4-Hydroxybenzenesulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 98-67-9 |
| Product name | 4-Hydroxybenzenesulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeElectronic GradeReagent 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-Hydroxybenzenesulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4-Hydroxybenzenesulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4-Hydroxybenzenesulfonic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of pharmaceutical intermediates for active ingredients such as anti-inflammatory agents and antioxidants | Used as a key intermediate in synthetic routes, participating in condensation, sulfonation, and reduction reactions |
| Chemical Reagents | Laboratory analysis and preparation of reference standards | Used after purification via recrystallization or fractional distillation |
| Dye Industry | Intermediate for manufacturing azo dyes and acid dyes | Coupled with aromatic amines to form dyes |
| Polymer Materials | Precursor for polymer modifiers or crosslinking agents | Sulfonic acid groups are introduced during polymerization to enhance hydrophilicity or stability |
| Electronic Chemicals | Manufacture of liquid crystal display materials or semiconductor cleaning agents | Used as a surfactant or acidity regulator in formulation design |
Manufacturing Quality Control of 4-Hydroxybenzenesulfonic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Quantifies 4-hydroxybenzenesulfonic acid by neutralizing its sulfonic acid group using standardized sodium hydroxide solution. |
| Moisture Content | Karl Fischer Titration | Determines water content based on the stoichiometric reaction of iodine with sulfur dioxide and water in a methanol-based reagent. |
| pH (1% aqueous solution) | pH Meter Measurement | Measures hydrogen ion activity in a 1% w/v aqueous solution using a calibrated pH electrode. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals after wet digestion by measuring absorbance of characteristic atomic vapor absorption lines. |
| Sulfate (SO4^2- impurity) | Gravimetric Analysis | Precipitates sulfate as barium sulfate and determines content by weighing the dried precipitate. |
| Chloride (Cl- impurity) | Potentiometric Titration with AgNO3 | Detects chloride ions via silver nitrate titration using a silver indicator electrode to identify endpoint potential change. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue remaining after high-temperature incineration at 700-800 C. |
| Organic Impurities (Related Substances) | High-Performance Liquid Chromatography (HPLC) | Separates and quantifies structurally related compounds using reversed-phase C18 column and UV detection at 254 nm. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid, indicating purity and identity. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of visible particles or discoloration against standard white background under controlled lighting. |
| Iron (Fe) Content | ICP-OES | Quantifies iron after acid digestion by measuring intensity of characteristic atomic emission lines in inductively coupled plasma. |
| Loss on Drying | Thermogravimetric Analysis (TGA) | Measures mass loss upon heating to 105 C for 2 hours, reflecting volatile components including residual solvents and moisture. |
Technical Specifications of 4-Hydroxybenzenesulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | Brown liquid |
| Assay | ≥75.0% |
| Free acid | ≤2.0% |
| Fe | ≤30 ppm |
| Sulfur dioxide | ≤30 ppm |
| Free phenol | ≤0.5% |
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-Hydroxybenzenesulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4-Hydroxybenzenesulfonic acid
Packaging of 4-Hydroxybenzenesulfonic acid
Industrial 4-Hydroxybenzenesulfonic 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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