1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane

Also known as: p,p'-DDD, 4,4'-DDD, TDE, Rothane, 2,2-Bis(4-chlorophenyl)-1,1-dichloroethane, 1,1'-(2,2-dichloroethylidene)bis(4-chlorobenzene), Dichlorodiphenyldichloroethane

1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane (CAS 72-54-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C14H10Cl4 and a molecular weight of 320.041 g/mol. Key properties include a melting point of 94-96 °C, a boiling point of 405.7±40.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 199.3±24.7 °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.: 72-54-8
Jingsj CID: J-47853-7
Molecular Formula: C₁₄H₁₀Cl₄
Molecular Weight: 320.041 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	94-96 °C
Boiling Point	405.7±40.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	199.3±24.7 °C
Exact Mass	317.953674
LogP	5.39
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.599
Stability	Stable. Incompatible with strong oxidizing agents.

GHS Safety & Compliance

Flammable / Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger

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
H410 — Very toxic to aquatic life with long lasting effects

Activity & Biological Data

Additional Information	[1]. Mendel JL, et al. Conversion of p,p' -DDT to p,p' -DDD by intestinal flora of the rat. Science. 1966;151(3717):1527-1528. [2]. Gerić M, et al. Cytogenetic status of human lymphocytes after exposure to low concentrations of p,p'-DDT, and its metabolites (p,p'-DDE, and p,p'-DDD) in vitro. Chemosphere. 2012;87(11):1288-1294.

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 1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane?

The CAS number of 1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane is 72-54-8.

What are the molecular formula and molecular weight of 1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane?

1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane has molecular formula C14H10Cl4 and molecular weight 320.041 g/mol.

Is 1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane hazardous?

1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane 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: 8/21/2026

How to cite: Jingsj. "1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane (CAS 72-54-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47853-7 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.