133-78-8

Basic information

• Product Name: M-TOLUIDINE-4-SULFONIC ACID
• Synonyms: 3-METHYLANILINE-4-SULFONIC ACID;4-AMINO-2-METHYLBENZENE-1-SULFONIC ACID;5-AMINOTOLUENE-2-SULFONIC ACID;M-TOLUIDINE-4-SULFONIC ACID;4-amino-o-toluenesulfonicaci;4-amino-o-toluenesulfonicacid;kyselina3-toluidin-6-sulfonova;5-aminotoluene-2-sulphonic acid
• CAS NO: 133-78-8
• Molecular Formula: C₇H₉NO₃S
• Molecular Weight: 187.22
• EINECS: 205-120-9
• Mol File: 133-78-8.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 500°C (rough estimate)
• Flash Point: °C
• Appearance: /
• Density: 1.3553 (rough estimate)
• Refractive Index: 1.6100 (estimate)
• PKA: -1.13±0.50(Predicted)
• Water Solubility: 4.5g/L(20 oC)
• CAS DataBase Reference: M-TOLUIDINE-4-SULFONIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: M-TOLUIDINE-4-SULFONIC ACID(133-78-8)
• EPA Substance Registry System: M-TOLUIDINE-4-SULFONIC ACID(133-78-8)

Safety Data

• Statements: 36/37/38
• Safety Statements: 26-36
• RTECS: XT6325000
• Hazardous Substances Data: 133-78-8(Hazardous Substances Data)

Usage

Safety Profile

A severe eye irritant. When heated to decomposition it emitsvery toxic fumes of NOx and SOx.

InChI:InChI=1/C7H9NO3S/c1-5-4-6(8)2-3-7(5)12(9,10)11/h2-4H,8H2,1H3,(H,9,10,11)

Upstream product

• 854811-60-2 5-sulfamino-toluene-2-sulfonic acid 
• 108-44-1 1-amino-3-methylbenzene 
• 7664-93-9 sulfuric acid 
• 99-08-1 1-methyl-3-nitrobenzene 
• 110-01-0 thiophene 
• 73291-07-3 m-ditoluidinium sulfate 
• 73291-07-3 m-toluidine; hydrogen sulfate 

Downstream Products

• 602-99-3 3-methyl-2,4,6-trinitrophenol 
• 21320-92-3 5-amino-toluene-2-sulfonyl fluoride 
• 553-97-9 2-Methyl-1,4-benzoquinone 
• 7512-71-2 5-sulfanilylamino-toluene-2-sulfonic acid 
• 71642-16-5 3-methyl-2,4,6-tribromoaniline 
• 125744-13-0 4-(N-n-hexyl-tosylamino)-2-methyl-4'-nitro-diphenylsulfone 

Relevant articles and documents

Kinetics of Thermal Decomposition of Arylammonium Sulfates. Part 2. m-Ditoluidinium Sulfate

The thermal decomposition of m-ditoluidinium sulfate (m-DTS) has been studied and 2-methylsulfanilic acid (2-MSA) has been found to be the decomposition product.Isothermal TGA data on m-DTS were fitted in Avrami-Erofeev (n=2, 3), Contracting area, Contrac

Triazinyl reactive dyes containing additional fiber reactive groups bound through the sulfonylalkylaminoalkylamino bridge

The invention relates to novel useful reactive dyes of the formula I STR1 in which: F is a radical selected from the group consisting of metal-free or metal-containing monoazo or disazo dyes containing at least one --SO3 H group, anthraquinone dyes, sulfophthalocyanine dyes, formazan dyes, phenazine dyes, oxanine dyes and nitroaryl dyes, R is hydrogen, C1 -C4 alkyl which is unsubstituted or substituted with --COOH or --SO3 H, cyanoethyl, or hydroxyethyl, X is fluorine, chlorine, bromine, --SO3 H, phenylsulfonyl or C1 -C4 -alkylsulfonyl, P is 1 or 2 and A is a radical of the formula STR2 in which: the groups designated "alk" are independently of each other straight or branched polymethylene radicals having 2 to 6 carbon atoms, and Z is β-halogenoethyl, vinyl, β-sulfatoethyl, β-thiosulfatoethyl or βacetoxyethyl.

Process for the preparation of aminoarylsulphonic acids in sulfolene solvent

Aromatic aminosulphonic acids which have a reduced content of discoloring by-products are obtained when aromatic amines are reacted with a sulphonating agent in a reaction medium at least some of which consists of tetramethylene sulphone.