delta-Valerolactone CAS NO.542-28-9

Due to its good application flexibility, lower biological toxicity, more derivative compounds, easy polymerization and greatly increase the viscosity of coatings and other characteristics, delta-valerolactone is widely used in polyesters, polyurethanes, special solvents, and coatings.

delta-Valerolactone CAS 542-28-9  IN Stock  Tetrahydro-2H-2-pyranone 542-28-9

542-28-9 CAS 542-28-9  highly quality and immedaite delivery Acetyl-L-carnitine chloride

Name: delta-Valerolactone

Synonyms: delta-Valerolactone, 2-Oxotetrahydro-2H-pyran;Tetrahydro-2H-pyran-2-one 99%;delta-Valerolactone, 99% 50GR;^d-Valerolactone, 98%, May contain polyMer;delta-Valerolactone technical grade;δ-Valerolactone, 98.5%, 98.5%;δ- valerolactone (cyclopentyl lactone);delta-Valerolactone, may contain polymer: distil to remove

CAS: 542-28-9

MF: C5H8O2

MW: 100.12

EINECS: 208-807-1

Product Categories: fine chemicals;Functional Materials;-;Lactones & Lactides (for High-Performance Polymer Research);Reagent for High-Performance Polymer Research

Mol File: 542-28-9.mol

delta-Valerolactone Structure

delta-Valerolactone Chemical Properties

Melting point  -13 °C

Boiling point  230 °C

density  1.105 g/mL at 20 °C

vapor density  3.45 (vs air)

refractive index  n20/D 1.457(lit.)

Fp  212 °F

storage temp.  2-8°C

form  Liquid

color  Clear colorless to pale yellow

Water Solubility  miscible

BRN  106436

CAS DataBase Reference 542-28-9(CAS DataBase Reference)

NIST Chemistry Reference 2H-Pyran-2-one, tetrahydro-(542-28-9)

EPA Substance Registry System 2H-Pyran-2-one, tetrahydro-(542-28-9)

Safety Information

Hazard Codes  Xi

Risk Statements  41

Safety Statements  26-39

WGK Germany  3

RTECS  LU3580000

Hazard Note  Irritant/Keep Cold

TSCA  Yes

HS Code  29322090

MSDS Information

delta-Valerolactone Usage And Synthesis

Chemical Properties clear colorless to pale yellow liquid

Definition ChEBI: The simplest member of the class of delta-lactone that is tetrahydro-2H-pyran substituted by an oxo group at position 2.

Purification Methods Purify the -lactone by repeated fractional distillation. IR: max 1750 (in CS2), 1732 (in CHCl3),1748 (in CCl4) and 1733 (in MeOH) cm-1 [Huisgen & Ott Tetrahedron 6 253 1959, Linstead & Rydon J Chem Soc 580 1933, Jones et al. Can J Chem 37 2007 1959]. [Beilstein 17 H 235, 17 II 287, 17 III/IV 4169,17/9 V 17.]

delta-Valerolactone Preparation Products And Raw materials

Raw materials Cyclopentanone-->Peroxyacetic acid