Substance profile
DDT (ISO)
DDT (ISO) is biaxial elongated tablets, needles from 95% alcohol and is odorless.
01 · Identification
What DDT (ISO) is
DDT (ISO) is biaxial elongated tablets, needles from 95% alcohol and is odorless. Its molecular formula is C14H9Cl5 and its molecular weight is 354.5 g/mol. It boils at 260 °C, melts at 109 °C.
Under the GHS it carries the signal word Danger. It is classed as carcinogens.
02 · Identifiers
DDT (ISO) identifiers and molecular data
DDT (ISO) CAS number and EC number
DDT (ISO) molecular formula and molecular weight
Other names for DDT (ISO)
- clofenotane (INN)
- dicophane
- 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane
- dichlorodiphenyltrichloroethane
03 · GHS classification
DDT (ISO) hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
DDT (ISO) pictograms and signal word
DDT (ISO) hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 3 | H301 | GHS06 |
| Carcinogenicity GHS chapter 3.6 | Category 2 | H351 | GHS08 |
| Specific target organ toxicity - repeated exposure GHS chapter 3.9 | Category 1 | H372 | GHS08 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 1 | H410 | GHS09 |
DDT (ISO) hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H351 | Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H301 | Toxic if swallowed. |
| H372 | Causes damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to DDT (ISO). The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for DDT (ISO)
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of DDT (ISO) issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
DDT (ISO) precautionary statements
CLP Annex VI assigns 13 precautionary statements to DDT (ISO). They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Disposal
What has to happen to the contents and the empty container.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
DDT (ISO) name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | ДДТ (ISO) клофенотан (INN)дикофан1,1,1-трихлоро-2,2-бис(4-хлорофенил)етандихлородифенилтрихлороетан |
| Spanish español | DDT (ISO) clofenotano (DCI)dicofano1,1,1-tricloro-2,2-bis(4-clorofenil)etanodiclorodifeniltricloroetano |
| Czech čeština | DDT (ISO) klofenotan (INN)dikofan1,1,1-trichlor-2,2- bis (4-chlorfenyl)ethandichlordifenyltrichlorethan |
| Danish dansk | DDT (ikke anerkendt af ISO) clofenotan (INN)dicophan1,1,1-trichlor-2,2-bis(4-chlorphenyl)ethandichlordiphenyltrichlorethan |
| German Deutsch | DDT (ISO) Clofenotan (INN)Dicophan1,1,1-Trichlor-2,2-bis(4-chlorphenyl)-ethanDichlorodiphenyltrichlorethan |
| Estonian eesti | DDT (ISO) klofenotaan (INN)dikofaan1,1,1-trikloro-2,2-bis(4-klorofenüül)etaandiklorodifenüültrikloroetaan |
| Greek ελληνικά | DDT (ISO) clofenotane (κλοφαινοτάνη) (INN)δικοφάνιο1,1,1-τριχλωρο-2,2-δις(4-χλωροφαινυλ)αιθάνιοδιχλωροδιφαινυλοτριχλωροαιθάνιο |
| English English | DDT (ISO) clofenotane (INN)dicophane1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethanedichlorodiphenyltrichloroethane |
| French français | DDT (ISO) clofénotane (INN)dicophane1,1,1-trichloro-2,2-bis(4-chlorophényl)éthanedichlorodiphényltrichloroéthane |
| Croatian hrvatski | DDT (ISO) klofenotan (INN)dikofan1,1,1-triklor-2,2-bis(4-klorfenil)etandiklordifenil-trikloretan |
| Italian italiano | DDT (ISO) clofenotano (INN)dicofano1,1,1-tricloro-2,2-bis(4-clorofenil)etanodiclorodifeniltricloroetano |
| Latvian latviešu | DDT (ISO) klofenotāns (INN)dikofāns1,1,1-trihlor-2,2-bis(4-hlorfenil)etānsdihlordifeniltrihloretāns |
| Lithuanian lietuvių | DDT (ISO) klofenotanas (INN)dikofanas1,1,1-trichlor-2,2-bis(4-chlorfenil)etanasdichlordifeniltrichloetanas |
| Hungarian magyar | DDT (ISO) klofenotán (INN)dikofán1,1,1-triklór-2,2-bisz(4-klórfenil)etándiklordifeniltriklóretán |
| Maltese Malti | DDT (ISO) klofenotan (INN)dikofan1,1,1-trikloro-2,2-bis(4-klorofenil)etandiklorodifeniltrikloroetan |
| Dutch Nederlands | DDT (ISO) clofenotaan (INN)dicofaan1,1,1-trichloor-2,2-bis(4-chloorfenyl)ethaandichloordifenyltrichloorethaan |
| Polish polski | DDT (ISO) klofenotan (INN)dikofan1,1,1-trichloro-2,2-bis(4-chlorofenylo)etandichlorodifenylotrichloroetan |
| Portuguese português | DDT (ISO) clofenotano (DCI)dicofano1,1,1-tricloro-2,2-bis(4-clorofenil)etanodiclorodifeniltricloroetano |
| Romanian română | DDT (ISO) clofenotan (INN)dicofan1,1,1-triclor-2,2-bis(4-clorofenil)etandicloridifeniltricloroetan |
| Slovak slovenčina | DDT (ISO) klofenotán (INN)dikofán1,1,1-trichlór-2,2-bis(4-chlórfenyl)etándichlórdifenyltrichlóretán |
| Slovenian slovenščina | DDT (ISO) klofenotan (INN)dikofan1,1,1-trikloro-2,2-bis(4-klorofenil)etandiklorodifeniltrikloroetan |
| Finnish suomi | DDT (ISO) klofenotaani (INN)dicophane1,1,1-trikloori-2,2-bis(4-kloorifenyyli)etaanidiklooridifenyylitrikloorietaani |
| Swedish svenska | DDT (ISO) klofenotan (INN)dikofan1,1,1-triklor-2,2-bis(4-klorfenyl)etandiklordifenyltrikloretan |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
DDT (ISO) GHS label elements
Everything CLP Annex VI fixes for DDT (ISO), laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
DDT (ISO)
- Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- Toxic if swallowed.
- Causes damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Obtain special instructions before use.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF exposed or concerned:
- Immediately call a POISON CENTER/doctor/…
- Get medical advice/attention.
- Get medical advice/attention if you feel unwell.
- Rinse mouth.
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open DDT (ISO) in the GHS label constructor →
07 · Health hazards
DDT (ISO) health hazards and exposure limits
DDT (ISO) hazard summary
Still used in some parts of the world, DDT persists in the environment and in animal tissues. It has been especially harmful to predator species of birds. High-dose animal studies show that organochlorine insecticides are toxic to the liver. [LaDou, p. 553] Allergic contact dermatitis reported in farmworkers; [Kanerva, p. 1777] Despite the billions of pounds of DDT that have been manufactured and used, hepatic injury acquired as the result of occupational or environmental exposure to it remains to be reported. [Zimmerman, p. 413]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
DDT (ISO) carcinogenicity classification
Under the conditions of these bioassays there was no evidence for the carcinogenicity of DDT in Osborne-Mendel rats or B6C3F1 mice, of TDE in female Osborne-Mendel rats or B6C3F1 mice of either sex, or of p,p'-DDE in Osborne-Mendel rats, although p,p'-DDE was hepatotoxic in Osborne-Mendel rats. The findings suggest a possible carcinogenic effect of TDE in male Osborne-Mendel rats, based on the induction of combined follicular-cell carcinomas and follicular-cell adenomas of the thyroid. Because of the variation of these tumors in control male rats in this study, the evidence does not permit a more conclusive interpretation of these lesions. p,p'-DDE was carcinogenic in B6C3F1 mice, causing hepatocellular carcinomas in both sexes.
Source: US National Toxicology Program · TR-131: Bioassays of DDT, TDE, and p,p'-DDE for Possible Carcinogenicity (CASRN 50-29-3, CASRN 72-54-8, CASRN 72-55-9) (1978 )
Evaluation: There is inadequate evidence in humans for the carcinogenicity of DDT. There is sufficient evidence in experimental animals for the carcinogenicity of DDT. Overall evaluation: DDT is possibly carcinogenic to humans (2B).
Source: Hazardous Substances Data Bank (HSDB)
DDT: reasonably anticipated to be a human carcinogen.
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
DDT (ISO) occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 1.0 [mg/m3] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | TWA 1 mg/m3 [skin] | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | Ca TWA 0.5 mg/m3 See Appendix A | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 500 mg/m3 ; A potential occupational carcinogen. (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 500.0 [mg/m3] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | NIOSH considers DDT to be a potential occupational carcinogen. | Hazardous Substances Data Bank (HSDB) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
DDT (ISO) properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
DDT (ISO) boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 260 °C (500 °F) | at 760 mmHg | CAMEO |
| 260 °C (500 °F) | ICSC |
DDT (ISO) melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 108.5 °C (227.3 °F) | HSDB | |
| 108.33 °C (227 °F) | NIOSH | ||
| 109 °C (228.2 °F) | ICSC |
DDT (ISO) density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.99 g/cm³ | NIOSH | |
| 1.6 g/cm³ | ICSC | ||
| 0.985 g/cm³ | range, midpoint shown | HSDB |
DDT (ISO) solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Soluble in acetone, ether, benzene, carbon tetrachloride, kerosene, dioxane, and pyridine. | HSDB | |
| High solubility in fat (100,000 ppm) | HSDB |
DDT (ISO) vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 2e-7 mmHg | NIOSH | |
| 1.6e-7 mmHg | at 20 °C | HSDB | |
| 1.5e-7 mmHg | at 20 °C | CAMEO |
DDT (ISO) flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 75 °C (167 °F) | closed cup | HSDB |
| 74.72 °C (166.5 °F) | range, midpoint shown | HSDB |
DDT (ISO) lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Contact with strong oxidizers may cause fire and explosion hazard. | HSDB | |
| Combustible Solid | NIOSH |
DDT (ISO) odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Detection threshold in water: 0.35 ppm | HSDB | |
| Odor high 5.0725 mg/cu m; odor low 5.0725 mg/cu m. | HSDB |
DDT (ISO) corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Should not be kept in iron containers | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
DDT (ISO) fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
DDT (ISO) fire potential
Behavior in fire: Melts and burns.
Source: Hazardous Substances Data Bank (HSDB)
Solubility
Solubility, g/100 mL solvent: 58 acetone; 78 benzene; 42 benzyl benzoate; 45 carbon tetrachloride; 74 chlorobenzene; 116 cyclohexanone; 2 g/100 ml 95% alcohol; 28 ethyl ether; 10 gasoline; 3 isopropanol; 8-10 kerosene; 75 morpholine; 11 peanut oil; 10-16 pine oil; 61 tetralin; 50 tributyl phosphate.
Source: HSDB
10 · Handling and storage
DDT (ISO) storage and handling
DDT (ISO) safe storage
Provision to contain effluent from fire extinguishing. Separated from iron, aluminium, aluminium salts and food and feedstuffs. See Chemical Dangers.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
DDT (ISO) storage conditions
... Should not be kept in iron containers and should not be mixed with iron and aluminum salts nor with alkaline substances. High storage temperatures should also be avoided.
Source: Hazardous Substances Data Bank (HSDB)
DDT (ISO) incompatible materials
Strong oxidizers, alkalis.
Source: Hazardous Substances Data Bank (HSDB)
DDT (ISO) reactivity
DDT may react with iron, aluminum, aluminum and iron salts, and alkalis. It is incompatible with ferric chloride and aluminum chloride. It can also react with strong oxidizing materials. (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check DDT (ISO) in the storage compatibility matrix →
11 · Questions
DDT (ISO) — frequently asked questions
What is the CAS number of DDT (ISO)?
The CAS number of DDT (ISO) is 50-29-3. Its EC number is 200-024-3.
What is the chemical formula of DDT (ISO)?
The molecular formula of DDT (ISO) is C14H9Cl5 and its molecular weight is 354.5 g/mol.
What does a DDT (ISO) label have to show?
Under CLP Annex VI the label for DDT (ISO) carries the pictograms Skull and crossbones, Health hazard and Environment and the signal word is Danger.
Is DDT (ISO) flammable?
CLP Annex VI assigns DDT (ISO) no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it. The flash point reported for it is 75 °C (167 °F), closed cup (HSDB).
Is DDT (ISO) a carcinogen?
CLP Annex VI assigns DDT (ISO) H351 — suspected of causing cancer. That is category 2: the evidence points that way but is not conclusive. IARC places it in Group 2A: probably carcinogenic to humans.
What is the exposure limit for DDT (ISO)?
The US occupational exposure limit reported for DDT (ISO) is 1.0 [mg/m3] (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of DDT (ISO)?
The boiling point reported for DDT (ISO) is 260 °C (500 °F), at 760 mmHg (CAMEO).
What is the melting point of DDT (ISO)?
The melting point reported for DDT (ISO) is 108.5 °C (227.3 °F) (HSDB).
How should DDT (ISO) be stored?
... Should not be kept in iron containers and should not be mixed with iron and aluminum salts nor with alkaline substances. High storage temperatures should also be avoided. (Hazardous Substances Data Bank (HSDB))
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