Tetrahydro-4-methyl-2H-pyran-2-one
[CAS# 1121-84-2]

Identification

• Name: Tetrahydro-4-methyl-2H-pyran-2-one
• Synonyms: (RS)-tetrahydro-4-methylpyran-2-one; (±)-3-Methylvalerolactone; 3-Methyl-delta-valerolactone; 4-Methyltetrahydro-2H-pyran-2-one; 4-Methyltetrahydropyran-2-one; NSC 32358; beta-Methyl-delta-valerolactone
• Molecular Formula: C₆H₁₀O₂
• Molecular Weight: 114.14
• CAS Registry Number: 1121-84-2
• EC Number: 214-338-3

Properties

• Solubility: Sparingly soluble (22 g/L) (25 ºC), Calc.^*
• Density: 1.0568 g/cm³ (20 ºC)^**
• Boiling point: 119-120 ºC (20 Torr)^***
• Refractive index: 1.4500 (589.3 nm 20 ºC)^****
• Flash point: 79.8±15.9 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2019 ACD/Labs)

^** Klein, Erich; Dragoco Report (German Edition) 1969, V16(5), P63-71.

^*** de Graaff, G. B. R.; Recueil des Travaux Chimiques des Pays-Bas et de la Belgique 1958, V77, P224-34.

^**** Hudlicky, Milos; Collection of Czechoslovak Chemical Communications 1967, V32(1), P183-9.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Flammable liquids	Flam. Liq.	4	H227
Eye irritation	Eye Irrit.	2A	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335