DIRECT VIOLET 51 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 5489-77-0 |
| Product name | DIRECT VIOLET 51 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial 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 VIOLET 51
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk DIRECT VIOLET 51 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of DIRECT VIOLET 51
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Dyeing agent for cellulose fibers | Applied via immersion dyeing or pad dyeing for direct dyeing of cellulose fibers such as cotton, linen, and viscose |
| Paper Industry | Paper coloring | Added during pulp processing or surface sizing to produce colored paper |
| Printing and Dyeing Industry | Printing dye | Used for fabric printing, applied via screen printing or transfer printing |
| Biological Staining | Cell or tissue staining (limited use) | Employed as a biological stain in laboratory settings for microscopic observation (requires adjustment per specific research conditions) |
Manufacturing Quality Control of DIRECT VIOLET 51
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Quantifies dye concentration based on absorbance at lambda-max in standardized solvent, using molar absorptivity or calibration curve. |
| Moisture Content | Karl Fischer Titration | Measures water content via stoichiometric reaction between water and iodine in a methanol-based reagent. |
| Inorganic Ash | Gravimetric Analysis (Ignition at 550 C) | Determines non-volatile inorganic residue after high-temperature combustion of sample. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneously quantifies trace metal impurities by measuring atomic emission intensities after plasma atomization. |
| Chloride Ion | Potentiometric Titration with AgNO3 | Detects chloride via precipitation titration using silver nitrate and silver indicator electrode. |
| pH of Aqueous Solution | pH Meter Measurement | Measures hydrogen ion activity in a standardized aqueous suspension or solution using calibrated glass electrode. |
| Solubility in Water | Visual Gravimetric Assessment | Evaluates complete dissolution of specified mass in defined volume of distilled water at 25 C with agitation. |
| Organic Impurities (Related Substances) | HPLC-UV | Separates and quantifies structurally related compounds using reversed-phase chromatography and UV detection. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution by analyzing angular variation in laser light scattering from dispersed particles. |
| Bulk Density | Graduated Cylinder Method (ASTM D1895) | Measures mass per unit volume of freely settled powder in a standardized cylinder. |
| Residue on Ignition | Gravimetric Analysis (Ignition at 550 C) | Same principle as inorganic ash; confirms absence of volatile organic residues after controlled heating. |
| Color Strength (Tinting Strength) | Reflectance Spectrophotometry | Compares color intensity of dye-pigmented standard substrate to reference via Kubelka-Munk transformed reflectance data. |
Technical Specifications of DIRECT VIOLET 51
| Test Item | Specification |
|---|---|
| Appearance | Purple 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 violet hue; insoluble in chloroform and ether |
| Odor | Characteristic, faint odor |
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 VIOLET 51
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of DIRECT VIOLET 51
Packaging of DIRECT VIOLET 51
Industrial DIRECT VIOLET 51 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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