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2-Methyl-3-butenenitrile (CAS N°16529-56-9) is a clear yellow liquid at ambient temperature. It decomposes upon heating.

The substance is less dense than water, with a significant solubility of about 29 g/L. It is expected to have volatility potential. No bioaccumulation is anticipated.

With regard to physical hazards, it is classified as flammable.