China Factory Direct
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| CAS number | 541-16-2 |
| Product name | Di-tert-Butyl malonate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent GradeCosmetic GradeFood Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of pharmaceutical intermediates | Used as an acylating agent in organic synthesis reactions |
| Agrochemicals | Synthesis of herbicide or insecticide intermediates | Applied to construct ester-containing active agrochemical molecules |
| Materials Science | Synthesis of polymeric materials | Employed as a monomer or crosslinking agent in polymerization reactions |
| Fragrances | Synthesis of fragrance compounds | Used in the synthesis of ester-based fragrance ingredients |
| Chemical Research | Organic synthesis experiments | Served as a model compound for ester derivatives in teaching and research |
| Test Item | Common Test Method | Method Summary |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state, and clarity under natural or standard lighting. It should be a clear, colorless to pale yellow transparent liquid with no visible impurities. |
| Identification | Fourier Transform Infrared Spectroscopy (FT-IR) | Record the infrared absorption spectrum of the sample using an FT-IR spectrometer and compare it with the reference spectrum to confirm the presence of characteristic functional groups (e.g., ester C=O, C–O). |
| Assay | Gas Chromatography (GC) | Perform quantitative analysis using a capillary GC column and FID detector. The content of di-tert-butyl malonate is calculated by internal or external standard method, typically requiring ≥98.0%. |
| Water Content | Karl Fischer Titration | Determine water content based on the quantitative reaction between water in the sample and Karl Fischer reagent, using either coulometric or volumetric titration. Generally controlled at ≤0.1%. |
| Acid Value | Acid-Base Titration | Titrate free acids in the sample with standardized potassium hydroxide in ethanol solution using phenolphthalein as indicator. Acid value (mg KOH/g) is calculated to assess the degree of hydrolysis or oxidation. |
| Residual Solvents | Headspace Gas Chromatography (HS-GC) | Use headspace sampling combined with GC-FID to detect residual organic solvents (e.g., toluene, dichloromethane) from manufacturing processes, ensuring compliance with ICH Q3C limits. |
| Purity / Related Substances | Gas Chromatography (GC) or High-Performance Liquid Chromatography (HPLC) | Separate impurities in the sample using GC or HPLC, and calculate total and individual impurity levels by area normalization or correction factor methods. Must meet quality specifications (e.g., individual impurity ≤0.5%, total impurities ≤1.0%). |
| Density | Densimeter or Pycnometer Method | Measure the density of the sample at a specified temperature (e.g., 20°C), used as a physical constant for identification and quality control. |
| Refractive Index | Refractometry | Determine the refractive index (n20D) using an Abbe refractometer at standard temperature to verify consistency of the substance. |
| Test Item | Specification |
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| Appearance | Colorless to light yellow, clear liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Odor | Characteristic ester-like odor |
| Refractive Index (n20/D) | 1.425–1.435 |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.