(R)-(-)-massoia lactone
[CAS# 51154-96-2]

Identification

• Classification: Flavors and spices >> Synthetic spice >> Carboxylic acid and ester perfume >> Aromatic carboxylic acid ester
• Name: (R)-(-)-massoia lactone
• Synonyms: Cocolactone;(2R)-2-pentyl-2,3-dihydropyran-6-one
• Molecular Formula: C₁₀H₁₆O₂
• Molecular Weight: 168.23
• CAS Registry Number: 51154-96-2
• EC Number: 610-624-0
• FEMA: 3744
• SMILES: CCCCC[C@@H]1CC=CC(=O)O1

Properties

• Solubility: 614.3 mg/L (25 ºC water)
• Density: 1.0±0.1 g/cm³, Calc.^*
• Index of Refraction: 1.458, Calc.^*
• Melting point: 19.84 ºC
• Boiling Point: 285.21 ºC, 287.0±19.0 ºC (760 mmHg), Calc.^*
• Flash Point: 115.8±18.9 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

Safety Data

• Hazard Symbols: GHS07 Warning
• Hazard Statements: H227-H315-H317-H319
• Precautionary Statements: P210-P261-P280-P302+P352+P333+P313-P305+P351+P338+P337+P313

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Skin sensitization	Skin Sens.	1	H317
Eye irritation	Eye Irrit.	2	H319
Skin sensitization	Skin Sens.	1B	H317