2-5-hexanedione (CAS#110-13-4 )

Molecular Formula	C6H10O2
Molar Mass	114.14
Density	0.973 g/mL at 25 °C (lit.)
Melting Point	-6–5 °C (lit.)
Boling Point	191 °C (lit.)
Specific Rotation(α)	n20/D 1.425 (lit.)
Flash Point	174°F
Water Solubility	miscible
Solubility	It can be miscible with water and ethanol ether, not with hydrocarbon solvents.
Vapor Presure	0.43 mm Hg ( 20 °C)
Appearance	Transparent light brown liquid
Color	Clear yellow to brown
Merck	14,71
BRN	506525
PH	6.1 (10g/l, H2O, 20℃)
Storage Condition	Store below +30°C.
Stability	Stable. Incompatible with strong bases, strong reducing agents, strong oxidizing agents. Flammable.
Explosive Limit	1.5%(V)
Refractive Index	n20/D 1.425(lit.)
MDL	MFCD00008792
Physical and Chemical Properties	Colorless liquid. Melting Point -5.5 ℃, boiling point 194 ℃(100.5kPa),89 ℃(3.33kPa), relative density 0.9737(20/4 ℃), refractive index 1.4421. Can be miscible with water, ethanol, ether. It gradually turned yellow after long-standing.

Product Detail

Risk Codes	R36/38 – Irritating to eyes and skin. R48/20/21/22 - R36/37/38 – Irritating to eyes, respiratory system and skin.
Safety Description	S23 – Do not breathe vapour. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 – Wear suitable protective clothing and gloves. S37/39 – Wear suitable gloves and eye/face protection
WGK Germany	2
RTECS	MO3150000
FLUKA BRAND F CODES	8
TSCA	Yes
HS Code	29141990
Toxicity	LD50 orally in rats: 2.7 g/kg (Smyth, Carpenter)