China Factory Direct
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| CAS number | 2641-01-2 |
| Product name | 2641-01-2 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Chemical Analysis & Testing | Acid-base titration indicator | Used in non-aqueous titrations (e.g., titration of weak acids or bases in pyridine or acetonitrile media); color change range: pH 4.4–6.2 (red to yellow); serves as a sharper-color-change alternative to methyl red. |
| Chemical Analysis & Testing | Complexometric titration indicator | Serves as a metal ion indicator in EDTA complexometric titrations for determining metal ions such as bismuth (Bi), with a distinct endpoint color change. |
| Biochemistry & Pharmaceuticals | Biological stain | Used for staining biological tissue sections and for differential staining in bacterial culture media to assess microbial metabolic activity or cellular structure. |
| Organic Synthesis | Intermediate | Serves as an organic synthesis intermediate in the preparation of other azo dyes or functional compounds. |
| Education & Research | Physicochemical laboratory reagent | Used as a standard reagent in analytical chemistry laboratories at universities and research institutions to demonstrate acid-base indicator principles and titration analysis techniques. |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Measures absorbance at lambda-max (approx. 550 nm) and calculates concentration using Beer-Lambert law and certified reference standard. |
| Loss on Drying | Gravimetric Analysis (Thermogravimetry) | Determines volatile content by measuring mass loss after drying at 105 C for 2 hours under controlled humidity. |
| Residue on Ignition | Weight Loss on Ignition | Quantifies inorganic ash content by ignition at 600 C until constant weight, followed by gravimetric determination. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measures total heavy metal content after acid digestion by quantifying lead absorption at characteristic wavelength (283.3 nm). |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Determines chloride ion concentration via argentometric titration using silver nitrate and a silver electrode. |
| Sulfate Impurity | Gravimetric Analysis (BaSO4 Precipitation) | Precipitates sulfate as barium sulfate, filters, dries, and weighs to calculate sulfate content. |
| pH of Aqueous Solution | pH Potentiometry | Measures hydrogen ion activity in a 1% w/v aqueous solution using calibrated pH electrode and buffer standards. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separates and quantifies residual solvents using capillary column and flame ionization detection. |
| Melting Point | Capillary Melting Point Determination | Observes temperature range over which solid transitions to liquid using calibrated melting point apparatus. |
| Water Content | Karl Fischer Titration | Quantifies water via coulometric or volumetric reaction between iodine, sulfur dioxide, and water in pyridine/methanol medium. |
| Color Value (APHA) | Visual Comparison or Spectrophotometric APHA | Compares sample solution color intensity against platinum-cobalt standard solutions or measures absorbance at 455 nm. |
| Bulk Density | Volumetric Gravimetry | Calculates mass per unit volume by measuring mass of material freely poured into a calibrated cylinder. |
| Test Item | Specification |
|---|---|
| Appearance | Red crystalline powder |
| Purity | >=98.5% |
| Melting Point | 140-144°C |
| Total Impurities | <=1.0% |
| Single Impurity | <=0.3% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.