1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 19735-89-8 |
| Product name | 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty GradeReagent 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 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis intermediate for the antipyretic and analgesic drug metamizole | Diazotized with N-methylaniline and sodium nitrite under acidic conditions, followed by condensation and cyclization with acetone, then reduction and methylation to produce metamizole |
| Dyes | Color-developing agent and auxochrome for azo dyes and triarylmethane dyes | Acts as a coupling component reacting with diazonium salts to form azo dyes of specific hues; also used to adjust dye pH sensitivity and hue stability |
| Analytical Chemistry | Colorimetric reagent for metal ions (e.g., Fe³⁺, Cu²⁺, Ni²⁺) in spectrophotometric analysis | Forms stable colored complexes with target metal ions in weakly acidic media, enabling concentration determination via spectrophotometry |
| Pesticides | Structural building block in certain insecticides and plant growth regulators | Serves as a heterocyclic core in constructing biologically active molecular frameworks, e.g., as a synthetic precursor for selected pyrazole derivatives |
Manufacturing Quality Control of 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by comparison of peak area against a certified reference standard using reversed-phase chromatography and UV detection at 254 nm. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient elution and UV detection; identification via retention time matching with reference standards. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection to quantify volatile organic solvents based on calibrated response factors. |
| Water Content | Karl Fischer Titration | Electrochemical titration using iodine generated in situ to determine water content based on stoichiometric reaction with Karl Fischer reagent. |
| Heavy Metals | ICP-OES | Multi-element quantification after acid digestion by measuring atomic emission intensities at element-specific wavelengths. |
| Chloride Impurity | Ion Chromatography | Separation of chloride anions on an anion-exchange column with suppressed conductivity detection. |
| Sulfated Ash | Gravimetric Analysis | Incineration at 700-800 C followed by weighing of residual inorganic salts after sulfuric acid treatment. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, measured using calibrated capillary tube method. |
| Appearance | Visual Inspection | Assessment of physical state, color, and clarity against established reference standards under controlled lighting conditions. |
| pH of Aqueous Solution | pH Meter | Measurement of hydrogen ion activity in a saturated aqueous suspension using a calibrated glass electrode system. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity patterns to calculate size distribution based on Mie theory. |
| Bulk Density | Graduated Cylinder Method | Mass per unit volume measured by gently pouring sample into a calibrated cylinder and recording settled volume. |
Technical Specifications of 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 148–152°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Identification (NMR) | Conforms to reference spectrum |
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 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
Safety Information of 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
Industrial 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one 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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