Pyrocatechol Violet Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 115-41-3 |
| Product name | Pyrocatechol Violet |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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 Pyrocatechol Violet
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Pyrocatechol Violet Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Pyrocatechol Violet
| Industry | Application | Process |
|---|---|---|
| Chemical Reagents | Acid-base indicator | Used for detecting pH changes |
| Analytical Chemistry | Colorimetric reagent | Applied in colorimetric analysis for metal ion detection |
| Biochemistry | Enzyme activity assay | Used for determining the activity of certain oxidases |
| Environmental Monitoring | Water quality analysis | Applied in detecting metallic contaminants in water |
| Pharmaceutical Research | Drug analysis | Used for qualitative and quantitative analysis of drug components |
Manufacturing Quality Control of Pyrocatechol Violet
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Quantifies main component concentration via absorbance at characteristic wavelength (e.g., ~570 nm) using Beer-Lambert law. |
| Moisture Content | Karl Fischer Titration | Measures water content by coulometric or volumetric titration with iodine-based reagent in anhydrous methanol. |
| Residue on Ignition | Gravimetric Analysis | Determines inorganic ash content by high-temperature incineration followed by weighing of residual residue. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals after acid digestion by measuring atomic absorption at element-specific wavelengths. |
| Chloride Impurity | Ion Chromatography (IC) | Separates and quantifies chloride ions using anion-exchange column and conductivity detection. |
| Sulfate Impurity | Barium Sulfate Gravimetry | Precipitates sulfate as BaSO4 under controlled conditions; mass of precipitate correlates to sulfate content. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Measures hydrogen ion activity in a standardized aqueous suspension using calibrated pH electrode. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid, indicating purity and identity. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separates and quantifies residual solvents and volatile organics using flame ionization detection. |
| Related Substances | High-Performance Liquid Chromatography (HPLC-UV) | Separates and detects structurally related impurities using reversed-phase column and UV detection. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of solid particles in suspension by analyzing angular scattering pattern of laser light. |
| Bulk Density | Graduated Cylinder Method | Determines mass per unit volume of freely settled powder in a standardized cylinder under defined conditions. |
Technical Specifications of Pyrocatechol Violet
| Test Item | Specification |
|---|---|
| Appearance | Purple crystalline powder |
| Purity | >=98.5% |
| Melting Point | 204-207°C |
| Total Impurities | <=1.0% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Solubility | Soluble in ethanol, methanol, and aqueous alkali; slightly soluble in water |
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 Pyrocatechol Violet
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Pyrocatechol Violet
Packaging of Pyrocatechol Violet
Industrial Pyrocatechol Violet 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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