1929-82-4 Usage
Description
Nitrapyrin, also known as N-Serve, is a chemical compound used as a nitrification inhibitor in the agricultural industry. It is a colorless to white crystalline solid with a mild, sweet odor and is classified as a crystal in terms of its chemical properties.
Uses
Used in Agricultural Industry:
Nitrapyrin is used as a nitrification inhibitor to limit the conversion of ammonium ions to nitrate by Nitrosomonas spp. bacteria in the soil. This helps improve nitrogen use efficiency and prevents the loss of soil nitrogen, which can contribute to environmental issues such as water pollution and greenhouse gas emissions.
Additionally, Nitrapyrin is used as an environmental toxin control agent, as it is listed on the US EPA Toxic Release Inventory (TRI) list. This indicates that its use is monitored and regulated to minimize its potential negative impact on the environment.
Furthermore, Nitrapyrin serves as a fertilizer additive, helping to control nitrification and maintain the balance of nutrients in the soil, ultimately leading to better crop yields and more sustainable agricultural practices.
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
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).
Check Digit Verification of cas no
The CAS Registry Mumber 1929-82-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,2 and 9 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1929-82:
(6*1)+(5*9)+(4*2)+(3*9)+(2*8)+(1*2)=104
104 % 10 = 4
So 1929-82-4 is a valid CAS Registry Number.
InChI:InChI=1/C6H3Cl4N/c7-5-3-1-2-4(11-5)6(8,9)10/h1-3H
1929-82-4Relevant articles and documents
Standard enthalpy of formation of 2-chloro-6-(trichloromethyl)pyridine
Tan, Zhi-Cheng,Kamaguchi, Akeji,Nagano, Yatsuhisa,Sakiyama, Minoru
, p. 615 - 624 (1989)
The standard enthalpy of formation of 2-chloro-6-(trichloromethyl)pyridine(cr) was determined to be -(55.4 +/- 1.8) kJ * mol-1 at 298.15 K by rotating-bomb oxygen combustion calorimetry using paraffin oil as a combustion aid and As2O3(aq) as a reducing agent for Cl2 formed.Nitric acid and chlorometallic acids of noble metals present in the final bomb solution were analysed by ion-chromatographic and atomic-absorption spectrometric methods, respectively.The effect of catalytic pre-oxidation of As2O3(aq) was evaluated.The standard molar energy of combustion was calculated using a computation form derived by combining that for CHON compounds with that for CHOCl compounds.The modifications of the form are described.
Preparation method for 2-chloro-6-trichloromethylpyridine and catalyst thereof and preparation method for catalyst
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Paragraph 0043-0057, (2018/10/19)
The invention discloses a preparation method for 2-chloro-6-trichloromethylpyridine and a catalyst thereof and a preparation method for the catalyst, and belongs to the field of the 2-chloro-6-trichloromethylpyridine. The catalyst for preparing the 2-chloro-6-trichloromethylpyridine comprises a carrier and iron-containing pyridine chlorine salt ionic liquid, and the iron-containing pyridine chlorine salt ionic liquid is loaded on the carrier. The catalyst is capable of, through loading the iron-containing pyridine chlorine salt ionic liquid on the carrier, greatly improving a contact area of the catalyst of a reactant, and improving a preparation efficiency of the 2-chloro-6-trichloromethylpyridine. In addition, the invention further relates to the preparation method for the catalyst for preparing the above 2-chloro-6-trichloromethylpyridine and the preparation method for the 2-chloro-6-trichloromethylpyridine. Defects existing in a traditional 2-chloro-6-trichloromethylpyridine preparation method that a reaction temperature is overhigh, the yield of a finished product is low and the catalyst is not easy to regenerate because of deactivation are overcome.
MACROKINETIC RELATIONSHIPS OF HIGH-TEMPERATURE CHLORINATION OF 2-PICOLINE HYDROCHLORIDE
Emel'yanov, V. I.,Stul',B. Ya.
, p. 2362 - 2365 (2007/10/02)
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