Aminomethylphosphonic acid (AMPA) is a weak organic acid with a phosphonic acid group. It is one of the primary degradation products of the herbicide glyphosate. AMPA has low toxicity which is comparable to that of glyphosate and it is therefore considered to be of no greater toxicological concern than glyphosate itself. AMPA has been shown to be broken down further by manganese oxide which occurs naturally in soil, or to phosphoric acid via bacterial action and ultimately to carbon dioxide and inorganic phosphate.

CAS：1066-51-9
中文别名：氨甲基磷酸;(氨甲基)膦酸;(氨基甲基)膦酸;
英文别名：(Aminomethyl)phosphonic acid;aminomethylphosphonic acid;Aminomethylphosphonic acid;(Aminomethyl)phosphonic Acid;
分子式：CH6NO3P
分子量：111.037
精确质量：111.009
Psa：93.36
Logp：-0.2194

MDL号：MFCD00008105
BRN号：1701219
EINECS号：000-000-0

外观与性状：白色晶体或粉末
密度：1.635 g/cm3
沸点：358ºC at 760 mmHg
熔点：300 °C
闪点：170.3ºC
折射率：1.505
水溶解性：soluble
稳定性：Stable. Incompatible with strong oxidizing agents. Protect from moisture.
储存条件：0-6ºC
蒸汽压：4.29E-06mmHg at 25°C

安全说明：S26-S36-S24/25-S45-S36/37/39
危险类别码：R36/37/38
WGK Germany：3
危险品运输编码：UN 3261 8/PG 3
海关编码：2931900090
危险品标志：Xi