1,4-Butynediol
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1,4-Butynediol is an organic compound that is an alkyne and a diol. It is a colourless, hygroscopic solid that is soluble in water and polar organic solvents. It is a commercially significant compound in its own right and as a precursor to other products.
Quick Facts Names, Identifiers ...
Names | |
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Preferred IUPAC name
But-2-yne-1,4-diol | |
Other names
Butynediol 2-Butyne-1,4-diol 1,4-Dihydroxy-2-butyne | |
Identifiers | |
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3D model (JSmol) |
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ChEBI | |
ChEMBL | |
ChemSpider |
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ECHA InfoCard | 100.003.445 |
EC Number |
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KEGG |
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PubChem CID |
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RTECS number |
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UNII | |
UN number | 2716 |
CompTox Dashboard (EPA) |
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Properties | |
C4H6O2 | |
Molar mass | 86.090 g·mol−1 |
Appearance | Colorless crystalline solid[2] |
Density | 1.11 g/cm3 (at 20 °C)[2] |
Melting point | 58 °C (136 °F; 331 K)[2] |
Boiling point | 238 °C (460 °F; 511 K)[2] |
3740 g/L[2] | |
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GHS labelling: | |
Danger | |
H301, H312, H314, H317, H331, H373 | |
P260, P261, P264, P270, P271, P272, P280, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P312, P314, P321, P322, P330, P333+P313, P363, P403+P233, P405, P501 | |
NFPA 704 (fire diamond) | |
Flash point | ~136 °C (277 °F)[2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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