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The hazardous material was identified, according to the Coast Guard, as potassium amyl xanthate, a pale-yellow powder used in the mining industry.

It’s been identified as potassium amyl xanthate, a pale-yellow powder used in the mining industry.

The fire was caused by a combustible chemical powder, potassium amyl xanthate, that’s widely used in the mining industry, officials said.

The solution may be regarded as containing the ammonium cellulose xanthate.

This liquid contains the cellulose in solution as a cellulose xanthate and on acidifying or heating the cellulose is recovered in a hydrated form.