Home Categories Organic Chemistry 2-Butyne-1,4-diol
A1213412

2-Butyne-1,4-diol , >99.0%(GC) , 110-65-6

Synonym(s):
1,4-Dimethoxyacetylene;2-Butyne-1,4-diol

CAS NO.:110-65-6

Empirical Formula: C4H6O2

Molecular Weight: 86.09

MDL number: MFCD00002915

EINECS: 203-788-6

Update time: 2022-07-08

PRODUCT 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)

Description and Uses

2-Butyne-1,4-diol is used as a precursor to prepare 1,4-butanediol, 2-butene-1,4-diol and mucochloric acid. It is also used in textile additives, corrosion inhibitors, plasticizers, synthetic resins and polyurethanes. It is an important raw material of vitamin B6. Further, it is used for brightening, preserving and inhibiting nickel plating. In addition, it is used in biological studies for nematocidal activity.

Safety

Symbol(GHS) 
GHS05,GHS06,GHS08
Signal word  Danger
Hazard statements  H301+H311+H331-H314-H317-H373
Precautionary statements  P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P314
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

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