Nitrapyrin is an organic compound with the formula ClC5H3NCCl3. It is a widely used nitrification inhibitor in agriculture as well as a soil bactericide and has been in use since 1974. Nitrapyrin was put up for review by the EPA and deemed safe for use in 2005. Since nitrapyrin is an effective nitrification inhibitor to the bacteria nitrosomonas it has been shown to drastically the reduce NO2 emissions of soil. Nitrapyrin is a white crystalline solid with a sweet odor and is often mixed with anhydrous ammonia for application.

CAS：1929-82-4
中文别名：2-氯-6-(三氯甲基)吡啶;氯啶;氯草定;氯甲基吡啶;
英文别名：2-Chloro-6-trichloromethylpyridine;2-Chloro-6-(trichloromethyl)pyridine,CP;2-chloro-6-(trichloromethyl)pyridine;Nitrapyrin;2-Chloro-6-(Trichloromethyl)pyridine;2-chloro-6-trichloromethylpyridine;
分子式：C6H3Cl4N
分子量：230.907
精确质量：228.902
Psa：12.89
Logp：3.5617

MDL号：MFCD00072500
EINECS号：217-682-2
RTECS号：US7525000

外观与性状：无色晶体或灰白色结晶固体
密度：1.582 g/cm3
沸点：136-138°C
熔点：62-63°C
闪点：100°C
折射率：1.575
水溶解性：Insoluble.
储存条件：0-6ºC
蒸汽压：0.0225mmHg at 25°C

RTECS号：US7525000
安全说明：S24-S61
危险类别码：R22
危险品运输编码：UN 2811
海关编码：2933399053
危险类别：6.1(b)
包装等级：III
危险品标志：Xn; N

生产方法
1 N-乙基-2-氯-5-吡啶甲基胺的制备将2-氯-5-氯甲基吡啶滴加到乙胺水溶液中,搅拌1.5h。浓缩反应混合液,残留物用Na2CO3溶液中和,用乙醚萃取,无水MgSO4干燥,蒸出乙醚后,得黄色液体,即得N-乙基-2-氯-5-吡啶甲基胺,收率45%。 性状及白色结晶性粉末，主要用于农用化学品或医药品的生产。
用途
性状及白色结晶性粉末，主要用于农用化学品或医药品的生产。