2-Butyne-1,4-diol manufacturers and suppliers

2-Butyne-1,4-diol suppliers

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℃

Safety Information

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

Toxicity: LD50 orally in Rabbit: 100 mg/kg

Use

Pure 2-Butyne-1,4-diol is non-explosvie. Small amounts of certain impurities-alkali hydroxides, alkaline earth hydroxides, halides-may cause explosive decomposition upon distillation. 2-Butyne-1,4-diol should not be treated with basic catalysts in the absence of a solvent at room temperature, and its stability is less with elevated temperatures. In strong acids, contamination with mercury salts can also result in violent decomposition [NFPA 491M 1991].

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