4-(N-Ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 25646-77-9 |
| Product name | 4-(N-Ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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 25646-77-9
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 25646-77-9 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 25646-77-9
| Industry | Application | Process |
|---|---|---|
| Cosmetics | Ingredient in hair dyes | Used as an intermediate in oxidative hair dye formulations |
| Textiles | Fiber dyeing | Applied in the synthesis of acid mordant dyes |
| Printing | Ink manufacturing | Used as a dye intermediate for producing acid dyes |
| Pharmaceuticals | Intermediate | Serves as a precursor compound in the synthesis of certain pharmaceuticals |
Manufacturing Quality Control of 25646-77-9
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 254 nm, comparing peak area against a certified reference standard. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient HPLC-UV; identification based on retention time matching and threshold limits per ICH Q3B. |
| Residual Solvents | GC-FID | Headspace GC with flame ionization detection to quantify volatile organic solvents (e.g., ethanol, acetone) against calibrated standards. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to determine trace water content via stoichiometric reaction. |
| Sulfate Content | Ion Chromatography (IC) | Separation and quantification of sulfate anion using suppressed conductivity detection after elution with carbonate/bicarbonate buffer. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-MS | Multi-element quantification of toxic metals after acid digestion, using inductively coupled plasma mass spectrometry for sub-ppb sensitivity. |
| pH (1% aqueous solution) | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a 1% w/v aqueous solution at 25 C using calibrated pH electrode. |
| Loss on Drying (LOD) | Gravimetric Thermogravimetry | Weight loss measured after drying sample at 105 C for 2 hours under controlled atmosphere to determine volatile and moisture content. |
| Residue on Ignition | Sulfated Ash Gravimetry | Ignition of sample with sulfuric acid followed by high-temperature ashing; residual inorganic matter weighed as sulfate ash. |
| Chloride Impurity | Potentiometric Titration | Titration with silver nitrate using silver indicator electrode to detect endpoint based on change in potential. |
| Bulk Density | Tap Density Measurement | Mass per unit volume determined after standardized tapping of sample in calibrated cylinder per USP <616>. |
| Microbial Limits | Membrane Filtration & Culture | Enumeration of aerobic microorganisms and detection of specified pathogens (e.g., E. coli) following compendial culture methods. |
Technical Specifications of 25646-77-9
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 178–182°C |
| Total Impurities | <=2.0% (HPLC) |
| Single Impurity | <=0.5% (HPLC) |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 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 25646-77-9
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 25646-77-9
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Industrial 25646-77-9 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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