Heavy metal chelates of formula (I): (where R = alkali (ne earth) ion; X = H, or alkali(ne earth) ion; and M = di- or tri-valent heavy metal ion at 0.5-1g atom per mole complex former) are prepd by reacting a 1-5C aliphatic aminoacid with 2 moles HCHO and 2 moles of a phenolic cpd. p-substd. by RSO3 to give an N,N-bis (2-HCHO and 2 moles of a phenolic cpd. p-substd. by RSO3 to give an N,N-bis(2-hydroxy-5-metal oxysulphonylbenzyl) aminoacid which is reacted, pref. in aq. medium, with 1 equiv. of a heavy metal salt or hydroxide. (I) are used to treat trace element, esp. Fe, deficiencies in plants and as fertiliser components, and as (I) are prepd. free from inorg. salt impurities, are suitable for spray application and are stable to acids and bases so may be used on alkaline soils.
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机译：式（I）的重金属螯合物：（其中R =碱（土）离子; X = H或碱（土）离子;并且M =每0.5-1g原子的二价或三价重金属离子通过使1-5C脂族氨基酸与2摩尔HCHO和2摩尔酚CPD反应来制备。 p-取代通过RSO3得到N，N-双（2-HCHO和2摩尔酚醛cpd。通过RSO3被p-取代）得到N，N-双（2-羟基-5-金属氧磺酰基苄基）氨基酸， （I）用于处理痕量元素（尤其是Fe），植物中的不足以及用作肥料成分，以及（I）用于制备含有1当量重金属盐或氢氧化物的水溶液。不含无机盐杂质，适合喷涂，对酸和碱稳定，因此可用于碱性土壤。
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