1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE
4,4'-DDE
CAS: 72-55-9
Molecular Formula: C14H8Cl4
1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE - Names and Identifiers
| Name | 4,4'-DDE |
| Synonyms | 4,4'-DDE PARAPARADDE p, p'-DDE Standard PARAPARADICHLORODIPHENYLDICHLOROETHYLENE 1,1-dichloro-2,2-bis(4-chorophenyl)ethylene 1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE 1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene solution, 4,4μ-DDE solution |
| CAS | 72-55-9 |
| EINECS | 200-784-6 |
1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE - Physico-chemical Properties
| Molecular Formula | C14H8Cl4 |
| Molar Mass | 318.03 |
| Density | 1.3406 (rough estimate) |
| Melting Point | 88-90 °C(lit.) |
| Boling Point | 403.45°C (rough estimate) |
| Flash Point | 11 °C |
| Water Solubility | 292mg/L(25 ºC) |
| Solubility | Soluble in most organic solvents |
| Vapor Presure | 13 at 30 °C (Wescott et al., 1981) |
| Appearance | White crystal |
| Storage Condition | 2-8℃ |
| Sensitive | Sensitive to light |
| Refractive Index | 1.6000 (estimate) |
| MDL | MFCD00000837 |
| Physical and Chemical Properties | Bioactive p,p'-DDE (4,4 '-DDE), a major metabolite of persistent DDT, is a potent androgen receptor antagonist with an IC50 of 5 μM and Ki of 3.5 μM. |
1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R40 - Limited evidence of a carcinogenic effect R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R39/23/24/25 - R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R11 - Highly Flammable R67 - Vapors may cause drowsiness and dizziness R65 - Harmful: May cause lung damage if swallowed R38 - Irritating to the skin R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S16 - Keep away from sources of ignition. S7 - Keep container tightly closed. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S33 - Take precautionary measures against static discharges. S29 - Do not empty into drains. S9 - Keep container in a well-ventilated place. |
| UN IDs | UN 3077 9/PG 3 |
1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE - Upstream Downstream Industry
| Downstream Products | 4,4'-DICHLORO-ALPHA-METHYLBENZHYDROL 4,4'-DDMU |
1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE - Nature
| melting point | 88-90 °C(lit.) |
| boiling point | 403.45°C (rough estimate) |
| density | 1.3406 (rough estimate) |
| Vapor pressure | 13 at 30°C (Wescott et al., 1981) |
| refractive index | 1.6000 (estimate) |
| flash point | 11 °C |
| storage conditions | 2-8°C |
| solubility | ethanol: soluble |
| morphology | neat |
| color | White, crystalline, odorless powder |
| water solubility | 292mg/L(25 °C) |
| BRN | 1913355 |
| Henry's Law Constant | 0.33 at 25°C (gas stripping-GC, Jantunen and Bidleman, 2006) |
| stability | Stable, but light-sensitive. Incompatible with strong bases, strong oxidizing agents. |
Last Update：2024-04-10 22:29:15
1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE - Uses and synthesis methods
| biological activity | p,p'-DDE (4,4 '-DDE) is the main metabolite of persistent DDT and is an effective androgen receptor antagonist with IC50 of 5 μM and Ki of 3.5 μM. | ||||||
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| category | Pesticides | ||||||
| toxicity classification | Poisoning | ||||||
| acute toxicity | oral-rat LD50: 880 mg/kg; Oral-mouse LD50: 700 mg/kg | ||||||
| flammability hazard characteristics | Combustible; Combustion produces toxic chloride smoke | ||||||
| storage and transportation characteristics | warehouse ventilation and low temperature drying | ||||||
| fire extinguishing agent | Dry powder, foam, sand, carbon dioxide, mist water |
Last Update：2024-04-10 22:29:15
1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE - Security information
| dangerous goods mark | Xn,N,T,F |
| hazard category code | 22-40-50/53-52/53-39/23/24/25-23/24/25-11-67-65-38-51/53 |
| safety instructions | 36/37-60-61-45-16-7-62-33-29-9 |
| dangerous goods transport number | UN 3077 9/PG 3 |
| WGK Germany | 3 |
| RTECS number | KV9450000 |
| HazardClass | 9 |
| PackingGroup | III |
| customs code | 29036990 |
| toxic substance data | 72-55-9(Hazardous Substances Data) |
| Toxicity | Acute oral LD50 for rats 880 mg/kg (RTECS, 1985). |
Last Update：2024-04-10 22:29:15
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Downstream Products for 1,1-Dichloro-2,2-bis(4-chlorophenyl)ethene, 4,4μ-DDE