Lab Test Results: Tear Gas Triggers Death

The results of laboratory tests confirmed that there were other components in the tear gas at the Kanjuruhan Stadium, Malang, East Java.

KOMPAS/DEFRI WERDIONO

Banners demanding to thoroughly investigate the Kanjuruhan tragedy are still plastered at a number of points in the Kanjuruhan Stadium area, Malang, East Java, on Thursday (20/10/2022).

JAKARTA, KOMPAS – The Kompas daily investigation team obtained two documents from laboratory testing of tear-gas samples fired by police at Kanjuruhan Stadium after the Arema FC match against Persebaya Surabaya at the BRI Liga 1 Indonesia on Saturday (1/10/2022). The results of the tests in these two laboratories revealed that apart from the CS compound, which is the main component of tear gas, at least four other compounds were found.

The results of a laboratory test at a state university in East Java found that the main component of tear gas was O-chlorobenzylidene malononitrile as much as 49.6 percent. This compound is known as CS. However, there were four co-components found in the decomposition of CS, namely 2-chlorobenzaldehyde (36.5 percent), 0-chloropropylbenzene (11.6 percent), benzene (1.2 percent) and benzyl dichloride or p-Chlorobenzyl chloride (1.1 percent).