity by measuring rotation of plane-polarized light at specified wavelength and temperature. |
| Volatile Impurities | Headspace Gas Chromatography (HS-GC) | Identifies and quantifies low-boiling residual solvents (e.g., toluene, xylene) using equilibrium vapor phase analysis. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of solid particles in suspension by analyzing angular variation in laser light scattering. |
| Test Item | Specification |
|---|---|
| Appearance | White solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 52-56°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Acid Value (mg KOH/g) | 340-360 mg KOH/g |
| Odor | Characteristic mild acidic odor |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.