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Environmental fate & pathways

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1,4 -Butynediol (B3D) was determined to be readily biodegradable in an OECD 301E guideline study (Hüls AG 1984) and, in an OECD 302 B guideline study (BASF, 1977), B3D degraded rapidly and completely such that it can be classified as readily biodegradable.