Product Identification

Product Name

2-Hydroxycyclohepta-2,4,6-trienone

Synonyms

2-Hydroxy-2,4,6-cycloheptatrien-1-one
2-Hydroxycyclohepta-2,4,6-trien-1-one
2-Hydroxytropone
a-Tropolone
Purpurocatechol

CAS

533-75-5

Formula

C7H6O2

Molecular Weight

122.12

EINECS

208-577-2

RTECS

GU4075000

RTECS Class

Drug

Beilstein/Gmelin

1904978

Beilstein Reference

4-08-00-00159

Physical and Chemical Properties

Appearance

Light yellow-cream solid.

Solubility in water

Soluble

Melting Point

48 - 50

Boiling Point

66 - 67 (0.1 torr)

pKa/pKb

6.90 (pKa)

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.

Eyes

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

Handling and Storage

Storage

Store in a cool, dry place. Store in a tightly closed container.

Handling

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

Hazards Identification

Ingestion

The toxicological properties of this substance have not been fully investigated.

Inhalation

May cause respiratory tract irritation.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

EC Safety Phrase

S 22 24/25

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

A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.

Fire Fighting Measures

Flash Point

>112

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

Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity

Disposal Code

3

Stability

No data.

Incompatibilities

Strong oxidizing agents, moisture.

Decomposition

Carbon monoxide, carbon dioxide.

Transport Information

HS Code

2914 40 90