Ethyl p-toluenesulfonate

  • Ethyl tosylate
  • Toluene-4-sulfonic acid ethyl ester
  • Ethyl 4-methylbenzenesulfonate
  • Benzenesulfonic acid, 4-methyl-, ethyl ester
Formula
4-(CH3)C6H4SO3C2H5
Structure
Description
White crystals.
Uses
Plasticizer for cellulose acetate, ethylating agent.

Registry Numbers and Inventories.
CAS
80-40-0
EC (EINECS/ELINCS)
201-276-7
R 36/37/38 40
S 26 36/37/39
RTECS
XT6825000
RTECS class
Tumorigen; Mutagen
UN (DOT)
2810
Merck
13,3889
Beilstein/Gmelin
611213
Beilstein Reference
4-11-00-00248
Swiss Giftliste 1
G-7190
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C9H12O3S
Formula mass
200.26
Melting point, °C
30 - 32
Boiling point, °C
158
Vapor pressure, mmHg
0.45
Vapor density (air=1)
8.09
Density
1.166 g/cm3 (16 C)
Solubility in water
Insoluble
Surface tension
40.62 g/s2 (40 C)
Refractive index
1.5131 (20 C)

Hazards and Protection.
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.
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.
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.
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.

Fire.
Flash Point,°C
157
Autoignition, °C
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.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
3
Exposure effects
   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.

First aid
 
   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.

Transport.
UN number
2810
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
HS Code
2904 10 00