98-40-8

Basic information

• Product Name: 2-(ethylamino)toluene-4-sulphonic acid
• Synonyms: 2-(ethylamino)toluene-4-sulphonic acid;3-(ETHYLAMINO)-4-METHYL-BENZENESULPHONICACID;3-Ethylamino-p-toluolsulfonsure;3-(Ethylamino)-4-methylbenzenesulfonic acid;3-Ethylamino-4-methylbenzenesulfonic acid
• CAS NO: 98-40-8
• Molecular Formula: C₉H₁₃NO₃S
• Molecular Weight: 215.26942
• EINECS: 202-664-9
• Mol File: 98-40-8.mol
• Article Data: 1

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.309g/cm³
• Refractive Index: 1.578
• CAS DataBase Reference: 2-(ethylamino)toluene-4-sulphonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(ethylamino)toluene-4-sulphonic acid(98-40-8)
• EPA Substance Registry System: 2-(ethylamino)toluene-4-sulphonic acid(98-40-8)

Safety Data

• Hazardous Substances Data: 98-40-8(Hazardous Substances Data)

Usage

Common uses

Reagent in the synthesis of pharmaceuticals and dyes, production of chemical intermediates

Derivative

Toluene

Substitution

Sulphonic acid group at the 4-position, ethylamino group at the 2-position

Physical form

White to off-white solid at room temperature

Solubility

Soluble in water and other polar solvents

Abbreviation

ETSA

Industrial applications

Utilized for its chemical and catalytic properties

InChI:InChI=1/C9H13NO3S/c1-3-10-9-6-8(14(11,12)13)5-4-7(9)2/h4-6,10H,3H2,1-2H3,(H,11,12,13)

Upstream product

• 94-68-8 N-ethyl-2-methylaniline 
• 95-53-4 o-toluidine 

Downstream Products

• 120-37-6 3-ethylamino-4-methylphenol 

Relevant articles and documents

Production process of alkaline red intermediate 3-ethylamino-p-methylphenol

The invention relates to a production process of an alkaline red intermediate 3-ethylamino p-methylphenol. The production process specifically comprises the following steps: step 1, an alkylation reaction: carrying out alkylation reaction on o-toluidine and absolute ethyl alcohol under the action of a catalyst magnetic solid acid to generate an alkylate mixture; and then rectifying the alkylate mixture to obtain the N-ethyl o-toluidine; wherein the reaction temperature of the alkylation reaction is 60-120 DEG C; wherein the addition amount of the magnetic solid acid is 4-6% of the mass ratio of the feed liquid; step 2, a sulfonation reaction: carrying out sulfonation reaction on the N-ethyl o-toluidine and fuming sulfuric acid to generate 3ethylamino-p-toluenesulfonic acid; step 3, a hydroxylation reaction: carrying out hydroxylation reaction on 3ethylamino p-toluenesulfonic acid and potassium hydroxide to generate 3-ethylamino p-methylphenol potassium salt; and step 4, acid precipitation: reacting the 3-ethylamino p-methylphenol potassium salt with hydrochloric acid to prepare the 3-ethylamino p-methylphenol. The production process is high in yield and short in reaction time.