发布单位：FDA
发布文号：暂无
发布日期：暂无
生效日期：暂无
有效性状态： 
废止日期：暂无
备注：本节（a）中所指的物质可安全地用于纸和纸板制造，但应符合本节（b）和（c）中的限制条件。所列出的任何一种物质或这些物质的任何结合或搭配，均可用做螯合剂。这些物质的加入量应不大于为达到所需工艺效果的需要量，也不大于规定的任何特殊限量。
§176.150 Chelating agents used in the manufacture of paper and paperboard
The substances named in paragraph （a） of this section may be safely used in the manufacture of paper and paperboard, in accordance with the conditions prescribed in paragraphs （b） and （c） of this section:
（a） Chelating agents:
| List of substances | Limitations |
| Ammonium fructoheptonate | |
| Ammonium glucoheptonate | |
| Disodium ethylenediamine tetraacetate | |
| Pentasodium salt of diethylenetriamine pentaacetate | |
| Sodium fructoheptonate | |
| Sodium glucoheptonate | |
| Tetrasodium ethylenediamine tetra-acetate | |
| Trisodium N-hydroxyethyl ethylenediamine triacetate |
（b） Any one or any combination of the substances named is used or intended for use as chelating agents.
（c） The substances are added in an amount not greater than that required to accomplish the intended technical effect nor greater than any specific limitation, where such is provided.
