Substance profile
Terbufos
Terbufos is a slightly yellowish liquid with a mercaptan-like odor.
01 · Identification
What Terbufos is
Terbufos is a slightly yellowish liquid with a mercaptan-like odor. Its molecular formula is C9H21O2PS3 and its molecular weight is 288.4 g/mol. It boils at 68.9 °C, melts at -29 °C.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 2nd degree.
02 · Identifiers
Terbufos identifiers and molecular data
Terbufos CAS number and EC number
Terbufos molecular formula and molecular weight
Other names for Terbufos
- terbufos (ISO)
- S-tert-butylthiomethyl O,O-diethylphosphorodithioate
03 · GHS classification
Terbufos hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Terbufos pictograms and signal word
Terbufos 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 |
| 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.
Terbufos hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H310 | Fatal in contact with skin. |
| H300 | Fatal if swallowed. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Terbufos. 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 Terbufos
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 Terbufos 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
Terbufos precautionary statements
CLP Annex VI assigns 10 precautionary statements to Terbufos. 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
Terbufos 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 | тербуфос (ISO) S- трет -бутилтиометилов O, O -диетилов фосфородитиоат |
| Spanish español | Terbufós (ISO) fosforoditioato de S-terc -butiltiometilo y O, O -dietilo |
| Czech čeština | terbufos (ISO) S -( terc -butylsulfanyl)methyl- O, O -diethyl-fosforodithioát |
| Danish dansk | terbufos (ISO) S-tert -butylthiomethyl- O, O- diethyldithiophosphat |
| German Deutsch | Terbufos (ISO) S-tert -Butylthiomethyl- O, O -diethylphosphorodithioat |
| Estonian eesti | terbufoss (ISO) S-tert -butüültiometüül- O , O -dietüülfosforoditioaat |
| Greek ελληνικά | terbufos (τερβουφός) (ISO) Ο, Ο -διαιθυλοδιθειοφωσφορικό S - tert -βουτυλοθειομεθύλιο |
| English English | terbufos (ISO) S-tert-butylthiomethyl O, O -diethylphosphorodithioate |
| French français | terbufos (ISO) O, O -diéthylphosphorodithioate de S-tert-butylthiométhyle |
| Croatian hrvatski | terbufos (ISO) S - tert -butil-tiometil- O, O -dietil-fosforoditioat |
| Italian italiano | terbufos (ISO) tiofosfato di S - terz -butiltiometile e O , O -dietile |
| Latvian latviešu | terbufoss (ISO) S- terc -butiltiometil- O, O -dietilfosforditioāts |
| Lithuanian lietuvių | terbufosas (ISO) S-tret-butiltiometil- O, O -dietilditiofosfatas |
| Hungarian magyar | terbufosz (ISO) S - terc -butiltiometil- O, O - dietil-ditiofoszfát |
| Maltese Malti | terbufos (ISO) O, O-dietilfosforoditijoat ta’ S-tert-butiltijometil |
| Dutch Nederlands | terbufos (ISO) S - tert -butylthiomethyl- O , O -diëthyldithiofosfaat |
| Polish polski | terbufos (ISO) ditiofosforan S-(tert-butylosulfanylo)metylu-O, O-dietylu |
| Portuguese português | terbufos (ISO) ditiofosfato de S - terc -butiltiometilo e de O , O -dietilo |
| Romanian română | terbufos (ISO) ditiofosfat de S-terț- butiltiometil și de O, O -dietil |
| Slovak slovenčina | terbufos (ISO) S -[ terc -(butylsulfanyl)metyl]- O, O -dietyl-fosforoditioát |
| Slovenian slovenščina | terbufos (ISO) S-terc-butiltiometil O, O -dietilfosforoditioat |
| Finnish suomi | terbufossi (ISO) S- tert -butyylitiometyyli- O , O -dietyylifosforoditioaatti |
| Swedish svenska | terbufos (ISO) S -tert-butyltiometyl- O, O -dietylfosforditioat |
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
Terbufos GHS label elements
Everything CLP Annex VI fixes for Terbufos, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Terbufos
- Fatal in contact with skin.
- Fatal if swallowed.
- 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 Terbufos in the GHS label constructor →
07 · Health hazards
Terbufos health hazards and exposure limits
Terbufos hazard summary
Products containing >15% terbufos are Restricted Use Pesticides to be handled 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
Terbufos carcinogenicity classification
Cancer Classification: Group E Evidence of Non-carcinogenicity for Humans
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.
08 · Physical and chemical properties
Terbufos 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.
Terbufos boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 68.9 °C (156 °F) | ICSC | |
| 315 °C (599 °F) | at 760 mmHg | DOE PAC | |
| 69 °C (156.2 °F) | at 0.01 mmHg (reduced pressure) | HSDB |
Terbufos melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -29 °C (-20.2 °F) | HSDB | |
| -29.22 °C (-20.6 °F) | CAMEO | ||
| -29.2 °C (-20.6 °F) | ICSC |
Terbufos density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.1 g/cm³ | ICSC | |
| 1.105 g/cm³ | at 24 °C | HSDB |
Terbufos solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Readily soluble in most organic solvents: aromatic hydrocarbons, chlorinated hydrocarbons, alcohols, acetone | HSDB | |
| Insoluble (<1 mg/ml) (NTP, 1992) | CAMEO | ||
| In water, 5.07 mg/l @ 25 °C | at 25 °C | HSDB |
Terbufos vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.00032 mmHg | HSDB | |
| 0.0003 mmHg | at 25 °C | CAMEO |
Terbufos flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 88 °C (190.4 °F) | Technical terbufos | HSDB |
| 87.78 °C (190 °F) | CAMEO | ||
| 87.8 °C (190 °F) | ICSC |
Terbufos corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Non-corrosive to metals. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Terbufos 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.
Terbufos fire potential
Moderate fire risk.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Terbufos storage and handling
Terbufos safe storage
Separated from food and feedstuffs and oxidizing materials. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Terbufos storage conditions
You should store this chemical in a freezer and away from all mineral acids and bases.
Source: Hazardous Substances Data Bank (HSDB)
Terbufos reactivity
Organothiophosphates, such as TERBUFOS, 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 decomposes in the presence of acids or bases (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Terbufos in the storage compatibility matrix →
11 · Questions
Terbufos — frequently asked questions
What is the CAS number of Terbufos?
The CAS number of Terbufos is 13071-79-9. Its EC number is 235-963-8.
What is the chemical formula of Terbufos?
The molecular formula of Terbufos is C9H21O2PS3 and its molecular weight is 288.4 g/mol.
What does a Terbufos label have to show?
Under CLP Annex VI the label for Terbufos carries the pictograms Skull and crossbones and Environment and the signal word is Danger.
Is Terbufos flammable?
CLP Annex VI assigns Terbufos 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 88 °C (190.4 °F), Technical terbufos (HSDB).
Is Terbufos a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Terbufos. 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 Terbufos?
The boiling point reported for Terbufos is 68.9 °C (156 °F) (ICSC).
What is the melting point of Terbufos?
The melting point reported for Terbufos is -29 °C (-20.2 °F) (HSDB).
How should Terbufos be stored?
You should store this chemical in a freezer and away from all mineral acids and bases. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Terbufos
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