ACID YELLOW 7 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 2391-30-2 |
| Product name | ACID YELLOW 7 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeReagent Grade |
| Packaging | 25KG/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 YELLOW 7
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk ACID YELLOW 7 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of ACID YELLOW 7
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Dyeing protein fibers such as wool and silk | Applied in immersion dyeing or pad dyeing processes, typically under mildly acidic conditions |
| Leather Industry | Leather dyeing | Used for dyeing light leathers and furs, achieving uniform coloration via immersion dyeing |
| Paper Industry | Paper dyeing | Used in the production of colored paper by addition to the pulp |
| Printing & Dyeing Industry | Acid dye printing | Applied in fabric printing, in combination with other auxiliaries for pattern formation |
| Analytical Chemistry | pH indicator (secondary application) | Exhibits color change within a specific pH range, used for staining or detection support |
Manufacturing Quality Control of ACID YELLOW 7
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Quantifies main component concentration using absorbance at characteristic wavelength (e.g., ~410 nm) calibrated against certified reference standard. |
| Moisture Content | Karl Fischer Titration | Measures water content via stoichiometric reaction between water and iodine in methanol/pyridine medium. |
| Inorganic Ash | Gravimetric Analysis (Ignition at 550 C) | Determines non-volatile inorganic residue after high-temperature combustion and weighing. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneously quantifies trace heavy metals by measuring element-specific emission intensities from plasma-excited atoms. |
| Chloride Content | Potentiometric Titration with AgNO3 | Detects chloride ions via precipitation titration using silver nitrate and silver indicator electrode. |
| pH of Aqueous Solution | pH Meter Measurement | Measures hydrogen ion activity in a standardized 1% (w/v) aqueous solution at 25 C. |
| Water Solubility | Visual Dissolution Test | Evaluates complete dissolution in distilled water at 20 C with defined concentration and agitation time. |
| Organic Impurities (Related Substances) | HPLC-UV | Separates and quantifies structurally related impurities using reversed-phase chromatography and UV detection. |
| Residue on Ignition | Gravimetric Analysis (Ignition at 550 C) | Same as Inorganic Ash; measures non-volatile residue after controlled ignition. |
| Bulk Density | ASTM D1895 Method A | Determines mass per unit volume of freely settled powder using standardized cylinder and tapping procedure. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution by analyzing angular scattering pattern of laser beam passing through dispersed sample. |
| Color Strength (Tinting Strength) | Comparative Visual or Instrumental Matching | Compares color intensity and hue of test sample vs. reference standard in standardized dyeing substrate or solution. |
Technical Specifications of ACID YELLOW 7
| Test Item | Specification |
|---|---|
| Appearance | Orange crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 230-235°C |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Solubility | Soluble in water and ethanol |
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 YELLOW 7
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of ACID YELLOW 7
Industrial ACID YELLOW 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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