1,4-Butynediol (but-2-yne-1,4-diol) is but-2-yne substituted by hydroxy groups at positions 1 and 4. It is a white to yellow solid that is very soluble in ethanol, acetone and methanol. It is used as an intermediate, a corrosion inhibitor, an electroplating brightener and a polymerisation accelerator. Its main application is hydrogenation to butanediol and butenediol.
Full specification
- Molecular formula
- C4H6O2
- Appearance
- White to yellow solid
- Synonyms
- but-2-yne-1,4-diol · 2-butyne-1,4-diol
Compliance & regulatory
Region: EU — Chemotto S.r.l., Milano
- REACH-aligned supply
- CLP-labelled
REACH REACHRegistration, Evaluation, Authorisation and Restriction of Chemicals — the EU chemicals regulation (EC 1907/2006). CLP CLPClassification, Labelling and Packaging — the EU regulation (EC 1272/2008) for hazard communication. SVHC SVHCSubstance of Very High Concern — flagged on the REACH Candidate List for possible authorisation or restriction.
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