甲胺水溶液
性质
在常温下为无色有氨臭的气体或液体。易溶于水、乙醇和乙醚。易燃烧，其蒸气能与空气形成爆炸性混合物，爆炸极限526～21% (4.95%～20.7526)。相对密度0.662。熔点- 93.5℃。沸点-6. 3～-6.7℃。分解温度250℃。闪点(闭杯)0℃。自燃点430℃。蒸气压(25℃)202. 65Pa。临界温度156.9℃。临 界压 力 4. 073kPa。 折射率1. 351。 40%-甲胺水溶液沸点49.4℃。点-9.94℃。相对密度（d15.5）o．904。
制法
由甲醇和氨以1：(1.5～4)的配料比，在高温(425℃)、高压(2. 45MPa)下，用活性氧化铝作催化剂进行连续气相催化反应生成一、二、三甲胺的混合粗品，再经一系列的蒸馏塔连续加压精馏分离，冷凝脱氨，脱水，可得到一、二、三甲胺工业品，同时也可根据用户需要配成40%的一、二、三甲胺水溶液。
据有关文献报道，改变甲醇和氨的配比是得到所希望产品的有效方法，甲醇和氨的比例为1：1.5时是生成三甲胺的最佳条件，而甲醇和氨的比例为1:4时是生成一甲胺的最佳条件。
用途
本品主要用作农药（乐果、杀虫脒等）、医药（咖啡因、麻黄素等）、染料（茜素中间体）、炸药及燃料（水胶炸药、一甲肼等）、表面括性剂、促进剂、显影剂和溶剂等的原料。
浩瀚色谱研制HH-AM甲胺专用柱测定甲胺溶液中氨、二甲胺与三甲胺含量的GC法。对甲胺溶液中的杂质氨、二甲胺和三甲胺进行检测，通过控制气相色谱中的色谱柱类型和参数、质谱中的检测器类型和采集模式、供试品溶液的检测浓度，能够实现对甲胺溶液中的氨、二甲胺和三甲胺的同时检测，且具有较高的灵敏度、准确性和较好的专属性。
名称：甲胺专用柱
规格：3m*3mm
*高温度：120度
型号：HH-AM
应用：甲胺溶液中氨，甲醇，一甲胺，二甲胺，三甲胺，水的测定
适用于：岛津GC2010，GC-2014，GC-2030
methylamine water solution
nature
It is a colorless gas or liquid with ammonia odor at room temperature. Easy to dissolve in water, ethanol, and ether. Easy to burn, its vapor can form explosive mixtures with air, with an explosive limit of 526-21% (4.95% -20.7526). The relative density is 0.662. Melting point -93.5 ℃. Boiling point -6 3~-6.7 ℃. Decomposition temperature is 250 ℃. Flash point (closed cup) 0 ℃. The self ignition point is 430 ℃. Vapor pressure (25 ℃) 202 65Pa. The critical temperature is 156.9 ℃. Critical pressure 4 073kPa. The refractive index is 1.351. The boiling point of 40% - methylamine aqueous solution is 49.4 ℃. Point -9.94 ℃. Relative density (d15.5) 0.904.
Manufacturing method
Methanol and ammonia are mixed in a ratio of 1: (1.5-4) at high temperature (425 ℃) and high pressure (2 Under a pressure of 45MPa, a continuous gas-phase catalytic reaction is carried out using activated alumina as a catalyst to produce a mixed crude product of one, two, and trimethylamine. It is then subjected to a series of distillation towers for continuous pressurized distillation separation, condensation deamination, and dehydration to obtain industrial products of one, two, and trimethylamine. At the same time, it can also be prepared into a 40% aqueous solution of one, two, and trimethylamine according to user needs.
According to relevant literature reports, changing the ratio of methanol to ammonia is an effective method to obtain the desired product. The optimal condition for generating trimethylamine is when the ratio of methanol to ammonia is 1:1.5, while the optimal condition for generating methylamine is when the ratio of methanol to ammonia is 1:4.
purpose
This product is mainly used as a raw material for pesticides (such as dimethoate and chlorfenapyr), pharmaceuticals (such as caffeine and ephedrine), dyes (intermediate of Alizarin), explosives and fuels (such as water-based explosives and hydrazine), surface dispersants, accelerators, developers, and solvents.
The development of HH-AM methylamine specific column for the determination of ammonia, dimethylamine, and trimethylamine content in methylamine solution by GC method using Haohan chromatography. By detecting impurities such as ammonia, dimethylamine, and trimethylamine in methylamine solution, and controlling the column type and parameters in gas chromatography, detector type and collection mode in mass spectrometry, and detection concentration of the test solution, it is possible to simultaneously detect ammonia, dimethylamine, and trimethylamine in methylamine solution with high sensitivity, accuracy, and specificity.
Name: Methylamine specific column
Specification: 3m * 3mm
*High temperature: 120 degrees
Model: HH-AM
Application: Determination of ammonia, methanol, methylamine, dimethylamine, trimethylamine, and water in methylamine solution
Applicable to: Shimadzu GC2010, GC-2014, GC-2030
滕州市浩瀚色谱仪器技术服务有限公司
电话：0632-5667636
传真：0632-5667636
手机：15562228838,13963221227
地址：山东滕州市平行路（商务部和技术部）
邮箱：wangxiaoying9@126.com
QQ:1404939462
联系人：王经理
网址：www.haohansepu.com