Product Identification

Product Name

delta-Valerolactone

Synonyms

1-Oxacyclohexan-2-one
2-Oxotetrahydropyran
5-Hydroxypentanoic acid lactone
5-Valerolactone
d-Valeryllactone
Tetrahydro-2-pyranone

CAS

542-28-9

Formula

C5H8O2

Molecular Weight

100.11

EINECS

208-807-1

Beilstein/Gmelin

106436

Beilstein Reference

5-17-09-00017

Physical and Chemical Properties

Appearance

Clear yellow liquid.

Solubility in water

Very soluble

Melting Point

-10

Boiling Point

228 - 230

Vapor Pressure

0.13 (25 C)

Density

1.0988 g/cm3 (20 C)

Partition Coefficient

-.2

Heat Of Vaporization

60.25 kJ/mol

Heat Of Combustion

-2673 kJ/mol

Refractive Index

1.4503 (20 C)

First Aid Measures

Ingestion

Get medical aid. Wash mouth out with water.

Inhalation

Remove from exposure to fresh air immediately.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.

Handling and Storage

Storage

Store in a cool, dry place. Store in a tightly closed container. Refrigerator (approx 4 C).

Handling

Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.

Hazards Identification

Ingestion

May cause irritation of the digestive tract.

Inhalation

May cause respiratory tract irritation.

Skin

May cause skin irritation.

Eyes

Causes eye irritation. May cause eye injury.

EC Risk Phrase

R 41

EC Safety Phrase

S 26 39

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures

Flash Point

112

Autoignition

390

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Provide ventilation.

Stability and Reactivity

Stability

No data.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, carbon dioxide.