Crotonic anhydride Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 623-68-7 |
| Product name | Crotonic anhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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 Crotonic anhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Crotonic anhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Crotonic anhydride
| Industry | Application | Process |
|---|---|---|
| Chemical Industry | Crosslinking agent for synthetic resins and plastics | Forms crosslinked structures via reaction with polyols or epoxy resins |
| Pharmaceutical Industry | Synthesis of pharmaceutical intermediates | Used in the synthesis of antifungal agents and other organic compounds |
| Pesticide Industry | Synthesis of pesticide intermediates | Applied in the preparation of certain herbicides and insecticides |
| Polymer Materials | Production of polyester resins and coatings | Acts as an anhydride monomer in condensation polymerization |
| Organic Synthesis | Synthesis of other organic anhydrides or esters | Generates corresponding derivatives via hydrolysis or esterification |
Manufacturing Quality Control of Crotonic anhydride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration | Quantifies total acid anhydride content by hydrolysis followed by titration with standardized NaOH solution. |
| Water Content | Karl Fischer Titration | Measures trace water via coulometric or volumetric reaction between water and iodine in pyridine/methanol medium. |
| Color | Visual Comparison or APHA Color Scale | Evaluates color intensity by comparing sample against platinum-cobalt standard solutions. |
| Acidity (as Crotonic Acid) | Acid-Base Titration | Determines free acid impurity by direct titration with standardized NaOH using phenolphthalein indicator. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after controlled high-temperature ashing and weighing. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) | Quantifies metal impurities (e.g., Pb, Fe, Cu) by measuring absorbance of element-specific atomic vapor. |
| Chloride Content | Potentiometric Titration | Detects chloride ions via titration with silver nitrate using silver electrode for endpoint detection. |
| Refractive Index | Refractometry | Determines purity and concentration based on light refraction angle at specified temperature. |
| Density | Pycnometry | Measures mass per unit volume using calibrated glass pycnometer at controlled temperature. |
| Boiling Point | Distillation with Thermometer | Identifies boiling range under reduced pressure to assess volatility and presence of low- or high-boiling impurities. |
| Gas Chromatographic Purity | Gas Chromatography (GC-FID) | Separates and quantifies individual components using capillary column and flame ionization detection. |
| Non-Volatile Matter | Gravimetric Analysis | Determines insoluble or non-volatile residue after solvent evaporation and drying under vacuum. |
Technical Specifications of Crotonic anhydride
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Acid Value (mg KOH/g) | 120–135 mg KOH/g |
| Refractive Index (n20/D) | 1.435–1.445 |
| Relative Density (20°C/25°C) | 1.070–1.090 g/cm³ |
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 Crotonic anhydride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Crotonic anhydride
Industrial Crotonic 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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply