L-Pyroglutamic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 98-79-3 |
| Product name | L-Pyroglutamic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeIndustrial GradeSpecialty 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 L-Pyroglutamic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L-Pyroglutamic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L-Pyroglutamic acid
| Industry | Application | Process |
|---|---|---|
| Food | Flavor enhancer | Added to food as a flavoring agent |
| Pharmaceuticals | Pharmaceutical intermediate | Used in the synthesis of other pharmaceutical compounds or as a raw material |
| Chemicals | Synthesis intermediate | Employed in organic synthesis reactions |
| Animal feed | Additive | Added to animal feed as a nutritional supplement |
Manufacturing Quality Control of L-Pyroglutamic acid
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Identification Test | Infrared Spectroscopy (IR) | Determine the infrared absorption spectrum of the L-pyroglutamic acid sample and compare it with the reference spectrum to confirm characteristic functional group peaks (such as carboxyl and amide bonds), for structural identification. |
| Identification Test | Thin-Layer Chromatography (TLC) | Develop the sample and reference standard under identical conditions, then compare the Rf values and color reactions of spots to determine consistency; used for preliminary identification. |
| Assay | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with a mobile phase consisting of phosphate buffer-methanol or acetonitrile. Detection is performed using a UV detector (typically around 210 nm). Quantification of L-pyroglutamic acid is achieved via external or internal standard methods, offering high sensitivity and good reproducibility. |
| Assay | Acid-Base Titration | Utilize the acidic groups of L-pyroglutamic acid and titrate with a standardized sodium hydroxide solution. The endpoint is determined potentiometrically or by indicator, and content is calculated accordingly. Suitable for rapid determination of high-purity samples. |
| Specific Optical Rotation | Polarimetry | Measure the optical rotation of a solution of L-pyroglutamic acid at a specified temperature and wavelength (typically the sodium D line, 589 nm), then calculate the specific optical rotation to verify optical purity and configuration (L-form). |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Atmospheric Drying Method | Dry the sample at 105°C until constant weight is achieved, then determine the percentage of weight loss to assess moisture and volatile content. |
| Residue on Ignition | High-Temperature Ignition Method | Ignite the sample at high temperature (usually 700–800°C) and weigh the residual ash to control total inorganic impurities. |
| Heavy Metals | Thioacetamide Method (Colorimetric) or Atomic Absorption Spectroscopy (AAS) | Determine total levels of heavy metals such as lead, cadmium, mercury, and arsenic through color development reaction or instrumental analysis, ensuring compliance with pharmacopoeial or food additive limit requirements. |
| pH Value | pH Meter Method | Prepare an aqueous solution of L-pyroglutamic acid at a defined concentration (e.g., 1%), then measure its pH value using a calibrated pH meter to reflect its acid-base properties and potential influence of impurities. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Use gradient or isocratic elution to separate and detect possible impurities such as synthesis by-products and degradation products. Perform limit testing using area normalization or correction factor-based main component self-reference method. |
Technical Specifications of L-Pyroglutamic acid
| Test Item | Specification |
|---|---|
| Appearance | White to almost white powder or crystals |
| Purity | >=98.5% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 73-77°C |
| Optical Rotation | -8.0 to -12.0° (c=1, in H2O) |
| Total Impurities | <=1.5% (HPLC) |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
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 L-Pyroglutamic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of L-Pyroglutamic acid
Packaging of L-Pyroglutamic acid
Industrial L-Pyroglutamic 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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