1 4 Butynediol

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Product: 1 4 Butynediol

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1,4-Butynediol is an organic compound that is an alkyne and a diol. This yellow crystalline solid is soluble in water and ethanol.

1,4-Butynediol[1]IdentifiersPropertiesHazards

IUPAC name[hide]But-2-yne-1,4-diol
Other names[hide]Butynediol2-Butyne-1,4-diol1,4-Dihydroxy-2-butyne
CAS number	110-65-6 Y
ChemSpider	7775 Y
KEGG	C02497 Y
ChEBI	CHEBI:16413 Y
Jmol-3D images	Image 1
SMILES[show]OCC#CCO
InChI[show]InChI=1S/C4H6O2/c5-3-1-2-4-6/h5-6H,3-4H2 YKey: DLDJFQGPPSQZKI-UHFFFAOYSA-N Y InChI=1/C4H6O2/c5-3-1-2-4-6/h5-6H,3-4H2Key: DLDJFQGPPSQZKI-UHFFFAOYAT
Molecular formula	C4H6O2
Molar mass	86.09 g/mol
Density	1.2 g/cm³
Melting point	52-55 °C
Boiling point	238 °C
NFPA 704

1,4-Butynediol can be produced in the Reppe synthesis, where formaldehyde and acetylene are the reactants:

2 CH2O + HCCH → HOCH2CCCH2OH

Several patented production methods use copper bismuth catalysts coated on an inert material. The normal temperature range for the reaction is 90°C up to 150°C, depending on the pressure used for the reaction which can range from 1 to 20 bar.[2]

[edit] Applications

1,4-Butynediol is a precursor to 1,4-butanediol. It is also used in the manufacture of plant protection agents, pesticides, textile additives, corrosion inhibitors, platicizers, synthetic resins, and polyurethanes.[3] It is the major raw material of vitamin B6.[4] It is also used for brightening, preserving, and inhibiting nickel plating.

[edit] Safety

1,4-Butynediol is corrosive and irritates the skin and eyes.[3]

1 4 Butynediol