Substance profile
Chlorthiophos I
Chlorthiophos I is a brown liquid with crystals at low temp.
01 · Identification
What Chlorthiophos I is
Chlorthiophos I is a brown liquid with crystals at low temp. Its molecular formula is C11H15Cl2O3PS2 and its molecular weight is 361.2 g/mol. It boils at 150 °C.
Under the GHS it carries the signal word Danger.
Other names for Chlorthiophos I
- chlorthiophos (ISO)
- [isomeric reaction mass in which O-2,5-dichlorophenyl-4-methylthiophenyl O,O-diethyl phosphorothioate predominates]
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 |
|---|---|
| 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. |
Precautionary statements: P270, P273, P280, P301, P302, P310, P330, P352, P391, P501
03 · Physical and chemical properties
Chlorthiophos I 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 | 150 °C (302 °F) | at 760 mmHg | DOE PAC |
| 150 °C (302 °F) | at 0.001 mmHg (reduced pressure) | HSDB | |
| 155.28 °C (311.5 °F) | range, midpoint shown, at 0.013 mmHg (reduced pressure) | CAMEO | |
| Density | 1.345 g/cm³ | at 20 °C | CAMEO |
| Solubility | Practically insol in water, sol in most organic solvents | HSDB | |
| Vapor pressure | 0.0004 mmHg | at 25 °C | CAMEO |
| 0.0000024 mmHg | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Chlorthiophos I
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)
Reactivity
Organophosphates, such as CHLORTHIOPHOS, 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 Chlorthiophos I in the storage compatibility matrix →