1,4-Phenylene diisocyanate
对苯二异氰酸酯
Also known as: 1,4-Diisocyanatobenzene, Benzene 1,4-diisocyanate, p-Phenylene diisocyanate, PPDI, p-phenylene isocyanate, p-phenyl diisocyanate, Phenylene-1,4-diisocyanate
1,4-Phenylene diisocyanate (CAS 104-49-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H4N2O2 and a molecular weight of 160.130 g/mol. It is also known as 1,4-Diisocyanatobenzene, Benzene 1,4-diisocyanate and p-Phenylene diisocyanate. Key properties include a melting point of 96-99 °C(lit.), a boiling point of 236.2±23.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 92.4±28.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 104-49-4
- Jingsj CID
- J-1142239-2
- Molecular Formula
- C8H4N2O2
- Chinese Name
- 对苯二异氰酸酯
- Molecular Weight
- 160.130 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 96-99 °C(lit.) |
|---|---|
| Boiling Point | 236.2±23.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 92.4±28.0 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of 1,4-Phenylene diisocyanate?
The CAS number of 1,4-Phenylene diisocyanate is 104-49-4.
What are the molecular formula and molecular weight of 1,4-Phenylene diisocyanate?
1,4-Phenylene diisocyanate has molecular formula C8H4N2O2 and molecular weight 160.130 g/mol.
Is 1,4-Phenylene diisocyanate hazardous?
1,4-Phenylene diisocyanate has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,4-Phenylene diisocyanate (CAS 104-49-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1142239-2 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.