56-33-7 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 56-33-7 |
| Product name | 56-33-7 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial 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) |
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Documents We Provide for 56-33-7
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 56-33-7 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 56-33-7
| Industry | Application | Process |
|---|---|---|
| Organosilicon Materials | Capping agent for silicone oils and silicone rubbers | Added in the late stage of polymerization to control molecular weight and cap terminal groups via cleavage and recombination of Si–O–Si bonds |
| Organosilicon Materials | Crosslinking modifier for organosilicon resins | Used as an active diluent or chain terminator to regulate crosslink density and curing performance |
| Pharmaceutical Intermediates | Structural building block for synthesizing silicon-containing drug carriers or prodrugs | Introduced into phenyl-methyl siloxane frameworks via hydrolysis/condensation to enhance lipophilicity and metabolic stability |
| Electronic Chemicals | Rheology modifier for LED-encapsulating silicone gels | Reduced system viscosity and suppressed bubble formation at low addition levels (0.1–0.5 wt%) |
| Coatings and Inks | Adhesion promoter for high-performance heat-resistant coatings | Reacted with surface hydroxyl groups on metal oxides to form Si–O–M bonds, thereby enhancing interfacial adhesion |
Manufacturing Quality Control of 56-33-7
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies main component by retention time and peak area comparison against certified reference standard. |
| Water Content | Karl Fischer Titration | Measures water via stoichiometric reaction between water, iodine, sulfur dioxide, and base in methanol medium. |
| Acid Number | Acid-Base Titration with NaOH | Determines acidic impurities by titration with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Color (APHA) | Visual Comparison or Spectrophotometry at 455 nm | Evaluates yellowness by matching sample color to APHA platinum-cobalt standard scale. |
| Density at 20 C | Digital Density Meter (Oscillating U-tube) | Measures mass per unit volume based on resonant frequency shift of vibrating U-tube filled with sample. |
| Refractive Index at 20 C | Refractometry (Abbe type) | Determines ratio of light velocity in air vs. sample using critical angle measurement of total internal reflection. |
| Residue on Evaporation | Gravimetric Analysis (Weight Loss on Drying) | Quantifies non-volatile residue after controlled evaporation under nitrogen and drying to constant weight. |
| Chloride Content | Ion Chromatography (IC) or Potentiometric Titration | Separates and quantifies chloride ions via conductivity detection (IC) or silver nitrate titration with indicator electrode. |
| Heavy Metals (as Pb) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Atomizes and excites sample in plasma; measures characteristic emission intensities of metal elements. |
| Volatile Impurities | Headspace Gas Chromatography-Mass Spectrometry (HS-GC-MS) | Extracts and separates volatile compounds from sample headspace, identifies and quantifies via mass spectral library matching. |
| Viscosity at 25 C | Capillary Viscometry (e.g., Ubbelohde) | Determines kinematic viscosity by measuring flow time of fixed volume through calibrated capillary under gravity. |
| Non-Volatile Matter | Gravimetric Analysis (Filterable Residue) | Measures insoluble particulates retained on specified pore-size membrane filter after solvent dilution and filtration. |
Technical Specifications of 56-33-7
| Test Item | Specification |
|---|---|
| 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) | 1.530–1.540 |
| Relative Density (20°C/25°C) | 0.970–0.990 g/cm³ |
| Odor | Characteristic mild odor |
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 56-33-7
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 56-33-7
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Industrial 56-33-7 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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