pyrodoc Posted March 13, 2015 Share Posted March 13, 2015 Hi all, The question relates to an old time pyro who told me a formula based on orpiment. I know it's toxic. But, just wanted to ask the role of pigment ultramarine blue in a flare with other components of kno3,sulphur, charcoal and orpiment. He also said that they used citric acid for a glittering fountain formula based on kno3,sulhur, charcoal, baking soda and magnalium. Just want to know the role if any, of ultramarine blue and citric acid. Regards Link to comment Share on other sites More sharing options...
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