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115-19-5

Name 3-Methyl butynol
CAS 115-19-5
EINECS(EC#) 204-070-5
Molecular Formula C5H8O
MDL Number MFCD00004467
Molecular Weight 84.12
MOL File 115-19-5.mol
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Chemical Properties

Appearance colourless to light yellow liquid
Melting point  3 °C
Boiling point  104 °C(lit.)
density  0.868 g/mL at 25 °C(lit.)
vapor pressure  15 mm Hg ( 20 °C)
refractive index  n20/D 1.42(lit.)
Fp  77 °F
storage temp.  Flammables area
solubility  Fully miscible.
form  Powder or Crystals
pka 13.34±0.29(Predicted)
color  White to yellow-beige to brown
PH 7 (H2O, 20℃)
Stability: Stable. Flammable. Incompatible with strong oxidizing agents.
explosive limit 1.8-16%(V)
Water Solubility  miscible
Detection Methods GC,NMR
Merck  14,6034
BRN  635746
Uses
Stabilizer in chlorinated solvents, viscosity reducer and stabilizer, electroplating brightener, intermediate.
CAS DataBase Reference 115-19-5(CAS DataBase Reference)
NIST Chemistry Reference 3-Butyn-2-ol, 2-methyl-(115-19-5)
EPA Substance Registry System 115-19-5(EPA Substance)
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Safety Data

Hazard Codes  Xn
Risk Statements 
R10:Flammable.
R22:Harmful if swallowed.
R41:Risk of serious damage to eyes.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S39:Wear eye/face protection .
S16:Keep away from sources of ignition-No smoking .
RIDADR  UN 1987 3/PG 2
WGK Germany  1
RTECS  ES0810000
Autoignition Temperature 662 °F
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29052990
Toxicity
LD50 orally in Rabbit: 1420 mg/kg LD50 dermal Rat > 2000 mg/kg

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