- 5-Hydroxypentanoic acid lactone
Clear yellow liquid.
Registry Numbers and Inventories.
S 26 39
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
228 - 230
Vapor pressure, mmHg
0.13 (25 C)
1.0988 g/cm3 (20 C)
Solubility in water
1.4503 (20 C)
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Heat of combustion
Hazards and Protection.
Store in a cool, dry place. Store in a tightly closed container. Refrigerator (approx 4 C).
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron.
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.
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Provide ventilation.
Strong oxidizing agents.
Carbon monoxide, carbon dioxide.
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.
May cause irritation of the digestive tract.
May cause respiratory tract irritation.
May cause skin irritation.
Causes eye irritation. May cause eye injury.
Get medical aid. Wash mouth out with water.
Remove from exposure to fresh air immediately.
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.