Melting point :104-108°C
Boiling point :170.05°C (rough estimate)
Density :1.0795 (rough estimate)
vapor pressure :2.1hPa at 20℃
FEMA :2700 | METHYLCYCLOPENTENOLONE
refractive index :1.4532 (estimate)
Flash point :100°C
storage temp. :Store at +2°C to +8°C.
solubility :Chloroform (Slightly), Methanol (Slightly)
pka :9.21±0.20(Predicted)
color :White crystalline powder or fine crystals
Odor :at 1.00 % in dipropylene glycol. caramel maple syrup
Odor Type :caramellic
JECFA Number :418
LogP :0.4 at 25℃
CAS DataBase Reference :80-71-7(CAS DataBase Reference)
NIST Chemistry Reference :2-Cyclopenten-1-one, 2-hydroxy-3-methyl-(80-71-7)
EPA Substance Registry System :Maple lactone (80-71-7)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.