Substance profile
Thionazin
Thionazin is a pure cmpd is almost colorless liquid.
01 · Identification
What Thionazin is
Thionazin is a pure cmpd is almost colorless liquid. Its molecular formula is C8H13N2O3PS and its molecular weight is 248.24 g/mol. It boils at 80 °C, melts at -1.7 °C, is miscible with water.
Under the GHS it carries the signal word Danger.
Other names for Thionazin
- thionazin (ISO)
- O,O-diethyl O-pyrazin-2-yl 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 |
|---|---|
| H310 | Fatal in contact with skin. |
| H300 | Fatal if swallowed. |
Precautionary statements: P270, P280, P301, P302, P310, P330, P352
03 · Physical and chemical properties
Thionazin 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 | 80 °C (176 °F) | HSDB | |
| 80 °C (176 °F) | at 760 mmHg | DOE PAC | |
| 80 °C (176 °F) | at 0.001 mmHg (reduced pressure) | CAMEO | |
| Melting point | -1.7 °C (28.9 °F) | HSDB | |
| -1.67 °C (29 °F) | CAMEO | ||
| Density | 1.207 g/cm³ | range, midpoint shown, at 25 °C | HSDB |
| Solubility | MISCIBLE WITH MOST ORG SOLVENTS | HSDB | |
| MISCIBLE WITH POLYETHYLENE GLYCOLS & DIMETYL FORMAMIDE | HSDB | ||
| 1140 PPM IN WATER @ 24.8 °C | at 24.8 °C | HSDB | |
| Vapor pressure | 0.003 mmHg | at 30 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Thionazin
Reactivity
Organothiophosphates, such as THIONAZIN, 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 Thionazin in the storage compatibility matrix →