白色薄片状结晶或结晶性粉末。有特殊气味。味微甜。熔点281度（分解）。10%水溶液的PH值5.6-6.1.无旋光性.对热及空气稳定.对强酸不稳定,可导致脱甲基作用.溶于水(3.3g/100ml,25度)、稀酸和稀减溶液。极难溶于乙醇，几乎不溶于乙醚。
用途：人体必需的氨基酸之一，对于保护肝功能尤其重要，能促进毛发、指甲生长，并具有解毒和增强肌肉活动能力等作用，营养增补剂，可安全用于成人食品中。
Product properties: Colorless to white, odorless, non-toxic, acicular, crystal or crystalline powder with sweet taste and stable chemical properties. Nitrous acid can convert into L-lactic acid. Soluble in water, slightly soluble in ethanol. It’s a nutritional supplement.
Functions: DL-Methionine is one of the physical forms of methionine. DL-Methionine is not the natural form of methionine. Methionine is one of essential amino acids constituting the human body, involved in protein synthesis. Because it can not be generated in the body itself, it must be obtained from outside. Livestock and poultry lack of methionine, can lead to stunted growth, weight loss, liver and kidney function abate, muscle atrophy, fur, metamorphism and so on.
1. Methionine can be used as nutrient supplement. DL-methionine has the same effect with L-methionine, but DL-methionine is cheaper.
2. Methionine can be formulated as a flavoring agent.
3. Methionine has a protective role of the liver. Methionine has effects of anti-cirrhosis, fatty liver, and a variety of acute, chronic, viral, jaundice liver.
4. Methionine has a myocardial protective effect.
5. Methionine has an antidepressant effect.
6. Methionine has a blood pressure lowering effect.
7. Methionine has an antivirus poison eradicates effect.
8.Methionine is the feed nutrition enhancer.