621-76-1 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 621-76-1 |
| Product name | 621-76-1 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty GradeElectronic GradeMaterial Grade |
| Packaging | 25L/drum |
| 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 621-76-1
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 621-76-1 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 621-76-1
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Key intermediate for synthesizing cephalosporin antibiotics (e.g., cefoperazone, ceftriaxone) | Used as a protecting group or activating agent in condensation reactions to construct the side chain of the β-lactam ring |
| Pesticides | Intermediate for synthesizing insecticides (e.g., imidacloprid, acetamiprid) and other neonicotinoid compounds | Employed to prepare N-nitroimine structures or as an alkylating agent to introduce propoxy groups |
| Dyes & Pigments | Processing aid for synthesizing organic dyes (e.g., triarylmethane and anthraquinone dyes) | Enhances reaction selectivity and product purity in transesterification or salt formation reactions |
| Liquid Crystal Materials | Raw material for synthesizing liquid crystal monomers (e.g., propoxy-substituted biphenyl or cyclohexylbenzene derivatives) | Introduces propoxy side chains via nucleophilic substitution or catalytic dehydrogenative coupling to modulate mesomorphic behavior |
Manufacturing Quality Control of 621-76-1
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) | Quantifies main component using retention time and peak area against calibrated standard. |
| Water Content | Karl Fischer Titration | Measures water via stoichiometric reaction between iodine, sulfur dioxide, and water in pyridine/methanol medium. |
| Acidity (as HCOOH) | Acid-Base Titration | Determines acidic impurities by titration with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Compares sample color to platinum-cobalt standard solutions or measures absorbance at 455 nm. |
| Density at 20 C | Digital Density Meter | Measures mass per unit volume using oscillating U-tube principle with temperature control. |
| Refractive Index at 20 C | Refractometry | Determines refractive index by measuring angle of light refraction at air-sample interface. |
| Residue on Evaporation | Gravimetric Analysis | Weighs non-volatile residue after controlled evaporation of a known sample mass under specified conditions. |
| Chloride Content | Ion Chromatography (IC) | Separates and quantifies chloride ions using anion-exchange column and conductivity detection. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measures total heavy metals after acid digestion by atomic absorption at characteristic wavelength. |
| Non-Volatile Matter | Gravimetric Analysis | Determines insoluble residue after filtration and drying of sample dissolved in suitable solvent. |
| Distillation Range | Simple Distillation with Thermometry | Measures initial and final boiling points under controlled atmospheric pressure and heating rate. |
| Aldehyde Impurities | Gas Chromatography-Mass Spectrometry (GC-MS) | Identifies and quantifies low-level aldehyde impurities via retention time and mass spectral fragmentation patterns. |
Technical Specifications of 621-76-1
| Test Item | Specification |
|---|---|
| Appearance | Clear, colorless liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.402 - 1.408 |
| Relative Density (20°C/25°C) | 0.875 - 0.885 g/cm³ |
| Acid Value (mg KOH/g) | <=0.5 |
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 621-76-1
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 621-76-1
Packaging of 621-76-1
Industrial 621-76-1 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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