3,5-Dihydroxybenzoic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 99-10-5 |
| Product name | 3,5-Dihydroxybenzoic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeFood GradeCosmetic 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 3,5-Dihydroxybenzoic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3,5-Dihydroxybenzoic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3,5-Dihydroxybenzoic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Intermediate in the synthesis of the antifungal agent terbinafine | Prepared via multi-step organic synthesis, including acid chlorination and aminolysis, to yield terbinafine |
| Pharmaceuticals | Key chiral intermediate for the synthesis of the lipid-lowering drug atorvastatin calcium | Chiral center constructed through esterification, asymmetric hydrogenation, and hydrolysis |
| Food | Natural antioxidant and food preservative | Directly incorporated into oils, meat products, and other foods to scavenge free radicals via its phenolic hydroxyl groups |
| Personal Care | Skin-lightening agent and antioxidant additive | Incorporated into formulations such as serums and creams to inhibit tyrosinase activity and mitigate oxidative stress |
| Materials Science | Metal ion chelating agent for functional polymer modification | Complexed with Fe³⁺, Cu²⁺, and other metal ions and introduced into polyurethane or epoxy resin systems to enhance weather resistance |
Manufacturing Quality Control of 3,5-Dihydroxybenzoic acid
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Identification | Infrared Spectroscopy (IR) | Determine the infrared absorption spectrum of the sample and compare it with standard spectra to confirm characteristic functional groups of 3,5-dihydroxybenzoic acid (such as phenolic hydroxyl and carboxyl groups) by identifying their absorption peaks. |
| Ultraviolet-Visible Spectrophotometry (UV-Vis) | Use its characteristic absorption peak at specific wavelengths (e.g., approximately 260–280 nm) for qualitative identification. | |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 chromatographic column with methanol-water or acetonitrile-water (often containing a small amount of acid to adjust pH) as the mobile phase, and a UV detector (e.g., at 270 nm) for quantitative analysis of the main component content. |
| Acid-Base Titration | Utilize the acidity of the carboxyl group and titrate with a sodium hydroxide standard solution. Use phenolphthalein or potentiometric methods to indicate the endpoint, and calculate the total acid content (suitable for samples with high purity). | |
| Related Substances/Impurity Check | High-Performance Liquid Chromatography (HPLC) | Use gradient or isocratic elution procedures to separate and detect possible synthetic intermediates, by-products, or degraded impurities. This method is often shared with the content determination but focuses on identifying impurity peaks and controlling their limits. |
| Dry 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, and measure the mass loss to evaluate the water and volatile matter content. |
| Residue on Ignition | High-Temperature Incineration Method | Weigh the residual inorganic substances after incinerating the sample at a high temperature (e.g., 700–800°C), used to control the total amount of inorganic impurities. |
| Heavy Metals | Atomic Absorption Spectrometry (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Determine the content of heavy metals such as lead, arsenic, cadmium, and mercury after sample digestion, ensuring compliance with pharmacopoeia or industry limit standards. |
| pH Value | pH Meter Measurement Method | Prepare a solution of certain concentration (e.g., 1%) in water, and directly measure the pH using a calibrated pH meter, reflecting its acidity strength and potential acidic or basic impurities. |
Technical Specifications of 3,5-Dihydroxybenzoic acid
| Test Item | Specification |
|---|---|
| Appearance | Pale-brown crystalline solid |
| Purity | >=98.0% (by LC-MS) |
| Melting Point | 215–219 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Acid Value (mg KOH/g) | 340–360 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 3,5-Dihydroxybenzoic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3,5-Dihydroxybenzoic acid
Packaging of 3,5-Dihydroxybenzoic acid
Industrial 3,5-Dihydroxybenzoic 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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