4-Isocyanatobenzoyl chloride
4-异氰基苯甲酰氯
Also known as: p-Isocyanatobenzoyl chloride, Benzoyl chloride, 4-isocyanato-, 4-Isocyanatobenzoylchlorid, 4-Isocyanatobenzoic acid chloride
4-Isocyanatobenzoyl chloride (CAS 3729-21-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H4ClNO2 and a molecular weight of 181.57600 g/mol. It is also known as p-Isocyanatobenzoyl chloride, Benzoyl chloride, 4-isocyanato- and 4-Isocyanatobenzoylchlorid. Key properties include a melting point of 36-38ºC(lit.), a boiling point of 54-55ºC0.07 mm Hg(lit.), a density of 1.28g/cm3 and a flash point of 105.2ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3729-21-3
- Jingsj CID
- J-31261-3
- Molecular Formula
- C8H4ClNO2
- Chinese Name
- 4-异氰基苯甲酰氯
- Molecular Weight
- 181.57600 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 36-38ºC(lit.) |
|---|---|
| Boiling Point | 54-55ºC0.07 mm Hg(lit.) |
| Density | 1.28g/cm3 |
| Flash Point | 105.2ºC |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of 4-Isocyanatobenzoyl chloride?
The CAS number of 4-Isocyanatobenzoyl chloride is 3729-21-3.
What are the molecular formula and molecular weight of 4-Isocyanatobenzoyl chloride?
4-Isocyanatobenzoyl chloride has molecular formula C8H4ClNO2 and molecular weight 181.57600 g/mol.
Is 4-Isocyanatobenzoyl chloride hazardous?
4-Isocyanatobenzoyl chloride 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. "4-Isocyanatobenzoyl chloride (CAS 3729-21-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31261-3 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.