Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity
Home > 3,5,3',4'-Tetrahydroxy-7-methoxyflavone > 3,5,3',4'-Tetrahydroxy-7-methoxyflavone(90-19-7)

3,5,3',4'-Tetrahydroxy-7-methoxyflavone(90-19-7)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity

Product Identification

Product Name
3,5,3',4'-Tetrahydroxy-7-methoxyflavone
Synonyms
2-(3,4-Dihydroxyphenyl)-3,5-dihydroxy-7-methoxy-4H-1-benzopyran-4-one
3,3',4',5-Tetrahydroxy-7-methoxyflavone
7-Methoxyquercetin

7-O-Methylquercetin
Quercetin 7-methyl ether
CAS
90-19-7
Formula
C16H12O7
Molecular Weight
316.27
EINECS
201-974-1
RTECS
LK8748000
RTECS Class
Mutagen
Merck
12,8337
Beilstein/Gmelin
47741
Beilstein Reference
5-18-05-00495

Physical and Chemical Properties

Appearance
light yellow powder
Solubility in water
Insoluble
Melting Point
248 - 250
Vapor Pressure
1E-16 (25 C)
pKa/pKb
6.73 (pKa)
Usage
Has been used for dyeing wool and cotton.
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 at 2-8 C

Hazards Identification

Inhalation
Material is irritating to mucous membranes and upper respiratory tract. May be harmful if inhaled.
Skin
Causes skin irritation. May be harmful if absorbed through the skin.
Eyes
Causes eye irritation.
Ingestion
May be harmful if swallowed.
Hazards
Emits toxic fumes under fire conditions.
EC Risk Phrase
36/37/38
EC Safety Phrase
26 36/37

Exposure Controls/Personal Protection

Personal Protection
Compatible chemical-resistant gloves.
Respirators
Government approved respirator.
Exposure Effects
Irritant. Irritating to eyes, respiratory system and skin.

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

Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide.
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