Acid Brown 4 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 5858-51-5 |
| Product name | Acid Brown 4 |
| 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 Acid Brown 4
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Acid Brown 4 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Acid Brown 4
| Industry | Application | Process |
|---|---|---|
| Textiles | Dyeing agent | Applied to wool, silk, and nylon fibers via acid dyeing; introduced through immersion or pad dyeing, followed by fixation to achieve stable coloration |
| Leather | Leather coloring | Applied as an aqueous solution onto leather surfaces via spraying or immersion in post-tanning operations, forming a uniform brown surface color layer |
| Printing | Ink coloring | Used as a component in inks for paper or textile printing; applied via gravure or screen printing to achieve patterned coloration |
| Paper | Paper dyeing | Used in the production of colored paper; incorporated into pulp or applied via surface coating to achieve uniform brown coloration |
Manufacturing Quality Control of Acid Brown 4
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Quantitative determination based on absorbance at characteristic wavelength using Beer-Lambert law with reference standard. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content via iodine-sulfur dioxide reaction in anhydrous methanol medium. |
| Ash Content | Gravimetric Analysis | Residue mass after high-temperature incineration at 550-600 C, expressed as percentage of original sample. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Multi-element quantification by measuring atomic emission intensities of plasma-excited elements. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Titration using silver nitrate and silver indicator electrode; endpoint detected by potential change. |
| Sulfate Impurity | Gravimetric Analysis with BaCl2 | Precipitation as barium sulfate followed by filtration, drying, and weighing of precipitate. |
| pH of Aqueous Solution | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a 1% w/v aqueous solution at 25 C. |
| Water Solubility | Visual Dissolution Test | Qualitative assessment of complete dissolution in distilled water at specified temperature and concentration. |
| Organic Volatile Impurities | GC-FID | Separation and quantification of volatile organic impurities using gas chromatography with flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Measurement of scattered light intensity from dispersed particles to determine size distribution. |
| Bulk Density | ASTM D1895 | Mass per unit volume of freely settled powder measured in a standardized graduated cylinder. |
| Color Strength (Relative) | UV-Vis Spectrophotometry | Comparison of absorbance ratio between sample and primary standard under identical conditions. |
Technical Specifications of Acid Brown 4
| Test Item | Specification |
|---|---|
| Appearance | Brown 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 and ethanol |
| Color (APHA/Pt-Co) | Not applicable |
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 Acid Brown 4
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Acid Brown 4
Industrial Acid Brown 4 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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