Substance profile
Thiophanate-Methyl
Thiophanate-Methyl is colorless crystals.
01 · Identification
What Thiophanate-Methyl is
Thiophanate-Methyl is colorless crystals. Its molecular formula is C12H14N4O4S2 and its molecular weight is 342.4 g/mol. It melts at 172 °C.
Under the GHS it carries the signal word Warning.
Other names for Thiophanate-Methyl
- thiophanate-methyl (ISO)
- dimethyl (1,2-phenylenedicarbamo-thioyl)biscarbamate
- dimethyl 4,4′-(o-phenylene) bis(3-thioallophanate)
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 |
|---|---|
| H351 | Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H341 | Suspected of causing genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H332 | Harmful if inhaled. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P260, P261, P271, P272, P273, P280, P304, P308, P312, P313, P333, P391, P501
03 · Physical and chemical properties
Thiophanate-Methyl 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 |
|---|---|---|---|
| Melting point | 172.22 °C (342 °F) | OSHA | |
| 182 °C (359.6 °F) | range, midpoint shown | HSDB | |
| 172 °C (341.6 °F) | decomposes, decomposes | HSDB | |
| Solubility | Thiophanate methyl is slightly soluble in most organic solvents... . | HSDB | |
| In acetone 58.1, cyclohexanone 43, methanol 29.2, acetonitrile 24.4, ethyl acetate 11.9 (all in g/kg, 23 °C). Slightly soluble in hexane. | at 23 °C | HSDB | |
| Vapor pressure | 7.13e-8 mmHg | at 25 °C | HSDB |
| 1e-7 mmHg | below this value | OSHA | |
| 1e-7 mmHg | below this value, at 20 °C | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on Thiophanate-Methyl
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.
Solubility
Sparingly soluble in most organic solvents at 25 °C (2.9 g/100 mL acetone; 7.8X10-1 g/100 mL methanol; 8.4X10-1 g/100 mL ethyl acetate; 7.3X10-2 g/100 mL dichloromethane; 1.8X10-2 g/100 mL n-octanol; 1.1X10-2 g/100 mL xylene; and 4.7X10-5 g/100 mL n-hexane)
Source: HSDB
05 · Handling and storage
Storing and handling Thiophanate-Methyl
Incompatible materials
... Incompatible with alkaline & copper-containing compounds.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
THIOPHANATE-METHYL is incompatible with strong acids and bases, and with strong reducing agents such as hydrides. Produces flammable gaseous hydrogen with active metals or nitrides. Incompatible with strong oxidizing acids, peroxides. Incompatible with alkaline material. Forms complexes with copper salts (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Thiophanate-Methyl in the storage compatibility matrix →