Benzoic anhydride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 93-97-0 |
| Product name | Benzoic anhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial GradeFood 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 Benzoic anhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Benzoic anhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Benzoic anhydride
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of acetylated drug intermediates, e.g., aspirin | Esterification with salicylic acid to produce acetylsalicylic acid |
| Pharmaceuticals | Synthesis of antibiotic and anti-inflammatory drug intermediates | Acylating agent for introduction of the benzoyl group |
| Chemicals | Synthesis of benzoate-based plasticizers | Transesterification with alcohols to produce benzoate esters |
| Chemicals | Synthesis of dye and fragrance intermediates | Acylation reagent in Friedel–Crafts reactions |
| Pesticides | Synthesis of fungicidal and insecticidal intermediates | Synthesis of benzoylurea pesticides via benzoyl group introduction |
| Polymers | Synthesis of resins and polymer modifiers | Crosslinking agent or end-group modifier in condensation polymerization |
| Food | Indirect precursor to benzoic acid, a food preservative | Hydrolysis to benzoic acid for preservation (subject to regulatory limits) |
Manufacturing Quality Control of Benzoic anhydride
| Test Item | Common Test Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state, and presence of impurities under natural or standard lighting to determine if it is a white crystalline or powdery substance. |
| Melting Point | Capillary Melting Point Method | The sample is packed into a capillary tube and heated gradually in a melting point apparatus; the initial and final melting temperatures are recorded to assess purity and characteristic properties. |
| Assay (Purity) | Acid-Base Titration | Benzoic anhydride is hydrolyzed to benzoic acid, which is then titrated with a standardized NaOH solution. The amount of alkali consumed is used to calculate the assay. |
| Moisture Content | Karl Fischer Titration | Measures trace moisture using coulometric or volumetric methods; suitable for moisture-sensitive organic anhydrides. |
| Solution Clarity and Color | Colorimetry / Spectrophotometry | Dissolve the sample in a suitable solvent (e.g., ethanol or water) and compare with standard color solutions to evaluate clarity and degree of coloration. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase HPLC system to separate benzoic anhydride from potential impurities (e.g., benzoic acid, unreacted starting materials), with UV detection for quantitative analysis. |
| Volatile Impurities | Gas Chromatography (GC) | Suitable for detecting residual solvents or low-boiling-point impurities; components are separated by GC and analyzed qualitatively and quantitatively using detectors such as FID. |
| Acid Value | Acid Value Titration | A weighed sample is dissolved in neutralized ethanol and titrated with standard sodium hydroxide to determine free acids (e.g., benzoic acid formed by hydrolysis), indicating sample stability. |
Technical Specifications of Benzoic anhydride
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 42.0-44.0°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Acid Value (mg KOH/g) | <=1.0 mg KOH/g |
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 Benzoic anhydride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Benzoic anhydride
Packaging of Benzoic anhydride
Industrial Benzoic 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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