Composition
A particulate material comprising a bleach catalyst wherein the particles of the bleach catalyst have a coating and the weight ratio of the coating to the bleach catalyst is in the range of from 10-60 wt %. The particulate material exhibits good stability.
1. A particulate material comprising a plurality of coated particles, each coated particle comprising a core comprising a bleach catalyst which is a manganese compound, wherein the core has a coating comprising citric acid or a citrate; and
the weight ratio of the coating to the bleach catalyst is in the range of 10-60 wt %.
2. The particulate material according to claim 1 , wherein the pH of the material used for the coating material is <7.
3. The particulate material according to claim 1 , wherein the bleach catalyst has an initial particle size (before coating) of less than 2000 μm.
4. The particulate material according to claim 1 , wherein at least one of the plurality of coated particle comprises an agglomerate of individual particles.
5. The solid detergent composition comprising a particulate material according to claim 1 .
6. The solid detergent composition according to claim 5 , wherein the composition comprises a tabletted composition.
7. The particulate material according to claim 3 , wherein the bleach catalyst has an initial particle size (before coating) of less than 1200 μm.
8. The particulate material according to claim 7 , wherein the bleach catalyst has an initial particle size (before coating) of less than 1000 μm.
9. The particulate material according to claim 1 , wherein the core consists essentially of the bleach catalyst.