Product Identification

Product Name

Sulfolane

Synonyms

Sulfolone
Sulphoxaline
Tetrahydrothiophene 1,1-dioxide
Tetramethylene sulfone
Thiolane 1,1-dioxide

CAS

126-33-0

Formula

C4H8O2S

Molecular Weight

120.17

EINECS

204-783-1

RTECS

XN0700000

RTECS Class

Drug; Primary Irritant

Merck

12,9128

Beilstein/Gmelin

107765

Beilstein Reference

5-17-01-00039

EC Index Number

016-031-00-8

EC Class

Harmful

Physical and Chemical Properties

Appearance

Colorless oily liquid with a weak oily odor.

Solubility in water

Soluble

Melting Point

26

Boiling Point

285

Vapor Pressure

5 (118 C)

Density

1.293 g/cm3

Partition Coefficient

-.77

Heat Of Vaporization

54.5 kJ/mol

Heat Of Combustion

-2626 kJ/mol

Usage

Selective solvent for liquid-vapor extractions.

Vapor Density

>4

Refractive Index

1.481 (20 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. 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. Get medical aid.

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.

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. 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. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

May cause irritation of the digestive tract. May be harmful if swallowed. This is a convulsant in animals. Symptoms of neruotoxicity have been observed in rats, dogs, and monkeys after ingestion, injection, inhalation or dermal application. Effects included convulsions, tremors, hyperactivity and ataxia.

Inhalation

May cause respiratory tract irritation.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

Hazards

Toxic, irritating gases may be generated in fires.

EC Risk Phrase

R 22

EC Safety Phrase

S 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 and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

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

177

Autoignition

528

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. Containers may explode in the heat of a fire. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Cool containers with flooding quantities of water until well after fire is out.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal.

Stability and Reactivity

Disposal Code

1

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide.

Combustion Products

Toxic, irritating gases may be generated in fires.

Transport Information

HS Code

2934 99 90