Substance profile
Cyanophos
Cyanophos is a yellow to reddish-yellow transparent liquid with a faint characteristic odor.
01 · Identification
What Cyanophos is
Cyanophos is a yellow to reddish-yellow transparent liquid with a faint characteristic odor. It melts at 14.5 °C.
Under the GHS it carries the signal word Warning.
Other names for Cyanophos
- cyanophos (ISO)
- O-4-cyanophenyl O,O-dimethyl phosphorothioate
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 |
|---|---|
| H312 | Harmful in contact with skin. |
| H302 | Harmful 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, P312, P330, P352, P391, P501
03 · Physical and chemical properties
Cyanophos 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 | 119.5 °C (247.1 °F) | range, midpoint shown, at 0.09 mmHg (reduced pressure) | HSDB |
| 119.44 °C (247 °F) | range, midpoint shown, at 0.09 mmHg (reduced pressure) | CAMEO | |
| Melting point | 14.5 °C (58.1 °F) | range, midpoint shown | HSDB |
| 14.44 °C (58 °F) | range, midpoint shown | CAMEO | |
| Density | 1.26 g/cm³ | range, midpoint shown, at 25 °C | HSDB |
| Solubility | Very soluble in methanol, ethanol, acetone & chloroform. Sparingly soluble in n-hexane, kerosene. | HSDB | |
| Miscible in alcohols, benzene, chloroform, ketones, toluene, xylene. | HSDB | ||
| Solubility: 46 mg/l water at 30 °C; 27 g/kg hexane at 20 °C | at 30 °C, Technical grade | HSDB | |
| Vapor pressure | 787600 mmHg | at 20 °C | HSDB |
| 0.0008 mmHg | at 20 °C | CAMEO | |
| Flash point | 104 °C (219.2 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Cyanophos
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 CYANOPHOS, 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 Cyanophos in the storage compatibility matrix →