"It is time for the UN Security Council to assume responsibility... By convening immediately to reach a clear deterrent decision that ends the humanitarian tragedy," said Foreign Minister Prince Saud al-Faisal.
"We ask EU foreign ministers meeting today in Brussels (to discuss the Egyptian crisis) to have this humanitarian catastrophe as the main topic of their talks," he told AFP.
More than 650 people were killed when the Syrian army bombarded Damascus suburbs with chemical weapons today, the opposition Syrian National Coalition said.
"We were shocked to see this horrific massacre... And the use of chemical weapons that is internationally banned," said Prince Saud.
Syrian State news agency Sana said "reports on the use of chemical weapons in Ghouta are totally false. It's an attempt to prevent the UN commission of inquiry from carrying out its mission."
And the army said allegations it used chemical arms were "null, void and totally unfounded."
