Melting point :-42.8 °C
Boiling point :166 °C(lit.)
Density :0.938 g/mL at 20 °C
vapor density :4 (vs air)
vapor pressure :<1 mm Hg ( 20 °C)
refractive index :n20/D 1.423(lit.)
Flash point :132 °F
storage temp. :Store below +30°C.
solubility :Soluble in alcohol, ether (Weast, 1986), and many other solvents, particular ketones such as acetone and 2-butanone.
pka :14.57±0.29(Predicted)
form :Liquid
color :Clear colorless
Odor :Mild, pleasant.
explosive limit :1.8-6.9%(V)
Water Solubility :MISCIBLE
λmax :249nm(lit.)
Merck :14,2964
BRN :1740440
Specific Activity :25-50 mCi/mmol
Solvent :Ethanol
Concentration :0.1 mCi/ml
Henry's Law Constant :3.8×10¹ mol/(m³Pa) at 25℃, Duchowicz et al. (2020)
Dielectric constant :18.2（Ambient）
Exposure limits :TLV-TWA 240 mg/m³ (50 ppm) (ACGIH); IDLH 2100 ppm (NIOSH).
Stability :Stable. Flammable. Incompatible with strong oxidizing agents, amines, ammonia, strong acids, strong bases, alkalies, aluminium.
Cosmetics Ingredients Functions :PERFUMING
SOLVENT
FRAGRANCE Cosmetic Ingredient Review (CIR) :Diacetone Alcohol (123-42-2)
InChI :1S/C6H12O2/c1-5(7)4-6(2,3)8/h8H,4H2,1-3H3
InChIKey :SWXVUIWOUIDPGS-UHFFFAOYSA-N
SMILES :CC(=O)CC(C)(C)O
LogP :-0.09 at 20℃
Surface tension :29.44 mN/m at 303.15K
CAS DataBase Reference :123-42-2(CAS DataBase Reference)
NIST Chemistry Reference :4-Hydroxy-4-methylpentan-2-one(123-42-2)
EPA Substance Registry System :4-Hydroxy-4-methyl-2-pentanone (123-42-2)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312 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 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501 H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H371 May cause damage to organs Specific target organ toxicity, single exposure Category 2 Warning P260, P264, P270, P309+P311, P405,P501
Precautionary statements:	P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. 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. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. 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+P233 Store in a well-ventilated place. Keep container tightly closed. P403+P235 Store in a well-ventilated place. Keep cool. P405 Store locked up. P501 Dispose of contents/container to..…