Solvent black 7 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 8005-02-5 |
| Product name | Solvent black 7 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeElectronic GradeCosmetic GradeFood 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 Solvent black 7
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Solvent black 7 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Solvent black 7
| Industry | Application | Process |
|---|---|---|
| Textiles | Used for dyeing cotton, linen, and viscose fibers; black dye | Dyeing |
| Inks | Manufacture of black printing inks and writing inks | Ink formulation |
| Coatings | Black pigment for coloring wood and metal surfaces | Coating preparation |
| Plastics | Colorant for plastics such as polyvinyl chloride (PVC) and polyethylene (PE) | Plastic processing |
| Rubber | Black colorant for tires and rubber products | Rubber compounding |
| Leather | Leather finishing and dyeing | Leather processing |
| Electronics | Marking coatings for certain electronic components (e.g., resistors) | Electronic component manufacturing |
| Cosmetics | Black pigment in a limited number of hair dyes (subject to safety compliance) | Cosmetic formulation |
Manufacturing Quality Control of Solvent black 7
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (purity) | UV-Vis Spectrophotometry | Quantifies benzidine black concentration via absorbance at characteristic wavelength using calibrated standard curve. |
| Moisture Content | Karl Fischer Titration | Measures water content by coulometric or volumetric titration with iodine-based reagent. |
| Ash Content | Gravimetric Analysis (Incineration) | Determines inorganic residue after high-temperature combustion and weighing of residual ash. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneously quantifies trace heavy metals after acid digestion using plasma-excited atomic emission. |
| Residual Solvents | Gas Chromatography (GC-FID) | Separates and quantifies volatile organic solvents based on retention time and flame ionization response. |
| pH of Solution (1% w/v in toluene) | Potentiometric pH Measurement | Measures hydrogen ion activity in oil-phase solution using non-aqueous pH electrode and compatible reference system. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution of dispersed particles in carrier oil by analyzing angular scattering pattern of laser beam. |
| Viscosity (40 C) | Capillary Viscometry | Measures kinematic viscosity by timing flow of sample through calibrated capillary tube under gravity. |
| Sulfated Ash | Gravimetric Analysis (Sulfuric Acid Ashing) | Quantifies metallic impurities as sulfate salts after controlled sulfuric acid treatment and incineration. |
| Color Value (Gardner Scale) | Visual Comparison or Spectrocolorimetry | Evaluates color intensity against standardized Gardner color scale using visual matching or spectral reflectance. |
| Volatile Matter | Thermogravimetric Analysis (TGA) | Measures mass loss upon controlled heating to determine volatile components up to specified temperature. |
| Specific Gravity (25/25 C) | Pycnometry | Determines density ratio relative to water by precise mass/volume measurement using calibrated pycnometer. |
Technical Specifications of Solvent black 7
| Test Item | Specification |
|---|---|
| Appearance | Black viscous liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.3% |
| Color (APHA/Pt-Co) | >=500 |
| Odor | Characteristic aromatic 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 Solvent black 7
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Solvent black 7
Industrial Solvent black 7 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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