Homophthalic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 89-51-0 |
| Product name | Homophthalic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeReagent 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 Homophthalic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Homophthalic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Homophthalic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Antibiotic synthesis | Used as an intermediate in the synthesis of cephalosporin antibiotics |
| Pharmaceuticals | Anti-inflammatory drug synthesis | Applied in the synthesis of nonsteroidal anti-inflammatory drugs (NSAIDs) |
| Pesticides | Fungicides | Serves as a fungicidal intermediate for the synthesis of organophosphorus fungicides |
| Chemical manufacturing | Synthesis of other organic acids | Used to synthesize derivatives such as ortho-aminophenylacetic acid |
| Research | Laboratory reagent | Applied in organic synthesis experiments and structural studies |
Manufacturing Quality Control of Homophthalic acid
| Detection Item | Common Testing Methods | Method Overview |
|---|---|---|
| Identification Test | Infrared Spectroscopy (IR) | Measures the infrared absorption spectrum of the sample and compares it with a reference spectrum to confirm the presence of characteristic functional groups of o-carboxybenzylacetic acid (e.g., carboxyl, benzene ring, methylene) based on matching absorption peaks. |
| Proton Nuclear Magnetic Resonance (¹H NMR) | Utilizes nuclear magnetic resonance technology to analyze chemical shifts, integration areas, and coupling constants of hydrogen atoms in the sample, verifying whether the molecular structure matches the theoretical spectrum of o-carboxybenzylacetic acid. | |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column with an appropriate water-organic solvent (e.g., methanol or acetonitrile) mobile phase. Detection is performed using a UV detector (typically at 230–260 nm), with quantification achieved via external standard or internal standard method. |
| Acid-Base Titration | Leverages the acidic nature of the carboxyl group in o-carboxybenzylacetic acid. The sample is titrated with standardized sodium hydroxide solution using phenolphthalein as indicator, allowing calculation of purity. Suitable for rapid quantitative analysis of high-purity samples. | |
| Related Substances (Impurity Testing) | High-Performance Liquid Chromatography (HPLC) | Employs gradient or isocratic elution to separate and detect potential process impurities and degradation products (e.g., decarboxylation or oxidation byproducts). Impurity levels are typically controlled using main peak area normalization or reference standard methods. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Constant Pressure Drying Method | Dry the sample at a specified temperature (e.g., 105°C) until constant weight is achieved, measuring mass loss to assess moisture and volatile substance content. |
| Residue on Ignition | High-Temperature Incineration Method | Ignites the sample at high temperature (typically 700–800°C) until constant weight is reached, determining the residue (ash) content to control inorganic impurities. |
| Heavy Metals | Thioacetamide Method (Colorimetry) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Detects total or individual heavy metal elements (e.g., lead, cadmium, mercury, arsenic) through colorimetric reactions or high-sensitivity instrumentation, ensuring compliance with pharmacopeial or industry standards. |
| pH Value | pH Meter Measurement | Prepares a solution of defined concentration (e.g., 1% w/v) in water, then measures pH using a calibrated pH meter, reflecting the acidity strength and possible presence of acidic/basic impurities. |
Technical Specifications of Homophthalic acid
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=98.0% (HPLC) |
| Melting Point | 142-146°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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 Homophthalic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Homophthalic acid
Packaging of Homophthalic acid
Industrial Homophthalic acid 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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