Substance profile
Thiamethoxam
Thiamethoxam is a crystalline powder with a musty odor.
01 · Identification
What Thiamethoxam is
Thiamethoxam is a crystalline powder with a musty odor. Its molecular formula is C8H10ClN5O3S and its molecular weight is 291.72 g/mol. It melts at 139 °C.
Under the GHS it carries the signal word Warning.
Other names for Thiamethoxam
- thiamethoxam (ISO)
- 3-(2-chloro-thiazol-5-ylmethyl)-5-methyl[1,3,5]oxadiazinan-4-ylidene-N-nitroamine
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 |
|---|---|
| H361fd | Suspected of damaging fertility. Suspected of damaging the unborn child. |
| H302 | Harmful if swallowed. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P270, P273, P301, P312, P330, P391, P501
03 · Physical and chemical properties
Thiamethoxam 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 | 139.1 °C (282.4 °F) | HSDB | |
| Density | 1.57 g/cm³ | at 20 °C | HSDB |
| Solubility | In acetone 48, ethyl acetate 7.0, dichloromethane 110, toluene 0.680, methanol 13, n-octanol 0.620, hexane <0.001 (all in g/L) | HSDB | |
| In water, 4.1X10+3 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 0.0495 mmHg | at 25 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Thiamethoxam
Storage conditions
Store the material in a well-ventilated, secure area out of reach of children and domestic animals. Do not store food, beverages or tobacco products in the storage area. Prevent eating, drinking, tobacco use, and cosmetic application in areas where there is a potential for exposure to the material. Wash thoroughly with soap and water after handling. /Platinum Insecticide/
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Thiamethoxam in the storage compatibility matrix →