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7134-04-5

Basic Information
CAS No.: 7134-04-5
Name: o-Cresolsulfonic acid
Article Data: 13
Molecular Structure:
Molecular Structure of 7134-04-5 (o-Cresolsulfonic acid)
Formula: C7H8O4S
Molecular Weight: 188.204
Synonyms: m-Toluenesulfonicacid, 4-hydroxy- (7CI,8CI);2-Methyl-1-phenol-4-sulfonic acid;2-Methylphenol-4-sulfonic acid;3-Methyl-4-hydroxybenzenesulfonic acid;4-(o-Cresol)sulfonic acid;Benzenesulfonic acid,4-hydroxy-3-methyl-;
Density: 1.482 g/cm3
PSA: 82.98000
LogP: 2.02810
Synthetic route
95-48-7

ortho-cresol

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

Conditions
ConditionsYield
With sulfuric acid
With sulfuric acid at 100℃; for 1.5h;
95-48-7

ortho-cresol

A

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

B

71552-44-8

2-hydroxy-toluene-3,5-disulfonic acid

C

4016-01-7

2-hydroxy-toluene-3-sulfonic acid

Conditions
ConditionsYield
With sulfuric acid at 25℃; Rate constant; Product distribution; Mechanism; the sulphonation of various aromatic ethers and alcohols at variation of H2SO4 concentration;
With sulfuric acid at 25℃;A 56 % Spectr.
B n/a
C 44 % Spectr.
With sulfuric acid at 35℃; for 0.2h;A 58 % Spectr.
B 7 % Spectr.
C 35 % Spectr.
With sulfuric acid at 30℃; for 24h;A 54 % Spectr.
B 25 % Spectr.
C 21 % Spectr.
95-48-7

ortho-cresol

A

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

B

4016-01-7

2-hydroxy-toluene-3-sulfonic acid

Conditions
ConditionsYield
With sulfur trioxide In nitromethane at 0℃; for 0.5h;

4-Hydroxy-3-methyl-benzenesulfonic acid 2,4-dinitro-phenyl ester

A

51-28-5

2,4-Dinitrophenol

B

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

Conditions
ConditionsYield
With water at 60℃; Rate constant; μ = 1.0, pH 5.2-13.0;
7664-93-9

sulfuric acid

95-48-7

ortho-cresol

A

7134-03-4

3-hydroxy-4-methylbenzenesulfonic acid

B

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

7664-93-9

sulfuric acid

95-48-7

ortho-cresol

A

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

B

o-cresol-sulfonic acid-(6)

o-cresol-sulfonic acid-(6)

diazotized 6-amino-1-methyl-benzene-sulfonic acid-(3)

diazotized 6-amino-1-methyl-benzene-sulfonic acid-(3)

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

Conditions
ConditionsYield
durch Verkochen;

5-sulfo-toluene-2-diazonium-betaine

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

7134-04-5

6-hydroxy-toluene-3-sulfonic acid

75-36-5

acetyl chloride

2-methyl-4-sulfophenyl acetate

Conditions
ConditionsYield
In ethyl acetate at 15℃; for 3h;93%
7134-04-5

6-hydroxy-toluene-3-sulfonic acid

108-24-7

acetic anhydride

313681-72-0

(3-methyl-4-acetoxy)benzenesulfonyl chloride

Conditions
ConditionsYield
Stage #1: 6-hydroxy-toluene-3-sulfonic acid; acetic anhydride In dichloromethane for 12h;
Stage #2: With phosphorus pentachloride In diethyl ether at 20℃; for 0.25h;
27%
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Chemistry

 Molecule structure of o-Cresolsulfonic acid (CAS NO.7134-04-5):

Molecular Weight: 188.20 g/mol
Molecular Formula: C7H8O4S
Density: 1.482 g/cm3
Index of Refraction: 1.597
Molar Refractivity: 43.25 cm3
Molar Volume: 126.9 cm3
Polarizability: 17.14×10-24 cm3
Surface Tension: 60.3 dyne/cm 
InChI: InChI=1/C7H8O4S/c1-5-6(8)3-2-4-7(5)12(9,10)11/h2-4,8H,1H3,(H,9,10,11)
InChIKey: BZOVBIIWPDQIHF-UHFFFAOYAR
Product Categories of o-Cresolsulfonic acid (CAS NO.7134-04-5): Miscellaneous

Specification

 o-Cresolsulfonic acid (CAS NO.7134-04-5) is also named as 3-Hydroxy-2-methylbenzenesulfonic acid ; Benzenesulfonic acid, 3-hydroxy-2-methyl- ; o-Methylphenol sulfonic acid ; 2-Methylphenol sulfonic acid ; 2-Cresol Sulfonic Acid ; 3-Methyl-4-hydroxybenzenesulfonic acid ; 4-Hydroxy-3-methylbenzenesulfonic acid .