3,5-DIMETHYLPHENYL ISOCYANATE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 54132-75-1 |
| Product name | 3,5-DIMETHYLPHENYL ISOCYANATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeMaterial GradeSpecialty 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 3,5-DIMETHYLPHENYL ISOCYANATE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3,5-DIMETHYLPHENYL ISOCYANATE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3,5-DIMETHYLPHENYL ISOCYANATE
| Industry | Application | Process |
|---|---|---|
| Coatings | Synthesis of polyurethane resins | Reacted with polyols to produce polyurethane resins |
| Adhesives | Monomer or intermediate for polyurethane adhesives | Combined with other isocyanate monomers and subjected to polymerization |
| Foams | Production of polyurethane foams | Reacted with polyols and catalysts to form foam structures |
| Others | Synthesis of specialty functional materials, such as elastomers and fibers | Reacted with other monomers or catalysts to produce high-performance materials |
Manufacturing Quality Control of 3,5-DIMETHYLPHENYL ISOCYANATE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantitative determination based on peak area comparison against a certified reference standard using a non-polar capillary column. |
| Water Content | Karl Fischer Titration (Coulometric) | Electrochemical titration where iodine generated in situ reacts stoichiometrically with water; endpoint detected amperometrically. |
| Acid Number | Acid-Base Titration (NaOH in methanol) | Neutralization of acidic impurities (e.g., residual HCl, carboxylic acids) with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement at 455 nm | Measurement of yellowness intensity by comparing sample absorbance at 455 nm to APHA color scale standards. |
| Residue on Ignition | Gravimetric Analysis | Determination of non-volatile inorganic residue after controlled high-temperature ashing and weighing of the residue. |
| Chloride Content | Ion Chromatography (IC) or Potentiometric Titration with AgNO3 | Separation and quantification of chloride ions via ion exchange chromatography or direct titration with silver nitrate using a silver electrode. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of total heavy metals after acid digestion by measuring absorbance of ground-state atoms at element-specific wavelengths. |
| Residual Solvents (e.g., toluene, xylene) | Gas Chromatography (GC) with FID or MS detection | Separation and quantification of volatile organic solvents using headspace or direct injection GC with calibrated external standards. |
| Free Isocyanate Content | Dibutylamine Back-Titration | Reaction of isocyanate groups with excess dibutylamine, followed by titration of unreacted amine with HCl to determine NCO content. |
| Specific Gravity | Digital Density Meter (Oscillating U-tube) | Determination of density from the resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index | Refractometry (Abbe type) | Measurement of light refraction angle at air-sample interface to determine refractive index at specified temperature and wavelength (589 nm). |
| Appearance | Visual Inspection in Clear Glass Container | Assessment of physical state, clarity, and presence of suspended particles or phase separation under controlled lighting conditions. |
Technical Specifications of 3,5-DIMETHYLPHENYL ISOCYANATE
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.545–1.555 |
| Relative Density (20°C/25°C) | 1.06–1.08 g/cm³ |
| Odor | Characteristic pungent 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 3,5-DIMETHYLPHENYL ISOCYANATE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3,5-DIMETHYLPHENYL ISOCYANATE
Packaging of 3,5-DIMETHYLPHENYL ISOCYANATE
Industrial 3,5-DIMETHYLPHENYL ISOCYANATE 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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