C14H8Cl4
318 g/mol
OtherDanger
P,p'-DDE
CAS72-55-9EC200-784-6
Category
Other
Compound Class
n.a
Primary Use
research standard for DDT metabolite analysis
p,p'-DDE is a persistent organic pollutant and a major breakdown product of the pesticide DDT. It is highly fat-soluble, leading to bioaccumulation in animal tissues, and is rarely excreted from the body.
degradation product of DDTenvironmental contaminant in ecotoxicology research
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 72-55-9
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chemical compound for research
Referencestereoisomer of
4,4'-DDE D8
CAS93952-19-3
pesticide contaminant reference standard
Referencesame scaffold
O,p′-DDE
CAS3424-82-6
research compound
Referencesame scaffold
P,p'-Methoxychlor olefin
CAS2132-70-9
research compound
Referencesame scaffold
Octocrylene
CAS6197-30-4
UV absorber in sunscreens
Safety Reference
Danger
H301Toxic if swallowed
H302Harmful if swallowed
H311Toxic in contact with skin
H315Causes skin irritation
H331Toxic if inhaled
H332Harmful if inhaled
H351Suspected of causing cancer
H372Causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H350May cause cancer
H360May damage fertility or the unborn child
H373May cause damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for P,p'-DDE (CAS 72-55-9) is 2903.99.
HS code (international, 6-digit)
2903.99
EU CN code (8-digit)
2903 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
1-chloro-4-[2,2-dichloro-1-(4-chlorophenyl)ethenyl]benzene
InChIKey
UCNVFOCBFJOQAL-UHFFFAOYSA-N
SMILES
C1=CC(=CC=C1C(=C(Cl)Cl)C2=CC=C(C=C2)Cl)Cl
Synonyms (43)
- 6WS
- DDE
- 1,2-bis(p-chlorophenyl)ethene
- 4,4'-DDE
- 4,4'-DDE, PESTANAL(R)
- DDE (VAN)
- DDE, p,p'-
- DDE; NSC 1153; p,p'-DDE
- DDT dehydrochloride
- p,2-dichloroethylene
- p,p'-DDE
- p,p'-DDE (Standard)
- para,para'-DDE