The hypergolic ignition of oxidizing agents with ethyleneglycol has been examined using a modified steel dish tester. 42 oxidants were selected from those which were known to be distributed in Tokyo district. Experiements of three types were carried out stepwise: contact of 2.5g each of two chemicals at room temperature (I) and at 100°C (II), and contact of 98% H
2SO
4 (5g) with the most exothermic binary mixture (10g) (III). Results were listed in tables and some comments were added.
The contact of ethyleneglycol with CrO
3, KMnO
4 or Na
2O
2 caused spontaneous ignition at room temperature. A bleaching agent containing calcium hypochlorite did not ignite on contact with the glycol at room temperature but a temperature rise was observed. 500g each of these chemicals ignited after about 30 seconds from the contact with each other at room temperature.
At 100°C, UO
2 (NO
3)
2 NaClO
2, AgClO
3 and (NH
4)
2CrO
7 gave the hypergolic ignition and other 19 oxidizing agents showed exothermic reactions on contact with the glycol.
The binary mixture of the glycol with the salts of chlorate, chlorite and hypochlorite and BaO
2 ignited on contact with 98% H
2SO
4. Sodium and potassium bromate did not ignite but fumed smokes in this experiments. However, bromates are known to ignite on contact with strong mineral acids in the larger scale experiment.
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