Substance profile
Omethoate
Omethoate is a colorless liquid with a mercaptan-like odor.
01 · Identification
What Omethoate is
Omethoate is a colorless liquid with a mercaptan-like odor. Its molecular formula is C5H12NO4PS and its molecular weight is 213.19 g/mol. It boils at 135 °C, melts at -28 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Omethoate identifiers and molecular data
Omethoate CAS number and EC number
Omethoate molecular formula and molecular weight
Other names for Omethoate
- omethoate (ISO)
- O,O-dimethyl S-methylcarbamoylmethyl phosphorothioate
03 · GHS classification
Omethoate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Omethoate pictograms and signal word
Omethoate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 3 | H301 | GHS06 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 4 | H312 | GHS07 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
Omethoate hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H301 | Toxic if swallowed. |
| H312 | Harmful in contact with skin. |
| H400 | Very toxic to aquatic life. |
This page lists only the codes assigned to Omethoate. 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 Omethoate
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 Omethoate 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
Omethoate precautionary statements
CLP Annex VI assigns 11 precautionary statements to Omethoate. 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
Omethoate 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 | ометоат (ISO) O, O -диметилов S -метилкарбамоилметилов фосфоротиоат |
| Spanish español | Ometoato (ISO) fosforotioato de O, O -dimetilo y S -metilcarbamoilmetilo |
| Czech čeština | omethoát (ISO) N -methyl-2-(dimethoxyfosforylsulfanyl)acetamid |
| Danish dansk | omethoat (ISO) O, O- dimethyl- S -methylcarbamoylmethylthiophosphat |
| German Deutsch | Omethoat (ISO) O, O -Dimethyl- S -methylcarbamoylmethylphosphorothioat |
| Estonian eesti | ometoaat (ISO) O , O -dimetüül- S -metüülkarbamoüülmetüülfosforotioaat |
| Greek ελληνικά | omethoate (ομεθοάτη) (ISO) θειοφωσφορικό O, O -διμεθύλιο S-μεθυλοκαρβαμοϋλομεθύλιο |
| English English | omethoate (ISO) O, O -dimethyl S -methylcarbamoylmethyl phosphorothioate |
| French français | ométhoate (ISO) phosphorothioate de O, O -diméthyle et de S-méthylcarbamoylméthyle |
| Croatian hrvatski | ometoat (ISO) O, O -dimetil- S -metil-karbamoil-metil-fosforotioat |
| Italian italiano | ometoato (ISO) tiofosfato di O, O-dimetile e S-metilcarbammoilmetile |
| Latvian latviešu | ometoāts (ISO) O, O -dimetil- S -metilkarbamoilmetilfosforotioāts |
| Lithuanian lietuvių | ometoatas (ISO) O, O -dimetil- S -metilkarbamoilmetiltiofosfatas |
| Hungarian magyar | ometoát (ISO) O, O -dimetil- S -metilkarbamoilmetil-tiofoszfát |
| Maltese Malti | ometoat (ISO) fosforotijoat ta’ S-metilkarbamojlmetil ta’ O, O-dimetil |
| Dutch Nederlands | omethoaat (ISO) O , O -dimethyl- S -methylcarbamoylmethylthiofosfaat |
| Polish polski | ometoat (ISO) tiofosforan S-(metylokarbamoilo)metylu-O, O-dimetylu |
| Portuguese português | ometoato (ISO) tiofosfato de O , O -dimetilo e de S -metilcarbamoilmetilo |
| Romanian română | ometoat (ISO) tiofosfat de O, O -dimetil și de S -metilcarbamoilmetil |
| Slovak slovenčina | ometoát (ISO) O, O -dimetyl- S -[(metylkarbamoyl)metyl]-fosforotioát |
| Slovenian slovenščina | ometoat (ISO) O, O -dimetil S -metilkarbamoilmetil fosforotioat |
| Finnish suomi | ometoaatti (ISO) O , O -dimetyyli- S -metyylikarbamoyylimetyylifosforotioaatti |
| Swedish svenska | ometoat (ISO) O, O -dimetyl- S -metylkarbamoylmetylfosfortioat |
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
Omethoate GHS label elements
Everything CLP Annex VI fixes for Omethoate, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Omethoate
- Toxic if swallowed.
- Harmful in contact with skin.
- Very toxic to aquatic life.
- 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/…
- Call a POISON CENTER/doctor/… if you feel unwell.
- 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 Omethoate in the GHS label constructor →
07 · Health hazards
Omethoate health hazards and exposure limits
Omethoate hazard summary
A small number of the organophosphates (OPs) can Induce Delayed Neuropathy (OPIDN). OPIDN usually occurs after ingestion and is usually nonoccupational. [Levy, p. 431] Allergic contact dermatitis reported in farmworkers; [Kanerva, p. 781] Contact dermatitis is rare. [Kanerva, p. 1783] The major degradate/metabolite and oxygen analog of dimethoate; More toxic than dimethoate; A potent cholinesterase inhibitor; [Reference #1] May cause irritation; A highly toxic cholinesterase inhibitor; Readily absorbed through skin; Toxic by ingestion; Targets CNS, heart, blood, and eyes; [Aldrich MSDS] 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] See Dimethoate.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Omethoate 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.
Omethoate boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 135 °C (275 °F) | approximate | HSDB |
Omethoate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -28 °C (-18.4 °F) | HSDB |
Omethoate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.32 g/cm³ | HSDB |
Omethoate solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Readily soluble in alcohols, acetone, and many hydrocarbons. Slightly soluble in diethyl ether. Almost insoluble in petroleum ether. | HSDB | |
| Soluble in toluene. Miscible in dichloromethane, 2-propanol. Nearly insoluble in n-hexane. | HSDB | ||
| Readily soluble in water. | HSDB |
Omethoate vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0000248 mmHg | at 20 °C | HSDB |
| 0.0000248 mmHg | Haz-Map |
Omethoate corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Non-corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Omethoate storage and handling
Omethoate storage conditions
Rooms used for storage only should be soundly constructed & fitted with secure locks. Floors should be kept clear & pesticides clearly identified. If repacking is carried out in storage rooms, adequate light should be available; floors should be impervious & sound ... . /Pesticides/
Source: Hazardous Substances Data Bank (HSDB)
Omethoate incompatible materials
... Incompatible with alkaline materials.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Omethoate in the storage compatibility matrix →
10 · Questions
Omethoate — frequently asked questions
What is the CAS number of Omethoate?
The CAS number of Omethoate is 1113-02-6. Its EC number is 214-197-8.
What is the chemical formula of Omethoate?
The molecular formula of Omethoate is C5H12NO4PS and its molecular weight is 213.19 g/mol.
What does a Omethoate label have to show?
Under CLP Annex VI the label for Omethoate carries the pictograms Skull and crossbones and Environment and the signal word is Danger.
Is Omethoate flammable?
CLP Annex VI assigns Omethoate 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.
Is Omethoate a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Omethoate. 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 boiling point of Omethoate?
The boiling point reported for Omethoate is 135 °C (275 °F), approximate (HSDB).
What is the melting point of Omethoate?
The melting point reported for Omethoate is -28 °C (-18.4 °F) (HSDB).
How should Omethoate be stored?
Rooms used for storage only should be soundly constructed & fitted with secure locks. Floors should be kept clear & pesticides clearly identified. If repacking is carried out in storage rooms, adequate light should be available; floors should be impervious & sound ... . /Pesticides/ (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Omethoate
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