BASIC YELLOW 57 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 68391-31-1 |
| Product name | BASIC YELLOW 57 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty 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 BASIC YELLOW 57
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk BASIC YELLOW 57 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of BASIC YELLOW 57
| Industry | Application | Process |
|---|---|---|
| Textile Dyeing and Printing | Reactive dyes for dyeing cellulose fibers such as cotton and viscose | Exhaust and pad-dyeing processes; fixation under mildly alkaline conditions (pH 10–11), forming covalent bonds with cellulose hydroxyl groups via nucleophilic substitution |
| Papermaking | Colorant for direct paper dyeing | Added to the pulp slurry; adsorbs and fixes onto fiber surfaces under neutral to mildly alkaline conditions (pH 6–8) |
| Leather | Dye for fur dyeing, suitable for light-colored furs such as sheepskin and rabbit skin | Exhaust dyeing at pH 4–6 and 35–45°C, followed by rinsing and after-treatment |
Manufacturing Quality Control of BASIC YELLOW 57
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at characteristic wavelength, calibrated against certified reference standard. |
| Related Substances | HPLC-DAD | Separation and identification of structurally related impurities using HPLC with diode array detection and spectral comparison. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection for quantification of volatile organic solvents per ICH Q3C. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to determine trace water content in the sample. |
| Heavy Metals | ICP-OES | Multi-element quantification of toxic metals (e.g., Pb, Cd, Hg, As) after acid digestion and plasma emission spectroscopy. |
| Chloride Content | Potentiometric Titration | Titration with silver nitrate using silver indicator electrode to determine chloride ion concentration from hydrochloride salt. |
| pH of Aqueous Solution | pH Meter Measurement | Direct measurement of pH in a standardized aqueous suspension or solution using calibrated pH electrode. |
| Loss on Drying | Gravimetric Analysis | Weight loss measured after drying under controlled temperature and vacuum, indicating volatile and moisture content. |
| Particle Size Distribution | Laser Diffraction | Analysis of dispersed sample in liquid medium using light scattering to determine size distribution profile. |
| Bulk Density | Tap Density Measurement | Determination of mass per unit volume after standardized tapping of powder in calibrated cylinder. |
| Microbial Contamination | Membrane Filtration | Enumeration of aerobic microorganisms by filtration, membrane transfer to agar media, and colony counting after incubation. |
| Identity Confirmation | FTIR Spectroscopy | Comparison of sample infrared absorption spectrum with reference standard to verify functional group and molecular structure. |
Technical Specifications of BASIC YELLOW 57
| Test Item | Specification |
|---|---|
| Appearance | Off-white to light yellow crystalline powder |
| Purity | >=98.5% (HPLC) |
| Total Impurities | <=1.5% (HPLC) |
| Single Impurity | <=0.5% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 192–196°C |
| Residue on Ignition | <=0.3% |
| 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 BASIC YELLOW 57
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of BASIC YELLOW 57
Industrial BASIC YELLOW 57 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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