1,4-Dihydroxyanthraquinone Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 81-64-1 |
| Product name | 1,4-Dihydroxyanthraquinone |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent GradeIndustrial 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 1,4-Dihydroxyanthraquinone
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1,4-Dihydroxyanthraquinone Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1,4-Dihydroxyanthraquinone
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Dye Intermediate | Used in the synthesis of anthraquinone dyes |
| Pharmaceutical Industry | Pharmaceutical Intermediate | Used in the synthesis of laxatives such as sennosides |
| Chemical Industry | Organic Synthesis Feedstock | Used to prepare other anthraquinone derivatives |
| Printing Industry | Pigment Intermediate | Applied in the production of Pigment Violet, Pigment Brown, etc. |
| Research | Laboratory Reagent | Used in chemical research and analysis |
Manufacturing Quality Control of 1,4-Dihydroxyanthraquinone
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Identification Test | Ultraviolet-Visible Spectrophotometry (UV-Vis) | Utilizes the characteristic absorption peaks of 1,4-dihydroxyanthraquinone at specific wavelengths (e.g., approximately 250–290 nm and 480–520 nm) for qualitative identification; may be supplemented by color reactions (e.g., turning red with alkaline solution). |
| Assay | High-Performance Liquid Chromatography (HPLC) | Employs a reversed-phase C18 column with a mobile phase of methanol-water or acetonitrile-water, detected by a UV detector (typically at 254 nm or near 480 nm); accurate quantification of the main component is performed using external standard or internal standard methods. |
| Related Substances (Impurities) Check | High-Performance Liquid Chromatography (HPLC) | Similar to assay conditions, but optimized with gradient elution to achieve good separation between the main peak and potential impurities (e.g., unreacted starting materials, oxidation or degradation products); impurity content is calculated using area normalization or the main component self-reference method with correction factors. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Atmospheric Drying Method | Sample is dried at 105°C to constant weight, and the mass loss is measured to evaluate moisture and volatile content, complying with pharmacopoeial or corporate standards (typically ≤1.0%). |
| Residue on Ignition | High-Temperature Ashing Method | After carbonization, the sample is incinerated in a furnace at 700–800°C, and the mass of residual inorganic matter is weighed to control total inorganic impurities (typically ≤0.1%). |
| Heavy Metals | Thioacetamide Method (Colorimetric) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Performs colorimetric detection or quantitative determination of heavy metal elements (e.g., lead, cadmium, mercury, arsenic) according to the general methods in the Chinese Pharmacopoeia; ensures compliance with safety limits (e.g., ≤20 ppm). |
| Melting Point | Capillary Melting Point Determination | The melting temperature range of the sample is measured using a melting point apparatus; the typical melting point of 1,4-dihydroxyanthraquinone is 310–315°C (with decomposition), used to assess purity and crystalline form consistency. |
Technical Specifications of 1,4-Dihydroxyanthraquinone
| Test Item | Specification |
|---|---|
| Appearance | Orange crystalline solid |
| Purity | >=98.5% (by HPLC) |
| Melting Point | 273–277°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
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 1,4-Dihydroxyanthraquinone
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1,4-Dihydroxyanthraquinone
Packaging of 1,4-Dihydroxyanthraquinone
Industrial 1,4-Dihydroxyanthraquinone 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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