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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Thiomorpholine(123-90-0)

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
Thiomorpholine
Synonyms
1,4-Thiazane
1-Thia-4-azacyclohexane
Parathiazan
Tetrahydro-1,4-thiazine
Thiamorpholine
CAS
123-90-0
Formula
C4H9NS
Molecular Weight
103.18
EINECS
204-660-2
Merck
12,9435
Beilstein/Gmelin
102550
Beilstein Reference
4-27-00-00636

Physical and Chemical Properties

Appearance
Clear, colorless liquid. With a stench.
Solubility in water
Very soluble
Boiling Point
169
Vapor Pressure
1.5 (25 C)
Density
1.0882 g/cm3 (20 C)
pKa/pKb
4.87 (pKb)
Partition Coefficient
.17
Heat Of Vaporization
40.6 kJ/mol
Vapor Density
3.56
Refractive Index
1.5384 (20 C)

First Aid Measures

Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. Do not use mouth-to-mouth respiration if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Handling and Storage

Storage
Keep container closed when not in use. Corrosives area. Do not expose to air. Store under nitrogen. Store in a cool, dry area away from incompatible substances.
Handling
Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not get on skin or in eyes. Do not ingest or inhale. Use with adequate ventilation. Store protected from air. Use and store under nitrogen. Use only in a chemical fume hood. Discard contaminated shoes.

Hazards Identification

Inhalation
Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects. May cause nausea, headache, and vomiting.
Skin
Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
Eyes
Causes eye burns. May cause chemical conjunctivitis and corneal damage.
Ingestion
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause systemic effects. May cause nausea, headache, and vomiting.
Hazards
Contact with metals may evolve flammable hydrogen gas.
EC Risk Phrase
R 34
EC Safety Phrase
S 26 36/37/39 45
UN (DOT)
1760

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 and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Exposure Effects
Effects may be delayed.

Fire Fighting Measures

Flash Point
60
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, dry chemical, chemical foam, or alcohol-resistant foam.
Fire Potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Cover with an activated carbon adsorbent and place into a closed container for disposal. Provide ventilation. Place under an inert atmosphere.

Stability and Reactivity

Stability
Stable under normal temperatures and pressures. Air sensitive Volatile in steam.
Incompatibilities
Strong oxidizing agents, strong bases, air.
Decomposition
Nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
1760
Hazard Class
8
Packing Group
I; II; III
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