| 释义 |
Sequestrene|sɪˈkwɛstriːn|
Also sequestrene.
[f. sequestration + -ene.]
A proprietary term for preparations of ethylenediamine tetra-acetic acid and its salts used as sequestering agents; spec. one containing sequestered iron for use on iron-deficient soils.
1949Official Gaz. (U.S. Patent Office) 8 Feb. 320/2 Alrose Chemical Co., Inc., Cranston, R.I... Alro Sequestrene... Claims use since Jan. 16, 1948. 1949Agric. Chemicals IV. iv. 73/2 ‘Sequestrene’, unlike the polyphospates, is compatible with cationic surface-active agents. 1951Proc. Soc. Exper. Biol. & Med. LXXVI. 619/1 Four Sequestrenes are available at present, Sequestrene AA (the free acid), SNA 2 (di-sodium salt), SNA 3 (trisodium salt) and SNA 4 (tetrasodium salt). 1958Times 4 Oct. 9/5 The green leaves become pale and chlorotic. There may be several reasons for this condition but nearly always application of sequestrene compound..will effect a quick..cure. 1965Listener 1 July 25/3 Sequestrenes..are now widely sold for application to plants suffering from an iron deficiency. 1977Vole No. i. 34/3 Rugosas..may need sequestrene if there is an excess of lime. |