It will cover the 48 mile engagement envelope of an S-300 (24 miles each way), in 38 seconds..,,
Think about this. If you're intercepting a Mach 6 target with a missile whose peak speed is Mach 6, the only geometry that works is effectively a head-on collision. If the target passes even a few miles to either side of the launcher, it will be safe. If it gets within a few miles of the launcher, it's safe - a missile will not have time to climb to its altitude. If it gets past the launcher at all, it is absolutely safe.
The S-300 missile operator will realistically have a window of perhaps less than 10 seconds in which a launch against an approaching Mach 6 target at altitude can put the missile in the path of the target. His best chance would be to launch early, before the target is in engagement range, lofting his missile higher than the target so that it will have speed to manuever with on the way down. Very few air-to-surface systems support this kind of "loitering" engagement, however.
BTW, read the specs of weapons systems - particularly those not tried in combat - with a more critical eye than the third-world potential customers they are marketed to. Iraq bought vast quantities of sexy Soviet air defense technology and French combat aircraft in the '70s and '80s; it's all so much scrap metal now.