Acetoin

Melting point :15 °C (monomer)
Boiling point :148 °C(lit.)
Density :1.013 g/mL at 25 °C(lit.)
vapor pressure :86hPa at 20℃
refractive index :n20/D 1.417(lit.)
FEMA :2008 | ACETOIN
Flash point :123 °F
storage temp. :2-8°C
solubility :All forms are miscible with water, alcohol, Propylene glycol, Glycerine and common flavor materials. Poorly soluble in hydrocarbons.
pka :13.21±0.20(Predicted)
form :Liquid (Monomer) or Powder or Crystals (Dimer)
color :Pale yellow to green-yellow or white to yellow
Odor :Intensely creamy-fatty-buttery, penetrating odor, yet milder and less “quinone’’-like than Diacetyl, not as sharp or volatile. Pleasant in extreme dilution.
Odor Type :buttery
biological source :synthetic
Water Solubility :H2O: 0.1g/mL, clear
Merck :14,64
JECFA Number :405
BRN :385636
Henry's Law Constant :3.1×10⁰ mol/(m³Pa) at 25℃, Wu et al. (2022)
Stability :Hygroscopic
Major Application :flavors and fragrances
Cosmetics Ingredients Functions :PERFUMING
InChI :1S/C4H8O2/c1-3(5)4(2)6/h3,5H,1-2H3
InChIKey :ROWKJAVDOGWPAT-UHFFFAOYSA-N
SMILES :CC(O)C(C)=O
LogP :0.1 at 25℃
CAS DataBase Reference :513-86-0(CAS DataBase Reference)
NIST Chemistry Reference :2-Butanone, 3-hydroxy-(513-86-0)
EPA Substance Registry System :2-Butanone, 3-hydroxy- (513-86-0)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. P242 Use only non-sparking tools. P243 Take precautionary measures against static discharge. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313 IF SKIN irritation occurs: Get medical advice/attention. P337+P313 IF eye irritation persists: Get medical advice/attention. P370+P378 In case of fire: Use … for extinction. P403+P235 Store in a well-ventilated place. Keep cool. P501 Dispose of contents/container to..…