p-Tolyl isocyanate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 622-58-2 |
| Product name | p-Tolyl isocyanate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial 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 p-Tolyl isocyanate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk p-Tolyl isocyanate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of p-Tolyl isocyanate
| Industry | Application | Process |
|---|---|---|
| Automotive | Manufacturing seat foam and instrument panels | Used in polymerization reactions |
| Construction | Spray-applied polyurea and thermal insulation materials | Used in polymerization reactions |
| Footwear | Production of shoe soles | Used in polymerization reactions |
| Industrial Manufacturing | Production of elastomers and sealing materials | Used in polymerization reactions |
| Coatings | Formulation of high-performance coatings | Used in polymerization reactions |
| Adhesives | Production of high-strength adhesives | Used in polymerization reactions |
| Textiles | Used as finishing agents | Applied in modification processes |
| Intermediates | Synthesis of other chemical products | Produced via intermediate synthesis processes |
Manufacturing Quality Control of p-Tolyl isocyanate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Toluene-2,4-diisocyanate content) | Gas Chromatography (GC) | Quantitative determination based on retention time and peak area comparison with certified reference standard. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Measurement of yellowness intensity by comparing sample color to APHA platinum-cobalt standard solutions. |
| Water Content | Karl Fischer Titration | Electrochemical titration using iodine-based reagent to quantify trace water via stoichiometric reaction. |
| Acid Number | Acid-Base Titration | Neutralization of acidic impurities with standardized KOH solution using phenolphthalein indicator. |
| Free Isocyanate Group (NCO) Content | Dibutylamine Back-Titration | Reaction of NCO groups with excess dibutylamine, followed by titration of unreacted amine with HCl. |
| Residue on Evaporation | Gravimetric Analysis | Evaporation of a known sample mass under controlled conditions and weighing of non-volatile residue. |
| Density at 25 C | Pycnometry or Digital Density Meter | Measurement of mass per unit volume using calibrated glass pycnometer or oscillating U-tube principle. |
| Refractive Index at 20 C | Refractometry | Determination of light bending angle at air-sample interface using calibrated refractometer. |
| Chlorinated Impurities (e.g., Phosgene residues) | Ion Chromatography (IC) | Separation and quantification of chloride ions after hydrolysis of residual phosgene derivatives. |
| Heavy Metals (Pb, Cd, Hg, Cr) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Atomization and excitation in high-temperature plasma; detection via element-specific emission wavelengths. |
| Total Chloride Content | Potentiometric Titration | Titration with silver nitrate using silver electrode to detect endpoint via potential change. |
| Volatility (Loss on Drying) | Thermogravimetric Analysis (TGA) | Measurement of mass loss upon heating under nitrogen to assess volatile impurities and solvent residues. |
Technical Specifications of p-Tolyl isocyanate
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.545–1.555 |
| Relative Density (20°C/25°C) | 1.060–1.075 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 p-Tolyl isocyanate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of p-Tolyl isocyanate
Packaging of p-Tolyl isocyanate
Industrial p-Tolyl 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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