4,4'-DDE
Also known as: p,p'-DDE, 1,1-dichloro-2,2-bis(4-chlorophenyl)ethene, 2,2-bis(4-chlorophenyl)-1,1-dichloroethylene, 2,2-bis(p-chlorophenyl)-1,1-dichloroethylene, 2,2-bis(p-chlorophenyl)-1-chloroethene, 1,1-bis(4-chlorophenyl)-2,2-dichloroethylene, 1,1-bis(p-chlorophenyl)-2,2-dichloroethylene, dichlorodiphenyldichloroethylene, para,para'-DDE, p,p'-dichlorodiphenyldichloroethylene
4,4'-DDE (CAS 72-55-9) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C14H8Cl4 and a molecular weight of 318.025 g/mol. Key properties include a melting point of 88-90 °C(lit.), a boiling point of 383.1±37.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 183.7±23.9 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H301 — Toxic if swallowed and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 72-55-9
- Jingsj CID
- J-26710-7
- Molecular Formula
- C14H8Cl4
- Molecular Weight
- 318.025 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 88-90 °C(lit.) |
|---|---|
| Boiling Point | 383.1±37.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 183.7±23.9 °C |
| Exact Mass | 315.938019 |
| LogP | 6.37 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.622 |
| Stability | Stable, but light-sensitive. Incompatible with strong bases, strong oxidizing agents. |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H301 — Toxic if swallowed
- H311 — Toxic in contact with skin
- H331 — Toxic if inhaled
- H370 — Causes damage to organs
- H411 — Toxic to aquatic life with long lasting effects
Activity & Biological Data
| Additional Information | [1]. Kelce WR, et al. Persistent DDT metabolite p,p'-DDE is a potent androgen receptor antagonist. Nature. 1995;375(6532):581-585. |
|---|
Customs & Trade Information
| HS Code | 2903999090 |
|---|---|
| Summary | 2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4,4'-DDE?
The CAS number of 4,4'-DDE is 72-55-9.
What are the molecular formula and molecular weight of 4,4'-DDE?
4,4'-DDE has molecular formula C14H8Cl4 and molecular weight 318.025 g/mol.
Is 4,4'-DDE hazardous?
4,4'-DDE has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H301 — Toxic if swallowed; H311 — Toxic in contact with skin.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4,4'-DDE (CAS 72-55-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26710-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.