518-82-1 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 518-82-1 |
| Product name | 518-82-1 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 518-82-1
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 518-82-1 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 518-82-1
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Antimicrobial agent | Used in the preparation of antimicrobial drugs following extraction or synthesis |
| Pharmaceuticals | Laxative | Used in the preparation of laxative formulations |
| Pharmaceuticals | Anti-inflammatory agent | Used in the synthesis of anti-inflammatory formulations |
| Food | Colorant | Used for food coloring following extraction |
| Cosmetics | Skin care ingredient | Incorporated into skin care products to leverage its antioxidant properties |
| Textiles | Dye | Applied in natural dyeing processes |
| Analytical Chemistry | Reagent | Used in biochemical analysis and testing |
Manufacturing Quality Control of 518-82-1
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component by separation on reversed-phase column and UV detection at ~254 nm, comparing peak area to calibrated standard. |
| Related Substances | HPLC-DAD or HPLC-MS | Separates and detects structurally similar impurities (e.g., emodin analogs, synthesis intermediates) using UV spectra or mass identification. |
| Residual Solvents | GC-FID | Separates and quantifies volatile organic solvents (e.g., methanol, ethyl acetate) via capillary column and flame ionization detection. |
| Heavy Metals | ICP-MS | Measures trace metal contaminants (Pb, Cd, As, Hg, Cr) after acid digestion using inductively coupled plasma mass spectrometry for ppt-level sensitivity. |
| Loss on Drying (LOD) | Gravimetric (105 °C, 2 h) | Determines volatile content (e.g., water, residual solvents) by weight loss upon controlled heating under specified conditions. |
| Residue on Ignition (Sulfated Ash) | Gravimetric (500–600 °C) | Measures inorganic residue after charring and sulfuric acid treatment followed by high-temperature ignition. |
| Particle Size Distribution | Laser Diffraction | Analyzes size distribution of solid particles in suspension using angular scattering pattern of laser light. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which crystalline solid transitions to liquid, indicating purity and identity. |
| Specific Optical Rotation | Polarimetry | Measures rotation of plane-polarized light by chiral molecules; used to confirm stereochemical integrity (though dextro/levo form may vary). |
| Water Content | Karl Fischer Titration | Quantifies water via stoichiometric iodine–sulfur dioxide reaction in anhydrous methanol-based medium. |
| Microbial Limits | Membrane Filtration + Culture | Detects and enumerates aerobic microorganisms (TAMC) and molds/yeasts (TYMC) using selective agar media and incubation. |
| pH of Aqueous Suspension | Potentiometric pH Measurement | Measures hydrogen ion activity in a standardized aqueous suspension (e.g., 1% w/v) using calibrated pH electrode. |
| Organochlorine Pesticide Residues | GC-ECD | Detects and quantifies chlorinated pesticides (e.g., DDT, HCH isomers) using electron capture detection after extraction and cleanup. |
| Polycyclic Aromatic Hydrocarbons (PAHs) | GC-MS/MS | Identifies and quantifies carcinogenic PAHs (e.g., benzo[a]pyrene) via selective reaction monitoring after solvent extraction and silica gel cleanup. |
Technical Specifications of 518-82-1
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.5% (HPLC) |
| Melting Point | 254-257°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| 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 518-82-1
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 518-82-1
Packaging of 518-82-1
Industrial 518-82-1 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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