4-Amino-3-hydroxybenzoic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 2374-03-0 |
| Product name | 4-Amino-3-hydroxybenzoic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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 4-Amino-3-hydroxybenzoic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4-Amino-3-hydroxybenzoic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4-Amino-3-hydroxybenzoic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Used in the synthesis of antimicrobial agents and dye intermediates | Applied as an organic synthetic intermediate in condensation or coupling reactions |
| Dyes | Used as an intermediate for azo dyes and reactive dyes | Applied in the preparation of colored compounds via diazotization, coupling, and related reactions |
| Chemicals | Used in the synthesis of fine chemicals, such as precursors to fluorescent whitening agents | Applied in functional group transformation processes, including acylation, esterification, and reduction |
Manufacturing Quality Control of 4-Amino-3-hydroxybenzoic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 254 nm, comparing peak area against a certified reference standard. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient HPLC-UV; identification by retention time matching and peak area normalization. |
| Residual Solvents | GC-FID | Headspace GC with flame ionization detection to quantify common solvents (e.g., methanol, acetone, ethyl acetate) based on calibrated response factors. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to determine water content via stoichiometric reaction. |
| Heavy Metals | ICP-OES | Multi-element quantification after acid digestion, measuring emission intensities of metals (e.g., Pb, Cd, Ni, Fe) at characteristic wavelengths. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride ions using suppressed conductivity detection after anion exchange. |
| Sulfated Ash | Gravimetric Analysis | Ignition of sample at 700-800 C followed by weighing of inorganic residue after sulfuric acid treatment. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, using calibrated capillary apparatus per USP <741>. |
| Appearance (Color and Clarity) | Visual Inspection | Assessment of crystalline form, color (vs. APHA scale), and solution clarity in specified solvent (e.g., water/methanol). |
| pH of Aqueous Solution | pH Meter | Measurement of pH in a saturated aqueous suspension or defined dilution using calibrated pH electrode. |
| Particle Size Distribution | Laser Diffraction | Analysis of particle size distribution in dispersed phase using Mie scattering theory and validated optical model. |
| Loss on Drying | Thermogravimetric Analysis (TGA) | Weight loss measurement upon heating to 105 C under nitrogen, reflecting volatile content including residual moisture and solvents. |
Technical Specifications of 4-Amino-3-hydroxybenzoic acid
| Test Item | Specification |
|---|---|
| Appearance | Brown solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 195–199 °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 4-Amino-3-hydroxybenzoic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4-Amino-3-hydroxybenzoic acid
Safety Information of 4-Amino-3-hydroxybenzoic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 4-Amino-3-hydroxybenzoic acid
Industrial 4-Amino-3-hydroxybenzoic 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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