Substance profile
Demeton-S
Demeton-S is a colorless oil with a technical grade demeton has a pronounced mercaptan-like odor.
01 · Identification
What Demeton-S is
Demeton-S is a colorless oil with a technical grade demeton has a pronounced mercaptan-like odor. Its molecular formula is C8H19O3PS2 and its molecular weight is 258.3 g/mol. It is soluble in water.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Demeton-S identifiers and molecular data
Demeton-S CAS number and EC number
Demeton-S molecular formula and molecular weight
Other names for Demeton-S
- demeton-S (ISO)
- diethyl-S-2-ethylthioethyl phosphorothioate
03 · GHS classification
Demeton-S hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Demeton-S pictograms and signal word
Demeton-S 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 1 or 2 | H310 | GHS06 |
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.
Demeton-S hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H310 | Fatal in contact with skin. |
| H300 | Fatal if swallowed. |
This page lists only the codes assigned to Demeton-S. 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 Demeton-S
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 Demeton-S 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
Demeton-S precautionary statements
CLP Annex VI assigns 7 precautionary statements to Demeton-S. 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.
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
Demeton-S 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 | деметон- S (ISO) диетил- S -2-етилтиоетилов фосфоротиоат |
| Spanish español | Demetón- S (ISO) fosforotioato de dietilo y S -2-etiltioetilo |
| Czech čeština | demeton- S (ISO) O, O -diethyl- S -[2-(ethylsulfanyl)ethyl]-fosforothioát |
| Danish dansk | demeton- S (ISO) diethyl- S -2-ethylthioethylthiophosphat |
| German Deutsch | Demeton- S (ISO) O, O -Diethyl- S -(2-ethylthioethyl) phosphorothioat |
| Estonian eesti | demetoon- S (ISO) dietüül- S -2-etüültioetüülfosforotioaat |
| Greek ελληνικά | demeton- S (δεμετόνη-S) (ISO) θειοφωσφορικός διαιθυλ- S -2-αιθυλοθειοαιθυλεστέρας |
| English English | demeton- S (ISO) diethyl- S -2-ethylthioethyl phosphorothioate |
| French français | déméton- S (ISO) phosphorothioate de diéthyle et de S -2-éthylthioéthyle |
| Croatian hrvatski | demeton- S (ISO) dietil- S -2-etil-tioetil-fosforotioat |
| Italian italiano | demeton-S (ISO) tiofosfato di dietile e S-2-etiltioetile |
| Latvian latviešu | demetons- S (ISO) dietil- S -2-etiltioetilfosfortioāts |
| Lithuanian lietuvių | demetonas- S (ISO) dietil- S -2-etiltioetiltiofosfatas |
| Hungarian magyar | demeton- S (ISO) dietil- S -2-etiltioetil-tiofoszfát |
| Maltese Malti | demeton- S (ISO) fosforotijoat tad-dietil-S-2-etiltijoetil |
| Dutch Nederlands | demeton- S (ISO) diëthyl- S -2-ethylthioëthylthiofosfaat |
| Polish polski | demeton- S (ISO) tiofosforan S -(2-etylosulfanylo)etylu- O , O -dietylu |
| Portuguese português | demetão- S (ISO) tiofosfato de dietilo e de S -2-etiltioetilo |
| Romanian română | demeton- S (ISO) tiofosfat de dietil și de S -2-etiltioetil |
| Slovak slovenčina | demetón-S (ISO) O, O -dietyl-S-[2-(etylsulfanyl)etyl]-fosforotioát |
| Slovenian slovenščina | demeton- S (ISO) dietil- S -2-etiltioetil fosforotioat |
| Finnish suomi | demetoni- S (ISO) dietyyli- S -2-etyylitioetyylifosforotioaatti |
| Swedish svenska | demeton- S (ISO) dietyl- S -2-etyltioetylfosfortioat |
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
Demeton-S GHS label elements
Everything CLP Annex VI fixes for Demeton-S, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Demeton-S
- Fatal in contact with skin.
- Fatal if swallowed.
- Do not eat, drink or smoke when using this product.
- 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/…
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Demeton-S in the GHS label constructor →
07 · Health hazards
Demeton-S health hazards and exposure limits
Demeton-S hazard summary
A cholinesterase inhibitor that may cause CNS effects resulting in convulsions and respiratory depression; Can be absorbed through skin; [ICSC] Effects in high-dose animal studies include inhibition of cholinesterase activity and decreased growth rate, but no histological changes; [HSDB] 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
08 · Physical and chemical properties
Demeton-S 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.
Demeton-S boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 128 °C (262.4 °F) | at 1 mmHg (reduced pressure) | HSDB |
| 128 °C (262.4 °F) | at 0.750062 mmHg (reduced pressure) | ICSC |
Demeton-S density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.13 g/cm³ | ICSC | |
| 1.132 g/cm³ | at 21 °C | HSDB |
Demeton-S solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Soluble in most organic solvents. | HSDB | |
| In water, 2,000 mg/L at 20 °C | at 20 °C | HSDB | |
| Solubility in water, g/100ml at 20 °C: 0.2 | at 20 °C | ICSC |
Demeton-S vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.00026 mmHg | at 20 °C | HSDB |
| 0.0002625 mmHg | at 20 °C | ICSC | |
| 0.000262 mmHg | Haz-Map |
Demeton-S vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 8.92 (air = 1) | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Demeton-S storage and handling
Demeton-S safe storage
Separated from food and feedstuffs. Dry. Keep in a well-ventilated room. Store in an area without drain or sewer access.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Planning storage for a mix of chemicals? Check Demeton-S in the storage compatibility matrix →
10 · Questions
Demeton-S — frequently asked questions
What is the CAS number of Demeton-S?
The CAS number of Demeton-S is 126-75-0. Its EC number is 204-801-8.
What is the chemical formula of Demeton-S?
The molecular formula of Demeton-S is C8H19O3PS2 and its molecular weight is 258.3 g/mol.
What does a Demeton-S label have to show?
Under CLP Annex VI the label for Demeton-S carries the pictogram Skull and crossbones and the signal word is Danger.
Is Demeton-S flammable?
CLP Annex VI assigns Demeton-S 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 Demeton-S a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Demeton-S. 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 Demeton-S?
The boiling point reported for Demeton-S is 128 °C (262.4 °F), at 1 mmHg (reduced pressure) (HSDB).
Nearby
Substances next to Demeton-S
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