Not a standard perfumery raw material — tert-butyl isocyanate is a small, highly reactive isocyanate with an acrid, sharply pungent, chemical odor reminiscent of other low-molecular-weight isocyanates. It is lachrymatory and irritating rather than pleasantly fragrant, and would not normally be used in fine fragrance.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 184.
Colorless liquid.
The author is of the opinion that it smells very unpleasant, pungent and that it is a lachrymator.
Produced from Potassium cyanate plus Diteriary-butylsulfate with Sodium carbonate in aqueous solution.