| 摘要 |
A particulate detergent which comprises 5 to 50 wt.% phosphate builder, 5 to 40 wt.% anionic surfactant, and 1 to 30 wt.% nonionic surfactant and has an average particle diameter of 150 to 500 mu , a bulk density of 500 g/L or higher, and a flow time of 10 seconds or shorter, wherein the particulate detergent comprises detergent particles each capable of releasing, from inner parts thereof, bubbles having a diameter of at least one-tenth the particle diameter during dissolution in water and has a solubility as calculated with equation (1) of 90% or higher. Since the particulate detergent has enhanced solubility and flowability, it can have improved suitability for laundering by hand. Equation (1) Solubility (%) = [1-(T/S)]x100 S: Amount of added particles for detergent addition (g) T: Dry amount of residue on sieve after stirring (g).
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