Substance profile
Dimethomorph
Dimethomorph is a colorless to grey crystalline powder and is odorless.
01 · Identification
What Dimethomorph is
Dimethomorph is a colorless to grey crystalline powder and is odorless. Its molecular formula is C21H22ClNO4 and its molecular weight is 387.9 g/mol. It melts at 138 °C.
Under the GHS it carries the signal word Danger.
Other names for Dimethomorph
- dimethomorph (ISO)
- (E,Z)- 4-(3-(4-chlorophenyl)- 3-(3,4-dimethoxyphenyl) acryloyl)morpholine
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.
03 · Physical and chemical properties
Dimethomorph 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 | 137.5 °C (279.5 °F) | range, midpoint shown | HSDB |
| 137 °C (278.6 °F) | range, midpoint shown | HSDB | |
| Density | 1.318 g/cm³ | at 20 °C | HSDB |
| Solubility | Solubility (g/L at 20 deg ): acetone 50; toluene 20; methanol 20; dichloromethane 500 | HSDB | |
| Solubility in n-hexane 0.11; methanol 39; ethyl acetate 48.3; toluene 49.5; acetone 100; dichloromethane (all for E,Z, in g/L) | HSDB | ||
| In water (mg/L at 20 °C): 81.1 at pH 4; 49.2 at pH 7; 41.8 at pH 9 | at 20 °C | HSDB | |
| Vapor pressure | 7.2756 mmHg | at 25 °C | HSDB |
| 0.00000739 mmHg | at 25 °C | HSDB | |
| 1e-8 mmHg | Haz-Map | ||
| Lower explosive limit (LEL) | Avoid raising a dust cloud. Fine dust clouds may be explosive mixtures with air. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Dimethomorph
Storage conditions
Store in secure, well ventilated building away from food and feed and out of reach of children.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Dimethomorph in the storage compatibility matrix →