China Factory Direct
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| CAS number | 920-68-3 |
| Product name | Heptamethyldisilazane |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeElectronic 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 |
|---|---|---|
| Organosilicon Materials | Intermediate for synthesizing organosilicon compounds | Reacting trimethylchlorosilane with ammonia to produce heptamethyldisilazane |
| Semiconductors | Precursor for coating materials | Used in chemical vapor deposition (CVD) processes to fabricate silicon nitride thin films |
| Polymers | Crosslinking agent or modifier | Employed as a crosslinking agent in polymer synthesis to enhance material properties |
| Pharmaceuticals | Intermediate for drug synthesis | Used in certain organic synthesis reactions to introduce silyl groups |
| Pesticides | Intermediate for pesticide synthesis | Applied as a functionalization reagent in organic synthesis |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) | Quantifies main component peak area relative to calibration curve using flame ionization detection. |
| Water Content | Karl Fischer Titration | Measures water via stoichiometric reaction between iodine and water in anhydrous methanol/pyridine medium. |
| Acid Number | Acid-Base Titration | Determines acidic impurities by titration with standardized potassium hydroxide solution in isopropanol. |
| 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 ratio of light velocity in air vs sample using critical angle measurement. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Compares sample color to platinum-cobalt standard solutions or measures absorbance at 455 nm. |
| Residue on Evaporation | Gravimetric Analysis | Weighs non-volatile residue after controlled evaporation of a known sample mass under nitrogen. |
| Chloride Content | Ion Chromatography (IC) | Separates and quantifies chloride ions using suppressed conductivity detection after aqueous extraction. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measures total heavy metal content after acid digestion and atomization in graphite furnace. |
| Volatile Impurities | Gas Chromatography-Mass Spectrometry (GC-MS) | Identifies and quantifies low-boiling impurities based on retention time and mass spectral fragmentation. |
| Viscosity at 25 C | Capillary Viscometry | Determines kinematic viscosity from flow time through calibrated capillary tube under gravity. |
| pH of Aqueous Solution | pH Meter | Measures hydrogen ion activity in a 1:10 (v/v) aqueous emulsion using calibrated glass electrode. |
| Test Item | Specification |
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| Appearance | Colorless liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.395–1.405 |
| Relative Density (20°C/25°C) | 0.755–0.765 g/cm³ |
| Odor | Characteristic silazane odor |
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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.