Toxicity by subcutaneous injection

III) was very much less toxic than (II). This applied to subcutaneous as well as to inhalation experiments. By subcutaneous injection the l.d. 50 of (III) for mice was ca. 160 mg./kg. This close analogy between the two types of compound cannot, however, be pressed too far. The toxicities by subcutaneous injection into mice of other hitherto undescribed substituted phosphorodiamidic fluorides, are given on p. 89. 

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