2-Butyne-1,4-diol , 98% , 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
F	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