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
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4-Methyl-7-(diethylamino)coumarin(91-44-1)

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
4-Methyl-7-(diethylamino)coumarin
Synonyms
(9S)-10,11-Dihydro-6'-methoxycinchonan-9-ol
10,11-Dihydroquinidine
7-(Diethylamino)-4-methyl-2H-1-benzopyran-2-one
7-(Diethylamino)-4-methylcoumarin
7-Methyl-7-(diethylamino)coumarin
C.I. 551100
Cinchonan-9-ol, 10,11-dihydro-6'-methoxy-, (9S)-
Dihydroquinidine
Fluorescent Brightener 52
Hydroconquinine
Whitefluor B
CAS
1435-55-8
CAS
91-44-1
Formula
C14H17NO2
Formula
C20H26N2O2
Molecular Weight
231.32
Molecular Weight
326.44
EINECS
202-068-9
EINECS
215-862-5
RTECS
GN6370000
RTECS
MX3016000
RTECS Class
Drug
RTECS Class
Drug; Human Data
Merck
13,4831
Beilstein/Gmelin
193303
Beilstein/Gmelin
91441
Beilstein Reference
5-18-11-00445
Beilstein Reference
5-23-13-00340

Physical and Chemical Properties

Appearance
Light tan grains. Gives bright blue-white fluorescence in very dilute solutions.
Solubility in water
Insoluble
Melting Point
169 - 170
Melting Point
71.7
Boiling Point
240 - 243 (7 torr)
Boiling Point
498
Vapor Pressure
9E-11 (25 C)
pKa/pKb
8.14 (pKb)
pKa/pKb
4.06 (pKb)
Heat Of Vaporization
80.7 kJ/mol
Usage
Antiarrhythmic medication.
Usage
Optical bleach in textile industry, in coatings for paper, labels, book covers, etc, invisible marking agent, to lighten plastics, resins, varnishes & lacquers.
Vapor Density
8

First Aid Measures

Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
Ingestion
Never give anything by mouth to an unconscious person. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Wash mouth out with water. Get medical aid if irritation or symptoms occur.
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.
Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
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. Wash clothing before reuse.
Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.

Handling and Storage

Storage
Keep tightly closed. Store in a cool dry place.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. No special precautions indicated.
Handling
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation.

Hazards Identification

Inhalation
May cause respiratory tract irritation. Low hazard for usual industrial handling. The toxicological properties of this substance have not been fully investigated.
Skin
May cause skin irritation. The toxicological properties of this material have not been fully investigated.
Eyes
May cause eye irritation. The toxicological properties of this material have not been fully investigated.
Ingestion
May cause irritation of the digestive tract. Low hazard for usual industrial handling.
Hazards
Emits toxic fumes under fire conditions.
EC Risk Phrase
20/21/22
EC Safety Phrase
36/37
EC Safety Phrase
S 22 24/25

Exposure Controls/Personal Protection

Personal Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Personal Protection
Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing.
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.
Exposure Effects
The toxicological properties of this material have not been investigated.
Exposure Effects
Toxic. Toxic by inhalation, in contact with skin and if swallowed.

Fire Fighting Measures

Flash Point
255
Autoignition
430
Fire Fighting
Extinguish using Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
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
Oxidizing agents.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide, Nitrogen oxides, Hydrogen chloride gas.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.
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