DIRECT YELLOW 50 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 3214-47-9 |
| Product name | DIRECT YELLOW 50 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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) |
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Documents We Provide for DIRECT YELLOW 50
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk DIRECT YELLOW 50 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of DIRECT YELLOW 50
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Used for dyeing cotton, linen, viscose, and other fibers | High-temperature dyeing process; suitable for immersion dyeing, pad dyeing, and similar methods |
| Dyeing and Printing Industry | Applied as a direct dye for coloring paper and leather | Standard dyeing and printing process; requires a fixing agent to enhance color fastness |
| Plastics Industry | Used for coloring certain plastic products | Mixed with plastic raw materials and processed via heat molding |
| Coatings Industry | Employed as a colorant in water-based coatings | Dispersed into the coating base and subjected to grinding prior to use |
| Stationery Manufacturing | Used in the production of inks, colored pencils, and other stationery products | Processed after mixing with solvents or carriers |
Manufacturing Quality Control of DIRECT YELLOW 50
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component by retention time and UV absorbance against certified reference standard. |
| Moisture Content | Karl Fischer Titration | Measures water content via stoichiometric reaction between iodine and water in anhydrous medium. |
| Ash Content | Gravimetric Analysis | Determines inorganic residue after high-temperature incineration at 550-600 C. |
| Heavy Metals (as Pb) | AAS | Quantifies total heavy metals by atomic absorption spectroscopy after acid digestion. |
| Chloride Content | Potentiometric Titration | Measures chloride ions using silver nitrate titrant with silver indicator electrode. |
| pH of Aqueous Solution | pH Meter Measurement | Determines acidity/basicity of 1% w/v aqueous dispersion using calibrated pH electrode. |
| Solubility in Water | Visual Inspection | Evaluates complete dissolution of specified amount in distilled water at 25 C with agitation. |
| Substance Not Precipitated by Alcohol | Gravimetric Filtration | Measures insoluble fraction after adding ethanol and filtering under standardized conditions. |
| Color Strength (Relative) | UV-Vis Spectrophotometry | Compares absorbance ratio of sample vs. primary standard at lambda-max in specified solvent. |
| Organic Impurities (Related Substances) | HPLC-DAD | Detects and quantifies structurally related compounds using diode-array detection. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution based on angular variation of scattered laser light. |
| Bulk Density | Graduated Cylinder Method | Determines mass per unit volume by tapping a known mass into a calibrated cylinder. |
Technical Specifications of DIRECT YELLOW 50
| Test Item | Specification |
|---|---|
| Appearance | Yellow crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Solubility | Soluble in water with yellow to orange hue; clear, no undissolved particles |
| Color (APHA/Pt-Co) | <=100 APHA (1% aqueous solution) |
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 DIRECT YELLOW 50
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of DIRECT YELLOW 50
Packaging of DIRECT YELLOW 50
Industrial DIRECT YELLOW 50 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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