China Factory Direct
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| CAS number | 81-77-6 |
| Product name | Vat Blue 4 |
| 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) |
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 |
|---|---|---|
| Inks | Provides vibrant blue shade in offset, gravure, and flexographic inks | Formulated into solvent-based or water-based inks by grinding and dispersing the pigment into the vehicle |
| Coatings | Used for coloring industrial coatings, automotive coatings, and powder coatings | High-speed dispersion in resin systems, followed by grinding to produce color pastes or direct incorporation into coating bases |
| Plastics | Used for coloring plastic products such as polyolefins (e.g., PP, PE), ABS, and PS | Premixed with polymer granules prior to extrusion pelletizing or injection molding; thermally stable up to typical processing temperatures (≤300°C) |
| Textiles | Used for solution dyeing or dyeing of polyester and polyester-blend fabrics | Applied via high-temperature, high-pressure dyeing or carrier dyeing; also suitable for spun-dyeing (solution dyeing) |
| Artist Pigments | Provides stable blue hue in premium artist paints (e.g., oil and acrylic paints) | Ground to specified fineness, then mixed with drying oils or acrylic emulsions to produce finished paint |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Purity (main component) | HPLC-UV | Quantifies pigment content by separation on a reversed-phase column and UV absorbance detection at characteristic wavelength. |
| Moisture Content | Karl Fischer Titration | Measures water via coulometric or volumetric titration using iodine-based reagent reacting stoichiometrically with water. |
| Ash Content | Gravimetric Analysis (Incineration) | Determines inorganic residue after high-temperature combustion and weighing of residual ash. |
| Particle Size Distribution | Laser Diffraction | Measures scattered light intensity patterns from dispersed particles to calculate size distribution based on Mie theory. |
| Color Strength (Tinting Strength) | Reflectance Spectrophotometry | Compares reflectance spectra of standardized pigment dispersions against reference standard to calculate relative color strength. |
| pH of Aqueous Extract | Potentiometric pH Measurement | Determines acidity/alkalinity of water extract using calibrated glass electrode and pH meter. |
| Heavy Metals (Pb, Cd, Hg, Cr) | ICP-OES | Quantifies elemental metals after acid digestion by measuring element-specific emission intensities in argon plasma. |
| Water Soluble Salts | Conductivity Measurement | Estimates soluble ionic impurities by measuring electrical conductivity of aqueous extract. |
| Organic Volatile Impurities | GC-MS | Identifies and quantifies residual solvents or volatile organics using gas chromatographic separation and mass spectral detection. |
| Bulk Density | ASTM D1895 (Method A) | Measures mass per unit volume of freely settled powder using standardized cylinder and funnel apparatus. |
| Heat Stability | Thermogravimetric Analysis (TGA) | Evaluates weight loss profile under controlled heating to assess decomposition onset and thermal stability. |
| Lightfastness | Xenon Arc Weatherometer (ISO 105-B02) | Assesses color change after controlled exposure to xenon lamp radiation simulating daylight and humidity. |
| Test Item | Specification |
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| Appearance | Blue solid |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Melting Point | 260–265 °C |
| Solubility | Insoluble in water; soluble in concentrated sulfuric acid |
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| 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.