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2-Butyne-1,4-diol Structure

2-Butyne-1,4-diol

Chemical Properties

Melting point 54 °C
Boiling point 238 °C(lit.)
Density  1.2
vapor pressure  <0.1 mm Hg ( 55 °C)
refractive index  1.4804
Flash point 306 °F
storage temp.  Store below +30°C.
solubility  3740g/l
form  Crystalline Platelets or Flakes
pka 12.72±0.10(Predicted)
color  slightly brown
PH 4-7.5 (100g/l, H2O, 23℃)
Water Solubility  3740 g/L (20 ºC)
BRN  1071237
Exposure limits ACGIH: TWA 0.1 ppm; STEL 0.3 ppm
OSHA: TWA 0.75 ppm; STEL 2 ppm
NIOSH: IDLH 20 ppm; TWA 0.016 ppm; Ceiling 0.1 ppm
Stability Stable. Highly flammable solid. Incompatible with strong oxidizing agents, acid chlorides, acid anhydrides, strong acids, strong bases.
LogP -0.73 at 25℃
CAS DataBase Reference 110-65-6(CAS DataBase Reference)
NIST Chemistry Reference 2-Butyne-1,4-diol(110-65-6)
EPA Substance Registry System 2-Butyne-1,4-diol (110-65-6)

Safety Information

Hazard Codes  T,C
Risk Statements  21-23/25-34-43-48/22
Safety Statements  25-26-36/37/39-45-46
RIDADR  UN 2716 6.1/PG 3
WGK Germany  2
RTECS  ES0525000
23-10
Autoignition Temperature 410 °C
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29053980
Hazardous Substances Data 110-65-6(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 100 mg/kg

MSDS

Usage And Synthesis

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