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
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m-Dithiane(505-23-7)

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 Transport Information

Product Identification

Product Name
m-Dithiane
Synonyms
1,3-Dithiacyclohexane
m-Dithiane
CAS
505-23-7
Formula
C4H8S2
Molecular Weight
120.24
EINECS
208-006-7
RTECS
JO5070000
RTECS Class
Drug; Mutagen
Beilstein/Gmelin
102534
Beilstein Reference
5-19-01-00013

Physical and Chemical Properties

Appearance
Yellow needles.
Solubility in water
Soluble
Melting Point
51 - 54
Boiling Point
207 - 208
Vapor Pressure
0.6 (25 C)
Density
1.36 g/cm3 (25 C)
pKa/pKb
31(at 25℃) (pKa)
Partition Coefficient
.94
Heat Of Vaporization
41.4 kJ/mol
Heat Of Combustion
-3856 kJ/mol
Usage
Used as a protecting group of a carbonyl-containing compound due to its inertness to many conditions.
Refractive Index
1.5981 (25 C)

First Aid Measures

Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Ingestion
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 immediately.

Handling and Storage

Storage
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Ingestion
The toxicological properties of this substance have not been fully investigated.
Inhalation
Inhalation of dust may cause respiratory tract irritation.
Skin
No information regarding skin irritation and other potential effects was found.
Eyes
Dust may cause mechanical irritation.
EC Safety Phrase
S 22 24/25
UN (DOT)
1325

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.
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.

Fire Fighting Measures

Flash Point
90
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. 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 appropriate foam.
Fire Potential
Flammable/combustible material. May be ignited by friction, heat, sparks or flames.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code
3
Incompatibilities
Oxidizing agents, strong bases.
Stability
Stable under normal temperatures and pressures.
Decomposition
Carbon monoxide, oxides of sulfur, carbon dioxide, hydrogen sulfide.
Combustion Products
Fire may produce irritating and/or toxic gases.

Transport Information

UN Number
1325
Hazard Class
4.1
Packing Group
II; III
HS Code
2934 99 90
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