1,4-Phenylene diisocyanate Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 104-49-4 |
| Product name | 1,4-Phenylene diisocyanate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| 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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
Documents We Provide for 1,4-Phenylene diisocyanate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1,4-Phenylene diisocyanate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1,4-Phenylene diisocyanate
| Industry | Application | Process |
|---|---|---|
| Polyurethane | Production of polyurethane foam | Reacted directly with polyols to produce polyurethane |
| Coatings | Formulation of coatings and adhesives | Used in copolymerization or as a crosslinking agent |
| Elastomers | Production of elastomeric materials | Reacted with polyether or polyester polyols |
| Fibers | Production of specialty fibers | Reacted with specific polymers to prepare fiber precursors |
Manufacturing Quality Control of 1,4-Phenylene diisocyanate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies TDI isomers by separation on a capillary column and flame ionization detection relative to internal standard. |
| Isomer Ratio (2,4-TDI / 2,6-TDI) | Gas Chromatography (GC) with FID detection | Determines relative peak areas of 2,4- and 2,6-isomers after chromatographic separation. |
| Color (APHA) | Visual comparison or spectrophotometric measurement at 430 nm | Measures yellowness intensity by comparing sample absorbance at 430 nm to APHA color scale standards. |
| Water Content | Karl Fischer Titration (coulometric or volumetric) | Electrochemical titration quantifying water via iodine generation and stoichiometric reaction with water. |
| Acidity (as HCl) | Acid-Base Titration with NaOH and potentiometric endpoint | Neutralizes acidic impurities (e.g., HCl) using standardized sodium hydroxide solution; endpoint detected by pH change. |
| Iron Content | ICP-OES | Atomizes sample in plasma and measures characteristic emission intensity of Fe at 238.204 nm. |
| Chloride Ion Content | Ion Chromatography (IC) with conductivity detection | Separates and quantifies Cl- anions using anion-exchange column and suppressed conductivity detection. |
| Residue on Evaporation | Gravimetric Analysis | Evaporates known volume under controlled conditions and weighs non-volatile residue. |
| Density at 25 C | Digital Density Meter (oscillating U-tube principle) | Measures density based on resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index at 25 C | Abbe Refractometer | Determines refractive index by measuring critical angle of total internal reflection. |
| Free Isocyanate Content | Back Titration with dibutylamine and HCl | Reacts NCO groups with excess dibutylamine, then titrates unreacted amine with standardized HCl. |
| Heavy Metals (as Pb) | AAS (Flame or Graphite Furnace) | Atomizes sample and measures absorbance of lead-specific wavelength (283.3 nm) after air-acetylene or graphite furnace atomization. |
Technical Specifications of 1,4-Phenylene diisocyanate
| Test Item | Specification |
|---|---|
| Appearance | White to light yellow crystalline powder |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 130–134°C |
| Identification (IR) | Conforms to reference spectrum |
| Color (APHA/Pt-Co) | <=100 |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
|
|
Download COA of 1,4-Phenylene diisocyanate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1,4-Phenylene diisocyanate
Packaging of 1,4-Phenylene diisocyanate
Industrial 1,4-Phenylene diisocyanate 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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply