| 摘要 |
The reducing agent consists of salts sulphurous acid and dithionous acid pref. 1/6 sodium sulphite, 1/6 sodium bisulphite and 2/3 sodium dithionite, and the detergents pref. consist of 25-50% (by. wt.) of reducing agent, 25-50% of a soluble, completely hydrolysed starch and 0.05-0.15% of an optical brightening agent. Uses are in household washing. |
