| 摘要 |
<p>A process for the manufacture of normal lead 2:4-dinitroresorcinate in a granular free-flowing form comprises interacting at an elevated temperature, e.g. 50-100 DEG C. a solution containing 2:4-dinitroresorcinol and sufficient alkali, e.g. sodium or potassium or magnesium hydroxide to give a pH value between about 3.3 and 6.6 with a solution containing a quantity of a soluble lead, less than the stoichiometric quantity to convert the 2:4-dinitroresorcinol salt, to normal lead 2:4-dinitroresorcinate, whereby the latter is precipitated as a mixture of colloidal and crystalline forms, the colloidal form being present in small proportion and acting as a binder for the crystalline form. Examples are given.</p> |
