Sodium methyl glycine-N,N-diacetic acid compound, process to prepare it and use thereof
US10829719B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Jul 3, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Jul 3, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C229/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A solid composition, methods for preparing and using the composition, and a rehydrated crystal are disclosed. An exemplary solid composition contains at least about 2 wt % of methyl glycine-N,N-diacetic acid trisodium salt of crystal type III, based on the total weight of crystalline methyl glycine-N,N-diacetic acid trisodium salt compounds, wherein the crystal type III is the form of a crystal, comprising a crystalline modification characterized by the reflections enlisted below when analyzed with X-ray diffraction analysis using Cu Kα radiation:
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