(S)-(-)-2,2'-Diamino-1,1'-binaphthalene Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 18531-95-8 |
| Product name | (S)-(-)-2,2'-Diamino-1,1'-binaphthalene |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeReagent GradeIndustrial 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) |
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Documents We Provide for (S)-(-)-2,2'-Diamino-1,1'-binaphthalene
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk (S)-(-)-2,2'-Diamino-1,1'-binaphthalene Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of (S)-(-)-2,2'-Diamino-1,1'-binaphthalene
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical R&D | Chiral ligands for asymmetric synthesis | Used as chiral ligands in transition metal-catalyzed asymmetric reactions to synthesize optically active pharmaceutical intermediates |
| Materials Science | Preparation of chiral recognition materials | Applied in the preparation of chiral sensors or chiral separation materials for polymer or functional material synthesis processes |
| Chemical Analysis | Chiral resolving reagent | Employed as a chiral derivatizing agent for enantiomer identification and separation in analytical methods such as high-performance liquid chromatography (HPLC) |
| Fine Chemicals | Precursor for chiral catalyst synthesis | Used in the synthesis of BINOL-based or structurally analogous chiral catalysts for catalytic production of fine chemicals |
Manufacturing Quality Control of (S)-(-)-2,2'-Diamino-1,1'-binaphthalene
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component using reversed-phase HPLC with UV detection at 254 nm, comparing peak area to a certified reference standard. |
| Enantiomeric Excess (ee) | Chiral HPLC | Measures enantiomeric ratio using a chiral stationary phase and UV detection, calculating ee from peak areas of (S) and (R) enantiomers. |
| Residual Solvents | GC-FID | Detects and quantifies volatile organic solvents (e.g., toluene, methanol) by gas chromatography with flame ionization detection against calibrated standards. |
| Water Content | Karl Fischer Titration | Determines water mass fraction via coulometric or volumetric titration using iodine generation and stoichiometric reaction with water. |
| Heavy Metals (as Pb) | ICP-OES | Quantifies total heavy metals (Pb, Cd, Hg, As, Ni) after acid digestion by inductively coupled plasma optical emission spectroscopy. |
| Chloride Impurity | Ion Chromatography | Separates and quantifies chloride ions using anion-exchange column and suppressed conductivity detection. |
| Melting Point | Capillary Melting Point Apparatus | Measures temperature range at which solid transitions to liquid, indicating purity and identity via comparison to literature value (~140-142 C). |
| Specific Optical Rotation | [alpha]D Measurement | Determines specific rotation at 589 nm using a polarimeter; confirms chiral integrity and batch-to-batch consistency. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after high-temperature ashing (700-800 C) and weighing. |
| Related Substances | HPLC-UV (Forced Degradation) | Identifies and quantifies structurally related impurities (e.g., mono-naphthylamine, oxidation products) using stability-indicating HPLC method. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of foreign particles against defined acceptance criteria under controlled lighting. |
| Bulk Density | Tap Density Tester | Measures mass per unit volume after standardized tapping; indicates flowability and handling characteristics for formulation use. |
Technical Specifications of (S)-(-)-2,2'-Diamino-1,1'-binaphthalene
| Test Item | Specification |
|---|---|
| Appearance | Off-white solid |
| Purity | >=98.0% (LC-MS), >=99% ee |
| Optical Rotation | -157 ± 10 deg (c=1, in CHCl3) |
| Melting Point | 245–249 °C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=10 ppm |
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 (S)-(-)-2,2'-Diamino-1,1'-binaphthalene
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of (S)-(-)-2,2'-Diamino-1,1'-binaphthalene
Safety Information of (S)-(-)-2,2'-Diamino-1,1'-binaphthalene
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of (S)-(-)-2,2'-Diamino-1,1'-binaphthalene
Industrial (S)-(-)-2,2'-Diamino-1,1'-binaphthalene 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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