Substance profile
Dicrotophos
Dicrotophos is a yellowish liquid with a mild, ester odor.
01 · Identification
What Dicrotophos is
Dicrotophos is a yellowish liquid with a mild, ester odor. Its molecular formula is C8H16NO5P and its molecular weight is 237.19 g/mol. It boils at 400 °C, is miscible with water.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Dicrotophos identifiers and molecular data
Dicrotophos CAS number and EC number
Dicrotophos molecular formula and molecular weight
Other names for Dicrotophos
- dicrotophos (ISO)
- (Z)-2-dimethylcarbamoyl-1-methylvinyl dimethyl phosphate
03 · GHS classification
Dicrotophos hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Dicrotophos pictograms and signal word
Dicrotophos hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 1 or 2 | H300 | GHS06 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 3 | H311 | GHS06 |
| 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 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Dicrotophos hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H300 | Fatal if swallowed. |
| H311 | Toxic in contact with skin. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Dicrotophos. 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 Dicrotophos
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 Dicrotophos 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
Dicrotophos precautionary statements
CLP Annex VI assigns 10 precautionary statements to Dicrotophos. 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
Dicrotophos 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 | дикротофос (ISO) ( Z )-2-диметилкарбамоил-1-метилвинилов диметилов фосфат |
| Spanish español | Dicrotofós (ISO) fosfato de ( Z )-2-dimetilcarbamoil-1-metilvinilo y dimetilo |
| Czech čeština | dikrotofos (ISO) (Z)-[1-(N, N-dimethylkarbamoyl)prop-1-en-2-yl]-dimethyl-fosfát |
| Danish dansk | dicrotophos (ISO) (Z)-2-dimethylcarbamoyl-1-methylvinyldimethylphosphat |
| German Deutsch | Dicrotophos (ISO) ( Z )-2-Dimethylcarbamoyl-1-methylvinyldimethylphosphat |
| Estonian eesti | dikrotofoss (ISO) ( Z )-2-dimetüülkarbamoüül-1-metüülvinüüldimetüülfosfaat |
| Greek ελληνικά | dicrotophos (δικροτοφός) (ISO) φωσφορικό ( Ζ )-2-διμεθυλοκαρβαμοϋλο-1-μεθυλοβινύλιο διμεθύλιο |
| English English | dicrotophos (ISO) ( Z )-2-dimethylcarbamoyl-1-methylvinyl dimethyl phosphate |
| French français | dicrotophos (ISO) phosphate de ( Z )-2-diméthylcarbamoyl-1-méthylvinyle et de diméthyle |
| Croatian hrvatski | dikrotofos (ISO) ( Z )-2-dimetil-karbamoil-1-metil-vinil-dimetil-fosfat |
| Italian italiano | dicrotofos (ISO) fosfato di (Z)-2-dimetilcarbammoil-1-metilvinile e dimetile |
| Latvian latviešu | dikrotofoss (ISO) ( Z )-2-dimetilkarbamoil-1-metilvinildimetilfosfāts |
| Lithuanian lietuvių | dikrotofosas (ISO) ( Z )-2-dimetilkarbamoil-1-metilvinildimetilfosfatas |
| Hungarian magyar | dikrotofosz (ISO) ( Z )-2-dimetilkarbamoil-1-metilvinil-dimetil-foszfát |
| Maltese Malti | dikrotofos (ISO) fosfat tad-dimetil ta’ ( Z )-2-dimetilkarbamojl-1-metilvinil |
| Dutch Nederlands | dicrotofos (ISO) ( Z )-2-dimethylcarbamoyl-1-methylvinyldimethylfosfaat |
| Polish polski | dikrotofos (ISO) fosforan ( E )-2-(dimetylokarbamoilo)-1-metylowinylu-dimetylu |
| Portuguese português | dicrotofos (ISO) fosfato de ( Z )-2-dimetilcarbamoil-1-metilvinilo e de dimetilo |
| Romanian română | dicrotofos (ISO) fosfat de ( Z )-2-dimetilcarbamoil-1- metilvinil și de dimetil |
| Slovak slovenčina | dikrotofos (ISO) ( Z )-[2-(dimetylkarbamoyl)-1-metylvinyl]- dimetyl-fosfát |
| Slovenian slovenščina | dikrotofos (ISO) ( Z )-2-dimetilkarbamoil-1-metilvinil dimetil fosfat |
| Finnish suomi | dikrotofossi (ISO) ( Z )-2-dimetyylikarbamoyyli-1-metyylivinyylidimetyylifosfaatti |
| Swedish svenska | dikrotofos (ISO) ( Z )-2-dimetylkarbamoyl-1-metylvinyldimetylfosfat |
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
Dicrotophos GHS label elements
Everything CLP Annex VI fixes for Dicrotophos, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Dicrotophos
- Fatal if swallowed.
- Toxic in contact with skin.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- 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 ON SKIN:
- Immediately call a POISON CENTER/doctor/…
- Rinse mouth.
- Wash with plenty of water/…
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Dicrotophos in the GHS label constructor →
07 · Health hazards
Dicrotophos health hazards and exposure limits
Dicrotophos hazard summary
It is classified as moderately toxic and may be used only by certified applicators. [EXTOXNET] The average of two baseline respective cholinesterase activity determinations three days apart, with no exposures to enzyme inhibiting pesticides for at least 30 days, is recommended for each worker prior to exposure to cholinesterase inhibitors because of large inter-individual differences in published baseline values. To be established at least once a year. Removal from workplace exposures is recommended until the cholinesterase activity returns to within 20% of baseline. [TLVs and BEIs]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Dicrotophos carcinogenicity classification
Cancer Classification: Suggestive Evidence of Carcinogenicity, but Not Sufficient to Assess Human Carcinogenic Potential
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.
Dicrotophos occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | none See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 0.25 mg/m³ | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 0.25 mg/m3 [skin] | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | N.D. | The National Institute for Occupational Safety and Health (NIOSH) |
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
Dicrotophos 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.
Dicrotophos boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 400 °C (752 °F) | at 760 mmHg | HSDB |
| 400 °C (752 °F) | NIOSH |
Dicrotophos density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.216 g/cm³ | at 15 °C | HSDB |
Dicrotophos solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Totally miscible with acetone, alcohols, acetonitrile, chloroform, dichlorormethane, xylene; very slightly soluble (<10 g/kg) in diesel oil, kerosene | HSDB | |
| Miscible with carbon tetracloride | HSDB | ||
| MISCIBLE WITH HEXYLENE GLYCOL | HSDB |
Dicrotophos vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0001 mmHg | NIOSH | |
| 0.00001 mmHg | at 20 °C | CAMEO | |
| 159800 mmHg | at 25 °C | HSDB |
Dicrotophos flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 93.33 °C (200 °F) | above this value | HSDB |
| 93 °C (199.4 °F) | above this value | ICSC |
Dicrotophos lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Class IIIB Combustible Liquid: Fl.P. at or above 200 °F. | NIOSH |
Dicrotophos corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Corrosive to cast iron, mild steel, brass, and stainless steel. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Dicrotophos storage and handling
Dicrotophos safe storage
Separated from food and feedstuffs. Keep in a well-ventilated room. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Dicrotophos storage conditions
Do not ... store in or around home. Avoid food, feed products. Keep away from heat and open flame.
Source: Hazardous Substances Data Bank (HSDB)
Dicrotophos incompatible materials
Attacks some metals.
Source: Hazardous Substances Data Bank (HSDB)
Dicrotophos reactivity
Organophosphates, such as DICROTOPHOS, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides. This compound is incompatible with the following: Metals [Note: Corrosive to cast iron, mild steel, brass & stainless steel.] (NIOSH, 2024).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Dicrotophos in the storage compatibility matrix →
10 · Questions
Dicrotophos — frequently asked questions
What is the CAS number of Dicrotophos?
The CAS number of Dicrotophos is 141-66-2. Its EC number is 205-494-3.
What is the chemical formula of Dicrotophos?
The molecular formula of Dicrotophos is C8H16NO5P and its molecular weight is 237.19 g/mol.
What does a Dicrotophos label have to show?
Under CLP Annex VI the label for Dicrotophos carries the pictograms Skull and crossbones and Environment and the signal word is Danger.
Is Dicrotophos flammable?
CLP Annex VI assigns Dicrotophos 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 93.33 °C (200 °F), above this value (HSDB).
Is Dicrotophos a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Dicrotophos. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the exposure limit for Dicrotophos?
The US occupational exposure limit reported for Dicrotophos is none See Appendix G (The National Institute for Occupational Safety and Health (NIOSH)). 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 Dicrotophos?
The boiling point reported for Dicrotophos is 400 °C (752 °F), at 760 mmHg (HSDB).
How should Dicrotophos be stored?
Do not ... store in or around home. Avoid food, feed products. Keep away from heat and open flame. (Hazardous Substances Data Bank (HSDB))
Nearby
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