Product Identification

Product Name

5,4'-Dihydroxy-7-methoxyisoflavone

Synonyms

4',5-Dihydroxy-7-methoxyisoflavone
5-Hydroxy-3-(4-hydroxyphenyl)-7-methoxy-4-benzopyrone
5-Hydroxy-3-(4-hydroxyphenyl)-7-methoxychromen-4-one

CAS

552-59-0

Formula

C16H12O5

Molecular Weight

284.27

EINECS

209-018-5

RTECS

DJ3100050

RTECS Class

Drug

Merck

13,8001

Beilstein/Gmelin

292155

Beilstein Reference

5-18-04-00595

Physical and Chemical Properties

Appearance

Creamy white crystalline powder.

Solubility in water

Insoluble

Melting Point

240

Vapor Pressure

1E-12 (25 C)

pKa/pKb

6.91 (pKa)

Usage

Isoflavone.

Refractive Index

 

First Aid Measures

Ingestion

If swallowed, wash out mouth with water provided person is conscious. Call a physician.

Inhalation

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Skin

In case of contact, immediately wash skin with soap and copious amounts of water.

Eyes

In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes.

Handling and Storage

Storage

Keep tightly closed. Store in a cool dry place.

Hazards Identification

Inhalation

Material may be irritating to mucous membranes and upper respiratory tract.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

Hazards

Emits toxic fumes under fire conditions.

EC Safety Phrase

22 24/25

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles.

Respirators

Government approved respirator.

Fire Fighting Measures

Fire Fighting

Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Accidental Release Measures

Small spills/leaks

Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, Carbon dioxide.