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| | Nitrapyrin Basic information | | Uses |
| | Nitrapyrin Chemical Properties |
| Melting point | 62-63°C | | Boiling point | 136-138°C | | density | 1.8732 (rough estimate) | | vapor pressure | 2.8 x 10-3 mmHg at 20 °C (quoted, Verschueren, 1983) | | refractive index | 1.6000 (estimate) | | Fp | 100 °C | | storage temp. | Keep in dark place,Sealed in dry,Room Temperature | | solubility | Soluble in 10 mg/ml ethanol. | | form | Powder | | pka | -3.75±0.10(Predicted) | | Specific Gravity | 1.579 (25℃) | | color | White | | Water Solubility | Insoluble. <0.01 g/100 mL at 18 ºC | | Merck | 14,6574 | | BRN | 1618997 | | Henry's Law Constant | 2.13 x 10-3 atm?m3/mol (approximate - calculated from water solubility and vapor pressure) | | Exposure limits | NIOSH REL: 10 mg/m3, STEL 20 mg/m3 (total), 5 mg/m3 (respirable
fraction); OSHA PEL: 15 mg/m3 (total), 5 mg/m3 (respirable fraction); ACGIH TLV: TWA
10 mg/m3. | | InChIKey | DCUJJWWUNKIJPH-UHFFFAOYSA-N | | LogP | 3.325-3.41 at 23.5℃ | | CAS DataBase Reference | 1929-82-4(CAS DataBase Reference) | | NIST Chemistry Reference | Pyridine, 2-chloro-6-(trichloromethyl)-(1929-82-4) | | EPA Substance Registry System | Nitrapyrin (1929-82-4) |
| Hazard Codes | Xn;N,Xi,N,Xn | | Risk Statements | 22-51/53-36/37/38 | | Safety Statements | 24-61-37/39-26 | | RIDADR | UN 2811 | | WGK Germany | 2 | | RTECS | US7525000 | | TSCA | Yes | | HazardClass | 6.1(b) | | PackingGroup | III | | HS Code | 29333990 | | Toxicity | LC50 for channel catfish 5.8 mg/L (Worthing and Hance, 1991); acute oral LD50
for rats 1,230 mg/kg (Verschueren, 1983), 940 mg/kg (RTECS, 1985). |
| | Nitrapyrin Usage And Synthesis |
| Uses | 2-Chloro-6-(trichloromethyl)pyridine is a nitrification inhibitor used to limit NO and N2O emissions from crops. Improves nitrogen use efficiency. Environmental toxin on US EPA Toxic Release Inventory list (TRI) list. | | Chemical Properties | Crystals. | | Physical properties | Colorless to white crystalline solid with a mild, sweet odor | | Uses | 2-Chloro-6-(trichloromethyl)pyridine is | | Uses | Bactericide used to inhibit Nitrosomonas spp. from oxidizing ammonium ions in soil. | | Uses | Fertilizer additive to control nitrification and prevent loss of soil nitrogen. | | Definition | ChEBI: Nitrapyrin is a chloropyridine that is 2-chloropyridine which is substituted by a trichloromethyl group at position 6. It is a nitrification inhibitor that is co-applied with nitrogen fertilizer in agroecosystems. It has a role as a nitrification inhibitor, an antibacterial agent and an agrochemical. | | General Description | Colorless crystals or off-white crystalline solid. | | Air & Water Reactions | Insoluble in water. | | Reactivity Profile | Nitrapyrin is a base. Reacts exothermically with acids. | | Hazard | Liver damage. Questionable carcinogen. | | Fire Hazard | Flash point data for Nitrapyrin are not available. Nitrapyrin is probably combustible. | | Flammability and Explosibility | Nonflammable | | Agricultural Uses | Nitrapyrin, also called N serve, is a nitrification
inhibitor | | Safety Profile | Poison by ingestion.
Moderately toxic by skin contact.
Experimental reproductive effects. Mutation
data reported. When heated to
decomposition it emits very toxic fumes of
Cland NOx. | | Environmental Fate | Biological. 6-Chloropicolinic acid and carbon dioxide were reported as biodegradation
products (Verschueren, 1983).
Soil. Hydrolyzes in soil to 6-chloropyridine-2-carboxylic acid (Worthing and Hance,
1991).
Photolytic. Photolysis of nitrapyrin in water yielded 6-chloropicolinic acid, 6-hydroxypicolinic
acid and an unidentified polar material (Verschueren, 1983).
Chemical/Physical. Emits toxic fumes of nitrogen oxides and chlorides when heated
to decomposition (Sax and Lewis, 1987; Lewis, 1990). |
| | Nitrapyrin Preparation Products And Raw materials |
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