3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester) Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 57757-57-0 |
| Product name | 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester) |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty 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 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester)
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester) Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester)
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Intermediates | Linking unit in the synthesis of drug molecules | Reacted with N-hydroxysuccinimide in organic solvent to form the corresponding ester compounds |
| Polymer Material Modification | Enhancing polymer crosslink density and thermal resistance | Used as a crosslinking agent in polymer network modification |
Manufacturing Quality Control of 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester)
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 260–280 nm, comparing peak area against a certified reference standard. |
| Residual Solvents (e.g., DMF, DCM) | GC-FID | Separation and quantification of volatile organic solvents by gas chromatography with flame ionization detection using internal standard calibration. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration based on the stoichiometric reaction of water with iodine and sulfur dioxide in pyridine/methanol medium. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-MS | Multi-element trace metal quantification via inductively coupled plasma mass spectrometry after acid digestion and matrix-matched calibration. |
| Acid Value | Acid-Base Titration | Neutralization of free carboxylic acid groups with standardized NaOH solution using phenolphthalein or potentiometric endpoint detection. |
| NHS Ester Content | 1H-NMR Spectroscopy | Quantitative assessment of NHS ester protons (δ ≈ 2.8 ppm) relative to an internal standard (e.g., 1,3,5-trimethoxybenzene) in deuterated chloroform. |
| Related Substances (Impurities) | HPLC-UV | Identification and quantification of structurally related impurities (e.g., mono-NHS ester, hydrolyzed acid) using gradient reverse-phase HPLC with UV detection. |
| Appearance & Color | Visual Inspection / APHA Color Scale | Comparison of sample solution (in specified solvent, e.g., acetonitrile) against platinum-cobalt color standards under controlled lighting. |
| Residue on Ignition | Gravimetric Analysis | Determination of inorganic residue after high-temperature ashing (700–800 °C) and precise weighing of the cooled crucible. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry or dispersed solid particles using light scattering principles to determine volume-based size distribution (D10, D50, D90). |
Technical Specifications of 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester)
| Test Item | Specification |
|---|---|
| Appearance | White solid |
| Purity | >=98.0% (by LC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 124–128°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Conforms to reference spectrum |
| Identification (IR) | Conforms to reference spectrum |
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 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester)
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester)
Safety Information of 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester)
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester)
Industrial 3,3`-Dithiobispropanoic acid bis(N-hydroxysucciniMde ester) 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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