| 摘要 |
505,948. Oxygen-evolving compositions. HEIM, M. L. July 7, 1938, No. 20116. Convention date, July 10, 1937. [Class 90] A product for making oxygen baths consists of a mixture of an oxygen-evolving compound, e.g. sodium perborate, sodium peroxide or sodium percarbonate, with sodium lignine sulphonate as a catalyst, preferably in a proportion equal to about 8 per cent. by weight of the per-salt. |
