China Factory Direct
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| CAS number | 300-85-6 |
| Product name | 3-hydroxybutyric acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeReagent GradeFood GradeCosmetic Grade |
| Packaging | 25KG/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 |
|---|---|---|
| Biomedical | Monomer for biodegradable plastics (e.g., PHB), used in drug delivery systems and implantable materials | Microbial fermentation (e.g., synthesis using algae or bacteria) |
| Food Industry | Used as a food additive (flavoring agent, acidulant) to enhance taste | Chemical synthesis or enzymatic catalysis |
| Cosmetics | Added to skincare products as a humectant and skin-conditioning agent | Extraction or fermentation to produce high-purity material |
| Industrial Manufacturing | Feedstock for producing eco-friendly plastics, resins, and adhesives | Chemical polymerization or bioconversion |
| Research | Metabolite biomarker (e.g., in ketosis studies) and biochemical reagent | Laboratory-scale synthesis or purification |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Quantifies 3-hydroxybutyric acid by neutralization with standardized sodium hydroxide solution using phenolphthalein or potentiometric endpoint detection. |
| Water Content | Karl Fischer Titration | Determines water content based on stoichiometric reaction of iodine with water in a methanol-based reagent system. |
| Specific Optical Rotation | Polarimetry | Measures the angle of rotation of plane-polarized light caused by chiral 3-hydroxybutyric acid in solution. |
| Residue on Ignition | Gravimetric Analysis | Determines non-volatile inorganic residue after high-temperature ashing of sample at 500-600 C. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals (e.g., Pb, Cd, Hg) after acid digestion by measuring atomic absorption at element-specific wavelengths. |
| Chloride Impurity | Ion Chromatography (IC) | Separates and quantifies chloride ions using anion-exchange column and conductivity detection. |
| Sulfate Impurity | Barium Sulfate Gravimetry | Precipitates sulfate as BaSO4 under acidic conditions and determines mass after filtration and drying. |
| Related Substances | High Performance Liquid Chromatography (HPLC) | Separates and quantifies structurally related impurities (e.g., acetoacetic acid, butyric acid) using reversed-phase C18 column and UV detection. |
| pH (1% aqueous solution) | Potentiometric pH Measurement | Measures hydrogen ion activity in a standardized aqueous solution using calibrated glass electrode. |
| Appearance | Visual Inspection | Assesses physical state, color, and clarity against established reference standards under controlled lighting. |
| Melting Point | Capillary Melting Point Determination | Determines temperature range at which solid sample transitions to liquid using calibrated melting point apparatus. |
| Residual Solvents | Gas Chromatography (GC) with FID | Identifies and quantifies volatile organic solvents (e.g., methanol, ethyl acetate) using capillary column and flame ionization detection. |
| Test Item | Specification |
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| Appearance | White crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 47.0–49.0°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Optical Rotation | -0.5° to +0.5° (c=1, H2O) |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.