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 Transport Information
Home > 5,5-Dimethyl-1,3-cyclohexanedione > 5,5-Dimethyl-1,3-cyclohexanedione(126-81-8)

5,5-Dimethyl-1,3-cyclohexanedione(126-81-8)

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 Transport Information

Product Identification

Product Name
5,5-Dimethyl-1,3-cyclohexanedione
Synonyms
5,5-Dimethyl-1,3-cyclohexanedione
5,5-Dimethylcyclohexane-1,3-dione
5,5-Dimethyldihydroresorcinol
Cyclomethone
Dimedon
Dimedone
CAS
126-81-8
Formula
C8H12O2
Molecular Weight
140.18
EINECS
204-804-4
RTECS
GV0345000
RTECS Class
Other
Merck
13,3268
Beilstein/Gmelin
471489
Beilstein Reference
4-07-00-01999

Physical and Chemical Properties

Appearance
Light yellow - beige - white crystalline powder.
Solubility in water
Very soluble
Boiling Point
234
Vapor Pressure
0.06 (25 C)
pKa/pKb
5.32 (pKa)
Partition Coefficient
.15
Heat Of Vaporization
47.0 kJ/mol
Heat Of Combustion
-4380 kJ/mol
Usage
For the separation and identification of aldehydes.

First Aid Measures

Ingestion
Get medical aid. Wash mouth out with water.
Inhalation
Remove from exposure to fresh air immediately.
Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
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
Wash thoroughly after handling. Avoid contact with eyes, skin, and clothing. Do not breathe dust, vapor, mist, or gas.

Hazards Identification

Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed.
Inhalation
May cause respiratory tract irritation. May be harmful if inhaled.
Skin
May cause skin irritation. May be harmful if absorbed through the skin.
Eyes
May cause eye irritation.
EC Safety Phrase
S 22 24/25

Exposure Controls/Personal Protection

Personal Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
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.
Poison Class
4

Fire Fighting Measures

Flash Point
85
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. 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
Oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Transport Information

HS Code
2914 29 00
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