Substance profile
Propyzamide
Propyzamide is an off-white solid and is odorless.
01 · Identification
What Propyzamide is
Propyzamide is an off-white solid and is odorless. Its molecular formula is C12H11Cl2NO and its molecular weight is 256.12 g/mol. It melts at 156 °C.
Under the GHS it carries the signal word Warning.
Other names for Propyzamide
- propyzamide (ISO)
- 3,5-dichloro-N-(1,1-dimethylprop-2-ynyl)benzamide
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>. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P273, P280, P308, P313, P391, P501
03 · Physical and chemical properties
Propyzamide 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 | 155.5 °C (311.9 °F) | range, midpoint shown | HSDB |
| 20 °C (68 °F) | decomposes | HSDB | |
| Solubility | SOL IN MANY ALIPHATIC & AROMATIC SOLVENTS. | HSDB | |
| Vapor pressure | 0.000085 mmHg | at 25 °C | HSDB |
| 0.000085 mmHg | Haz-Map | ||
| Corrosivity | NONCORROSIVE UNDER NORMAL USE CONDITIONS. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on Propyzamide
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
In water - 15 mg/l (25 °C). In methanol, isopropanol 150, cyclohexanone, methyl ethyl ketone 200, dimethyl sulfoxide 330 (all in g/l). Moderately soluble in benzene, xylene, carbon tetrachloride. Sightly soluble in petroleum ether.
Source: HSDB
05 · Handling and storage
Storing and handling Propyzamide
Storage conditions
THERE ARE NO SPECIAL STORAGE PROBLEMS UNDER NORMAL AMBIENT CONDITIONS. STORAGE AT HIGH TEMP (GREATER THAN 50 °C) SHOULD BE AVOIDED.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
3,5-DICHLORO-N-(1,1-DIMETHYL-2-PROPYNYL)BENZAMIDE is a chlorinated amide. Organic amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Propyzamide in the storage compatibility matrix →