China Factory Direct
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| CAS number | 93050-80-7 |
| Product name | REACTIVE YELLOW 145 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeMaterial 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) |
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 |
|---|---|---|
| Textile Industry | Reactive dyes for dyeing cellulose fibers such as cotton, linen, and viscose | Level dyeing, exhaust dyeing, pad dyeing |
| Dyeing and Printing Industry | Dyeing agents with high levelness and fastness, suitable for medium-temperature dyeing | Medium-temperature fixation (60–80 °C) |
| Chemical Synthesis | Intermediate for synthesizing other reactive dyes or functional chemicals | Nucleophilic substitution, coupling reactions |
| Biological Labeling | Fluorescent labeling of biomolecules (indirect application) | Chemical modification to conjugate with biomacromolecules |
| Coatings and Inks | Pigment component for specialty-effect coatings and inks | Dispersion grinding and stabilization |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination based on peak area comparison with certified reference standard using reversed-phase chromatography and UV detection at 400 nm. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content via iodine-sulfur dioxide reaction in methanol-based solvent. |
| Inorganic Ash | Gravimetric Analysis | Residue mass after incineration at 550 C in muffle furnace, expressed as percentage of original sample. |
| Heavy Metals (Pb, Cd, Hg, Cr) | ICP-OES | Multi-element quantification by measuring atomic emission intensities of plasma-excited elements. |
| Chloride Impurity | Potentiometric Titration | Titration with silver nitrate using silver indicator electrode; endpoint detected by potential change. |
| pH of 1% Aqueous Solution | pH Meter Measurement | Direct measurement of hydrogen ion activity in aqueous dispersion using calibrated glass electrode. |
| Water Solubility | Visual Inspection & Filtration | Assessment of complete dissolution in distilled water at 25 C followed by filtration to detect insoluble residue. |
| Organic Impurities (Related Substances) | HPLC-DAD | Separation and detection of structurally related compounds using diode array detector for spectral confirmation. |
| Bulk Density | Graduated Cylinder Method | Mass per unit volume measured by tapping a known mass into standardized cylinder and recording settled volume. |
| Particle Size Distribution | Laser Diffraction | Analysis of light scattering pattern from dispersed particles to calculate size distribution by Mie theory. |
| Colour Strength (Tinting Strength) | Reflectance Spectrophotometry | Comparison of Kubelka-Munk function values against primary standard under D65 illuminant and 10 deg observer. |
| Sulphated Ash | Gravimetric Analysis | Residue mass after incineration with sulfuric acid pretreatment at 750 C, expressed as percentage of original sample. |
| Test Item | Specification |
|---|---|
| Appearance | Yellow crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.3% |
| Heavy Metals | <=20 ppm |
| Solubility | Freely soluble in water; slightly soluble in ethanol |
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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.