3-METHYL-ISATOIC ANHYDRIDE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 66176-17-8 |
| Product name | 3-METHYL-ISATOIC ANHYDRIDE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial 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 3-METHYL-ISATOIC ANHYDRIDE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3-METHYL-ISATOIC ANHYDRIDE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3-METHYL-ISATOIC ANHYDRIDE
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Industry | Synthesis of pharmaceutical intermediates | Used as an acylating agent in organic synthesis reactions |
| Chemical Industry | Synthesis of resins and plastic additives | Applied in esterification or condensation reactions |
| Pesticide Industry | Pesticide intermediates | Applied in the synthesis of herbicides or insecticides |
Manufacturing Quality Control of 3-METHYL-ISATOIC ANHYDRIDE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies 3-methylglutaric anhydride peak area relative to a calibrated standard curve using internal or external standardization. |
| Water Content | Karl Fischer Titration (Coulometric mode) | Electrochemical titration based on the stoichiometric reaction of iodine with water in an anhydrous pyridine/methanol solvent system. |
| Acid Value | Acid-Base Titration (NaOH in isopropanol/water) | Neutralization of acidic impurities (e.g., residual acid, hydrolyzed anhydride) with standardized sodium hydroxide solution using phenolphthalein or potentiometric endpoint detection. |
| Residue on Ignition | Gravimetric Analysis (Weight Loss on Ignition) | Measures non-volatile inorganic residue after controlled high-temperature ashing (700–800 °C) and subsequent weighing. |
| Heavy Metals (as Pb) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Quantifies trace metal elements by measuring characteristic atomic emission lines following high-temperature plasma atomization and excitation. |
| Color (APHA) | Visual or Instrumental Colorimetry (APHA scale) | Compares sample color to platinum-cobalt standard solutions using spectrophotometric measurement at 430 nm or visual matching against APHA color standards. |
| Residual Solvents (e.g., toluene, xylene) | Headspace Gas Chromatography (HS-GC) with FID | Quantifies volatile organic solvents via equilibrium partitioning into headspace followed by GC separation and flame ionization detection. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) with UV detection | Separates and quantifies structurally related impurities (e.g., 3-methylglutaric acid, isomers, dehydration by-products) using reversed-phase C18 column and UV absorbance at 210 nm. |
| Melting Point | Capillary Melting Point Determination | Measures temperature range over which solid transitions to liquid under controlled heating, indicating purity and identity via comparison to reference standard. |
| Specific Optical Rotation | Polarimetry | Determines enantiomeric excess or identity by measuring the angle of rotation of plane-polarized light induced by chiral centers in solution at specified wavelength (e.g., 589 nm) and concentration. |
| Chloride Content | Ion Chromatography (IC) with Conductivity Detection | Separates and quantifies chloride ions after sample hydrolysis and dilution, using anion-exchange column and suppressed conductivity detection. |
| Density | Oscillating U-tube Densitometry | Measures mass per unit volume based on resonant frequency shift of a vibrating U-shaped glass tube filled with sample at controlled temperature (e.g., 20 °C). |
Technical Specifications of 3-METHYL-ISATOIC ANHYDRIDE
| Test Item | Specification |
|---|---|
| Appearance | Light-green solid |
| Purity | >=98.5% (by LC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 52-56°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Odor | Characteristic mild odor |
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-METHYL-ISATOIC ANHYDRIDE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3-METHYL-ISATOIC ANHYDRIDE
Packaging of 3-METHYL-ISATOIC ANHYDRIDE
Industrial 3-METHYL-ISATOIC 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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