Substance profile
Thiram
Thiram is a white crystalline powder with a characteristic odor.
01 · Identification
What Thiram is
Thiram is a white crystalline powder with a characteristic odor. Its molecular formula is C6H12N2S4 and its molecular weight is 240.4 g/mol. It melts at 146 °C.
Under the GHS it carries the signal word Warning. It is classed as mutagens.
Other names for Thiram
- thiram (ISO)
- tetramethylthiuram disulphide
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 |
|---|---|
| H332 | Harmful if inhaled. |
| H302 | Harmful if swallowed. |
| H373 | May cause damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| 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: P260, P261, P264, P270, P271, P272, P273, P280, P301, P302, P304, P305, P312, P313, P314, P330, P332, P333, P337, P338, P352, P391, P501
03 · Physical and chemical properties
Thiram 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 | 129 °C (264.2 °F) | at 20 mmHg (reduced pressure) | HSDB |
| 128.89 °C (264 °F) | at 20 mmHg (reduced pressure) | CAMEO | |
| 129 °C (264.2 °F) | at 19.5016 mmHg (reduced pressure) | ICSC | |
| Melting point | 146 °C (294.8 °F) | Commercial grade | HSDB |
| 155.56 °C (312 °F) | NIOSH | ||
| Density | 1.3 g/cm³ | HSDB | |
| 1.29 g/cm³ | NIOSH | ||
| 1.43 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Solubility in alcohol and in ether less than 0.2%; solubility in acetone 1.2%; in benzene 2.5%. | HSDB | |
| Sol in carbon disulfide | HSDB | ||
| Vapor pressure | 0.000008 mmHg | NIOSH | |
| 0 mmHg | at 20 °C | CAMEO | |
| 0.0000172 mmHg | at 25 °C | HSDB | |
| Flash point | 89 °C (192.2 °F) | HSDB | |
| 137.78 °C (280 °F) | CAMEO | ||
| Lower explosive limit (LEL) | Combustible Solid | NIOSH | |
| Odor threshold | 5 mg/cu m | HSDB | |
| Corrosivity | Non-corrosive in the dry state. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on Thiram
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
Solubility in ethanol <10 g/L at 25 °C, acetone 80 g/L at 25 °C, chloroform 230 g/L at 25 °C, hexane 0.04 g/L at 20 °C; dichloromethane 170 g/L at 20 °C, toluene 18 g/L at 20 °C, isopropanol 0.7 g/L at 20 °C.
Source: HSDB
05 · Handling and storage
Storing and handling Thiram
Storage conditions
Keep out of reach of children. Keep away from food, drink and animal feeding stuffs.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Strong oxidizers, strong acids, oxidizable materials.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
THIRAM is incompatible with oxidizing materials and strong acids. Also incompatible with strong alkalis and nitrating agents (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Thiram in the storage compatibility matrix →