China Factory Direct
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| CAS number | 34271-54-0 |
| Product name | L-Theanine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 |
|---|---|---|
| Food & Beverage | Flavor enhancement; soothing effect | Used as a functional food additive, directly incorporated into beverages, confectionery, or dietary supplements |
| Pharmaceuticals & Nutraceuticals | Anxiolytic activity; sleep quality improvement; cognitive function enhancement | Formulated into capsules, tablets, or oral liquids for neuroregulatory health products |
| Cosmetics | Antioxidant activity; skin irritation soothing | Incorporated into skincare formulations for products such as moisturizers and serums to enhance calming efficacy |
| Research | Neuroscience research reagent | Applied in in vitro or in vivo experiments to investigate its mechanism of action on the central nervous system |
| Detection Item | Common Analytical Method | Method Overview |
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| Assay (DL-Theanine Content) | HPLC-UV | Separation on reversed-phase column with UV detection at 200 nm; quantification against reference standard. |
| Optical Rotation | [alpha]D Measurement | Measurement of specific rotation using sodium D-line light source to confirm chiral composition. |
| Loss on Drying | Gravimetric (105 C, 2 h) | Weight loss after drying at 105 C for 2 h under atmospheric pressure. |
| Residue on Ignition | Gravimetric (500-600 C) | Weight of inorganic residue remaining after ignition at 500-600 C. |
| Heavy Metals (as Pb) | AAS or ICP-OES | Atomic absorption or optical emission measurement after acid digestion and matrix matching. |
| Chloride | Argentometric Titration (Mohr method) | Titration with silver nitrate using potassium chromate indicator; endpoint signaled by red Ag2CrO4 precipitate. |
| Sulfate | Barium Sulfate Gravimetry | Precipitation as BaSO4 followed by ignition and weighing of the dried precipitate. |
| Related Substances | HPLC-UV | Separation and detection of impurities using gradient HPLC with UV detection; peak area comparison to main peak. |
| Water Content | Karl Fischer Titration | Electrochemical titration with iodine reagent; quantifies water based on stoichiometric reaction with iodine and SO2. |
| pH (1% aqueous solution) | Potentiometric pH Measurement | Measurement using calibrated glass electrode in a 1% w/v aqueous solution at 25 C. |
| Microbial Limits | Membrane Filtration / Plate Count | Enumeration of aerobic microorganisms and absence testing for specified pathogens per USP <61> and <62>. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to determine volume-based particle size distribution. |
| Test Item | Specification |
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| Appearance | White crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 203-207°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Optical Rotation | -1.5° to +1.5° (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.