Substance profile
Disulfoton
Disulfoton is a pure compound: yellow liquid with a characteristic, sulfur odor.
01 · Identification
What Disulfoton is
Disulfoton is a pure compound: yellow liquid with a characteristic, sulfur odor. Its molecular formula is C8H19O2PS3 and its molecular weight is 274.4 g/mol. It boils at 133 °C, melts at -25 °C, is miscible with water.
Under the GHS it carries the signal word Danger.
Other names for Disulfoton
- disulfoton (ISO)
- O,O-diethyl 2-ethylthioethyl phosphorodithioate
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| 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. |
Precautionary statements: P270, P273, P280, P301, P302, P310, P330, P352, P391, P501
03 · Physical and chemical properties
Disulfoton 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.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 132.5 °C (270.5 °F) | range, midpoint shown | OSHA |
| 62 °C (143.6 °F) | at 0.01 mmHg (reduced pressure) | HSDB | |
| 132.5 °C (270.5 °F) | range, midpoint shown, at 1.5 mmHg (reduced pressure) | HSDB | |
| Melting point | -25 °C (-13 °F) | HSDB | |
| -25 °C (-13 °F) | above this value | NIOSH | |
| Density | 1.14 g/cm³ | NIOSH | |
| 1.144 g/cm³ | CAMEO | ||
| 1.144 g/cm³ | at 20 °C | HSDB | |
| Solubility | SOL IN MOST ORG LIQ & FATTY OILS | HSDB | |
| Miscible in n-hexane, dichloromethane, 2-propanol, toluene | HSDB | ||
| In water, 16.3 mg/l @ 20 °C | at 20 °C | HSDB | |
| Vapor pressure | 0.0002 mmHg | NIOSH | |
| 0.00018 mmHg | at 20 °C | CAMEO | |
| 0.0000975 mmHg | at 25 °C | HSDB | |
| Flash point | 133 °C (271.4 °F) | HSDB | |
| 82.22 °C (180 °F) | above this value | NIOSH | |
| Lower explosive limit (LEL) | Combustible Liquid, but will not ignite easily. | NIOSH |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Disulfoton
Storage conditions
Store in original container, preferably in a locked area, away from children, food, feed.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Alkalis.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
DISULFOTON is incompatible with the following: Alkalis (NIOSH, 2024). Organothiophosphates, such as DISULFOTON, 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.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Disulfoton in the storage compatibility matrix →