Aqueous solution containing in the range of from 60.5 to 75% by weight of a mixture of trialkalimetal salts of the L- and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 3 to 97%, wherein said trialkali metal salts have the general formula (I) [CH.sub.3—CH(COO)—N(CH.sub.2—COO).sub.2]K.sub.3-xNa.sub.x (I) wherein x is in the range of from zero to 2.9.

Aqueous solution containing in the range of from 60.5 to 75% by weight of a mixture of trialkalimetal salts of the L- and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 3 to 97%, wherein said trialkali metal salts have the general formula (I) [CH.sub.3—CH(COO)—N(CH.sub.2—COO).sub.2]K.sub.3-xNa.sub.x (I) wherein x is in the range of from zero to 2.9.

Aqueous solution containing in the range of from 60.5 to 75% by weight of a mixture of trialkalimetal salts of the L- and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 3 to 97%, wherein said trialkali metal salts have the general formula (I) [CH.sub.3—CH(COO)—N(CH.sub.2—COO).sub.2]K.sub.3-xNa.sub.x (I) wherein x is in the range of from zero to 2.9.

Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, as described herein. In particular, the present disclosure describes a process for the production of a nitrile intermediate by reacting a tetra-amino compound with an aldehyde and a hydrogen cyanide to form the nitrile intermediate. The nitrile intermediate may then be further processed to produce the chelators at a high yield and/or a high purity.

Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, as described herein. In particular, the present disclosure describes a process for the production of a nitrile intermediate by reacting a tetra-amino compound with an aldehyde and a hydrogen cyanide to form the nitrile intermediate. The nitrile intermediate may then be further processed to produce the chelators at a high yield and/or a high purity.

Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, are described herein. In particular, the present disclosure describes a process for the production of a nitrile intermediate by reacting a tetra-amino compound with an aldehyde and a hydrogen cyanide to form the nitrile intermediate. The nitrile intermediate may then be further processed to produce the chelators at a high yield and/or a high purity.

Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, are described herein. In particular, the present disclosure describes a process for the production of a nitrile intermediate by reacting a tetra-amino compound with an aldehyde and a hydrogen cyanide to form the nitrile intermediate. The nitrile intermediate may then be further processed to produce the chelators at a high yield and/or a high purity.

Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, are described herein. In particular, the present disclosure describes a process for the production of a nitrile intermediate at a high yield and/or purity. This process includes reacting a dinitrile compound with an aldehyde and a hydrogen cyanide to form the nitrile intermediate. The nitrile intermediate may then be further processed to produce the chelators at a high yield and/or a high purity.

Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, are described herein. In particular, the present disclosure describes a process for the production of a nitrile intermediate at a high yield and/or purity. This process includes reacting a dinitrile compound with an aldehyde and a hydrogen cyanide to form the nitrile intermediate. The nitrile intermediate may then be further processed to produce the chelators at a high yield and/or a high purity.

Provided is a method for producing glycine, in which on synthesizing glycine from glycinonitrile, glycine can be obtained in a higher yield than that in the conventional method. The present invention relates to a method for producing glycine, including allowing glycinonitrile and water to react with each other in the presence of a cerium compound, optionally adding ammonia thereto, to obtain glycine.