Product Identification

Product Name

4-Methylbenzenesulfonic acid ethyl ester

Synonyms

Benzenesulfonic acid, 4-methyl-, ethyl ester
Ethyl 4-methylbenzenesulfonate
Ethyl tosylate
Toluene-4-sulfonic acid ethyl ester

CAS

80-40-0

Formula

C9H12O3S

Molecular Weight

200.26

EINECS

201-276-7

RTECS

XT6825000

RTECS Class

Tumorigen; Mutagen

Merck

13,3889

Beilstein/Gmelin

611213

Beilstein Reference

4-11-00-00248

Physical and Chemical Properties

Appearance

White crystals.

Solubility in water

Insoluble

Melting Point

30 - 32

Boiling Point

158

Vapor Pressure

.45

Density

1.166 g/cm3 (16 C)

Usage

Plasticizer for cellulose acetate, ethylating agent.

Vapor Density

8.09

Refractive Index

1.5131 (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

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and 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.

Handling and Storage

Storage

Refrigerator (approx 4 C). Keep containers tightly closed. Store in a cool, dry 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. Use and store under nitrogen. Use only in a chemical fume hood. Do not breathe vapors.

Hazards Identification

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed.

Inhalation

May cause respiratory tract irritation. May cause irritation of the mucous membranes.

Skin

May cause skin irritation.

Eyes

Causes mild eye irritation.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 36/37/38 40

EC Safety Phrase

S 26 36/37/39

UN (DOT)

2810

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.

Poison Class

3

Fire Fighting Measures

Flash Point

157

Autoignition

500

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

Combustible material: may burn but does not ignite readily.

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. Provide ventilation.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong bases, strong oxidizing agents.

Decomposition

Hydrogen chloride, carbon monoxide, oxides of sulfur, carbon dioxide, chloride fumes.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2810

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2904 10 00