化学配方数据库
| 配方类型: | MISCELLANEOUS |
| 配方说明: | Antifoam Solution |
| 配方组成: | Xylol/90.0 "Antifoam" A Compound/10.0 |
| 配制方法: | Mix well, Before using-It is adviseable to shake. The use of this 10% dispersion has the advantage that workmen are less likely to use excessive amounts. In actual use-in Laboratory work one to t wo drops from a medicine dropper will be found to be highly effective on lab cooks (resin esterification reactions) involving 2500 g. In Factory Size Cooks-500 Gal Kettles-5 c.c. (one teaspoonful) will break the foam that starts forming at about 375F on the initial up-heat. Amounts in excess of 10 parts per million are to be avoided. Amounts over this can have disastrous surface effects, such as cratering, silking, floating, etc. of organic coatings. |
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