Substance profile
Nitrapyrin
Nitrapyrin appears as colorless crystals or off-white crystalline solid.
01 · Identification
What Nitrapyrin is
Nitrapyrin appears as colorless crystals or off-white crystalline solid. Its molecular formula is C6H3Cl4N and its molecular weight is 230.9 g/mol. It melts at 62.8 °C, is practically insoluble in water.
Under the GHS it carries the signal word Warning.
Other names for Nitrapyrin
- nitrapyrin (ISO)
- 2-chloro-6-trichloromethylpyridine
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 |
|---|---|
| H302 | Harmful if swallowed. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P270, P273, P301, P312, P330, P391, P501
03 · Physical and chemical properties
Nitrapyrin 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 | 136 °C (276.8 °F) | at 11.2509 mmHg (reduced pressure) | ICSC |
| 136.94 °C (278.5 °F) | range, midpoint shown, at 11 mmHg (reduced pressure) | CAMEO | |
| Melting point | 62.78 °C (145 °F) | NIOSH | |
| 63 °C (145.4 °F) | ICSC | ||
| Density | Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.0 | at 20 °C | ICSC |
| Solubility | Insoluble | NIOSH | |
| Solubility in water: none | ICSC | ||
| less than 0.1 mg/mL at 64 °F (NTP, 1992) | at 17.78 °C | CAMEO | |
| Vapor pressure | 0.003 mmHg | at 22.78 °C | NIOSH |
| 0.0028 mmHg | at 22.78 °C | CAMEO | |
| Flash point | 100 °C (212 °F) | ICSC | |
| Lower explosive limit (LEL) | Combustible Solid [Explosive] | NIOSH |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Nitrapyrin
Incompatible materials
Aluminum, magnesium [Note: Emits oxides of nitrogen and chloride ion when heated to decomposition.]
Source: The National Institute for Occupational Safety and Health (NIOSH)
Reactivity
NITRAPYRIN is a base. Reacts exothermically with acids.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Nitrapyrin in the storage compatibility matrix →