Here's a better complete overview of the topic: https://www.hrw.org/report/2009/03/25/rain-fire/israels-unla...
Edit in response to your edit: It's not the incindiary part of WP that's an issue, it's the chemical toxicity to humans and animals. Hamas has not used anything approaching chemical weapons by any definition against Israel, despite your attempt to deflect.
Hamas rockets have in fact been filled with white phosphorus, literally exactly the same substance you're talking about, and fired at Israeli cities, intentionally, in attempts to kill Israeli civilians. https://en.m.wikipedia.org/wiki/Palestinian_rocket_attacks_o...
I assume you've been misinformed, or only presented with information from a specific side. But literally both Hamas and Israel have used white phosphorous. That's not a matter of debate, it's just a fact.
International law doesn't consider WP a chemical weapon, which is why no one claims Hamas has used chemical weapons against Israel. It's also why your claim that Israel used chemical weapons against Hamas is incorrect.
One of the citations from that line on the wiki page has
> Haim Yelin, head of the Eshkol Regional Council, added: "Everyone criticized Israel for the weapons it's been using, but we must realize that the other side is using illegal weapons."
So, yes, people including Israelis claim that the use of WP is a chemical weapon and illegal.
You get how taking unexploded munitions and sending them back over is a different thing than using them originally in the first place, no?
I admit to being a bit suspicious that this quote claims anything about "chemical weapons." What the international community has criticized Hamas for, as per the wiki page, is indiscriminately firing rockets at civilian areas — which is illegal. They used white phosphorus in the rockets as well, but even prior to that, as per the wiki page they were filling rockets with TNT and explosive fertilizers, which use their chemical properties (of explosion) to kill people too. So if chemical properties of lighting on fire count as "chemical weapons" (they don't though), I think the chemical properties of TNT would suffice as well.
As per numerous [1] articles [2] and sources [3] the international community does not even consider Israel to have ever revealed owning chemical weapons (although it is suspected that they do); if white phosphorus was considered a chemical weapon, there would be no question: Israel has publicly used it, and publicly admitted to using and owning it [4]. Your claim is just incorrect.
Edit: even the Human Rights Watch article you linked disagrees with you! It criticizes Israel's use of white phosphorous because it violates international law on indiscriminate weapons use — the same laws Hamas broke with its rocket attacks — and specifically says that white phosphorus is not considered a chemical weapon. Quote:
White phosphorus is not considered a chemical weapon and is not banned per se. But like all weapons its use is restricted by the fundamental principles of international humanitarian law: it must be used in a manner that adequately distinguishes between combatants and civilians, and it may never target the latter.
I think this is the end of the discussion. Even the sources you have tried to provide contradict your claim that Israel used "chemical weapons" on Gazans.
1:https://theconversation.com/is-it-time-for-israel-to-reveal-...
2: https://foreignpolicy.com/2013/09/10/exclusive-does-israel-h...
3: https://en.m.wikipedia.org/wiki/Israel_and_weapons_of_mass_d...
You and others are obsessively focused on any collateral damage caused by Israel which is trying to defend its citizens against deliberate rocket attacks launched by terrorists from civilian population. Meanwhile, you ignore far more egregious violations by the enemies of Israel, like Syria.
You use hyperbolic and unjustified language to condemn Israel for using weapons nobody considers "chemical weapons".
This is bias, pure and simple. Some of you have been brainwashed to obsessively hate Israel. Others were Antisemitic to begin with. Either way, you are now prejudiced.
~ Peter Kaiser, spokesman for the Organisation for the Prohibition of Chemical Weapons
Yes, people consider WP a chemical weapon. It's been cited several times from several different sources from authorities on the matter.
https://www.independent.co.uk/news/world/americas/us-intelli...
I also condemn in the strongest terms the US's use of WP in urban areas which I also consider a war crime (and several others do as well).
As far as Syria or any other, why do you think I accept their chemical weapon use? But just because someone else is using chemical weapons doesn't give Israel a pass.
Edit: the entire Gaza War started with Hamas firing rockets packed with incendiary chemicals into dense Israeli urban environments. I would say many things about Hamas, but I would not say that Hamas has used banned chemical weapons against Israel. I suppose if you believe Hamas has used banned chemical weapons against Israelis, you may certainly believe Israel has done the same. But I think your definition of chemical weapons is significantly broader than international law. AFAIK neither side has done this.