Pyrogallol Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 87-66-1 |
| Product name | Pyrogallol |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeElectronic GradeReagent 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 Pyrogallol
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Pyrogallol Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Pyrogallol
| Industry | Applications | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of antibiotics (e.g., chloramphenicol derivatives), antioxidants, and pharmaceutical intermediates | Used as a starting material in condensation, oxidation, and acylation reactions to construct benzimidazole and other heterocyclic frameworks |
| Cosmetics | Skin-lightening agent and antioxidant additive | Added to creams and serums to inhibit tyrosinase activity and reduce melanin synthesis; typical concentration range: 0.1–0.5% (w/w) |
| Analytical Chemistry | Colorimetric reagent for metal ions (e.g., Fe³⁺, Cu²⁺, Mn²⁺); reference standard for polyphenol quantification in biological samples | Forms stable colored complexes with metal ions in pH 7–9 buffer systems for spectrophotometric determination; also used for calibration in the Folin-Ciocalteu assay |
| Photographic Materials | Component of black-and-white film developing solutions (used synergistically with hydroquinone) | Acts as an electron donor to accelerate silver salt reduction; forms a superadditive developing system with metol/hydroquinone in alkaline developer solutions (pH 10–12) |
| Agriculture | Reagent for plant growth regulator research and intermediate for pesticide synthesis | Applied in synthesizing analogues of phenoxyalkanoic acid herbicides; used in laboratory studies to induce oxidative stress and evaluate crop abiotic stress tolerance |
| Polymers | Accelerator for epoxy resin curing and antidegradant for natural rubber | Activates epoxy groups during thermal curing; enhances crosslink density in combination with amines; also delays rubber aging by scavenging free radicals |
Manufacturing Quality Control of Pyrogallol
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Content Assay | High-Performance Liquid Chromatography (HPLC) | Utilizes a C18 reversed-phase chromatographic column with a UV detector (typically at 270–280 nm), using methanol-water or buffered solutions as the mobile phase to quantitatively analyze pyrogallol, offering high sensitivity and excellent reproducibility. |
| Appearance and Color | Visual Inspection | Observation of sample color and physical state under natural light or standard illumination; pyrogallol should appear as white to light gray crystalline powder with no visible discoloration or impurities. |
| Melting Point | Melting Point Determination (Capillary Method) | The melting point of the sample is measured using a melting point apparatus; pyrogallol has a melting point of approximately 126–131°C, used to assess purity and substance consistency. |
| Water Content | Karl Fischer Titration | Utilizes Karl Fischer reagent to titrate moisture in the sample, enabling accurate determination of water content; suitable for trace moisture analysis to ensure product stability. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | HPLC is used to detect possible oxidation products (e.g., derivatives of pyrocatechol) or other organic impurities in pyrogallol, evaluating purity and storage stability. |
| Heavy Metals | Sulfide Colorimetric Method or Atomic Absorption Spectroscopy | After sample preparation according to pharmacopoeial methods, lead, arsenic, and other heavy metal residues are determined via colorimetric or atomic absorption spectroscopy to ensure compliance with safety limits. |
| Solution Clarity and Color | Spectrophotometry / Visual Color Comparison | The sample is dissolved at a specified concentration, and its clarity and color intensity are visually assessed or measured by absorbance at a specific wavelength to control impurity levels in solution. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Oven Drying Method | The sample is heated at a specified temperature for a defined period, and the mass difference before and after drying is measured to calculate the total volatile components, reflecting the sample's degree of dryness. |
| Residue on Ignition | Residue on Ignition Test | The mass of inorganic residues remaining after high-temperature incineration of the sample is measured to assess inorganic impurity content; typically, the residue limit should be below 0.1%. |
Technical Specifications of Pyrogallol
| Test Item | Specification |
|---|---|
| Appearance | White to light brown crystalline powder |
| Purity | >=98.5% |
| Melting Point | 131.0 - 134.0 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=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 Pyrogallol
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NMR Spectra of Pyrogallol
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Industrial Pyrogallol 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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