Typical usage rate: 0.2 - 3% Appearance: White to off-white powder with a mild odor pH: 7.0 - 8.5 Solubility: Soluble in water (154g/l), mix well, allow time for lumps to dissolve
Magnesium Ascorbyl Phosphate (MAP) may discolor in formulations with a pH below 6, so is best used in products with a final formulation pH between 6.0 - 7.0.
The solubility of MAP in water is 154g/l at 25C/77F (that's at most 15.4%)MAP is stable at 80C/176F for up to 20 hours; this means that it should withstand heating to this temperature for short periods in formulations without a problem. Therefore, it can be added to the water phase prior to heating.
You can also predisperse it in a small amount of distilled water and add at the end of the formulation process.If you're having trouble dissolving MAP in water, warming the solution to about 40°C (104°F) will help.