China Factory Direct
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| CAS number | 7198-10-9 |
| Product name | 2-hydroxy-2-(4-hydroxyphenyl)acetic acid;hydrate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeReagent GradeIndustrial GradeSpecialty GradeCosmetic 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Industry | Synthesis of pharmaceutical intermediates | Used in the synthesis of antiviral and cardiovascular drugs |
| Agrochemical Industry | Preparation of agrochemical intermediates | Applied in the production of active ingredients for insecticides or fungicides |
| Chemical Industry | Chemical reagent | Employed as a catalyst or ligand in organic synthesis reactions |
| Fragrance Industry | Synthesis of fragrance intermediates | Used in the preparation of aromatic compounds |
| Research & Development | Laboratory research | Utilized as analytical reference standards or experimental reagents |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (DL-4-Hydroxymandelic Acid Monohydrate) | HPLC with UV detection | Quantitative determination using reversed-phase HPLC and UV absorbance at ~280 nm, calibrated against certified reference standard. |
| Water Content | Karl Fischer titration | Volumetric or coulometric titration based on the reaction of water with iodine, sulfur dioxide, and base in methanol/pyridine medium. |
| Residual Solvents | Gas Chromatography (GC) with FID | Separation and quantification of volatile organic solvents (e.g., methanol, acetone, ethyl acetate) using capillary column and flame ionization detection. |
| Heavy Metals | ICP-OES | Multi-element quantification of Pb, Cd, Hg, As, and other regulated metals after acid digestion and plasma excitation. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and conductivity-based detection of chloride anions using anion-exchange column and suppressed conductivity detector. |
| Sulfated Ash | Gravimetric analysis | Combustion at 550-600 C followed by sulfuric acid treatment and final weighing of non-volatile residue. |
| Optical Rotation | [alpha]D measurement | Determination of specific rotation using sodium D-line light source in a polarimeter to assess chiral purity and identity. |
| Related Substances | HPLC with UV detection | Separation and quantification of structurally related impurities (e.g., mandelic acid, 4-hydroxybenzaldehyde) using gradient elution and UV detection. |
| pH of Aqueous Solution | Potentiometric pH measurement | Measurement of hydrogen ion activity in a 1% w/v aqueous solution using calibrated glass electrode and pH meter. |
| Melting Point | Capillary melting point apparatus | Determination of temperature range at which solid-to-liquid phase transition occurs, indicating purity and identity. |
| Particle Size Distribution | Laser Diffraction | Analysis of particle size distribution in dry or wet dispersion using Mie scattering theory and optical detection. |
| Microbial Limits | Membrane filtration and plate count | Enumeration of aerobic microorganisms and detection of specified pathogens (e.g., E. coli, S. aureus) per pharmacopeial methods. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 120-124°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Optical Rotation | +/- 0.5° (c=1, in 1M HCl) |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.