PRODUCTS

PARA-TOLUENE SULFONIC ACID (PTSA)

Cas Number: 83949-32-0
Molecular Formula: C14H16O6S2
Molecular Weight: 344.4

APPLICATIONS

Para-toluene sulfonic acid (PTSA) is prepared on an industrial scale by the sulfonation of toluene.
Common impurities include benzenesulfonic acid and sulfuric acid.

Para-toluene sulfonic acid (PTSA) finds use in organic synthesis as an "organic-soluble" strong acid.

Examples of uses include:

-Acetalization of an aldehyde.
-Fischer–Speier esterification.
-Transesterification reactions.

Para-toluene sulfonic acid (PTSA) is prepared on an industrial scale by the sulfonation of toluene.

Para-toluene sulfonic acid (PTSA) finds use in organic synthesis as an "organic-soluble" strong acid.

Para-toluene sulfonic acid (PTSA) is used for acetalization of an aldehyde.
Further, Para-toluene sulfonic acid (PTSA) is used for Fischer–Speier esterification.
Para-toluene sulfonic acid (PTSA) is used for transesterification reactions.

Para-toluene sulfonic acid (PTSA) is used in the chemical industry as a catalyst.
Also, Para-toluene sulfonic acid (PTSA) is also used in the manufacturing of textile dyes and drugs.
Para-toluene sulfonic acid (PTSA) is used in cleaning agents, polymers, and paints.

Para-toluene sulfonic acid (PTSA) affects the solubility of disperse dyes.

Para-toluene sulfonic acid (PTSA) is an initiator for catalytic polymerization of caprolactam.

Para-toluene sulfonic acid (PTSA) is used in is catalyst for dimerization of alpha- methylstyrene.

Para-toluene sulfonic acid (PTSA) is used in stabilizers for monomers and polymers, pharmaceutical intermediate, and in cleaning agents

Para-toluene sulfonic acid (PTSA) is used in plating additive.

Manufacture of dyes and oral antidiabetic drugs is possible by Para-toluene sulfonic acid (PTSA).
Para-toluene sulfonic acid (PTSA) is used for conversion to sodium and ammonium salts for manufacture of hydrotropes.
Para-toluene sulfonic acid (PTSA) is used as catalyst in coatings, paint, polymer, and textile industries.

Uses of Para-toluene sulfonic acid (PTSA) involve:

Products that remove stains or discoloration of fabric (including color-safe bleaches) used in laundry
Cleaning products and household care
General household cleaning
Bleaching products
Solubility enhancer
Acid and Alkali Cleaning of Metals
Molding and Core Making
Electroplating
Photographic Processing

Other applications of Para-toluene sulfonic acid (PTSA) are:

Agricultural chemicals (non-pesticidal)
Catalyst in the manufacture of foam insulation
Corrosion inhibitors and anti-scaling agents
Finishing agents
Industrial Cleaners
Metal Working
Textile Dye Manufacturing
Polymers and Coatings Catalysts
Intermediates
Processing aids
Surface active agents
Adhesives
Sealants
Agricultural products
Building materials
Construction materials
Cleaning care products
Furnishing care products
Textile and leather products
Fabric products
Paints and coatings

Para-toluene sulfonic acid (PTSA) is used in the chemical industry as a catalyst.
Also, Para-toluene sulfonic acid (PTSA) is also used in the manufacturing of textile dyes, drugs, cleaning agents, polymers, and paints.

Para-toluene sulfonic acid (PTSA) is used in photography (color bleaching). Para-toluene sulfonic acid (PTSA) is used as a catalyst (with applications including resins in foundry cores), as a curing agent for resins, as a descaling agent (industrial metal cleaners), in electroplating bathes, plastics, dyes, pharmaceutical intermediates, food packaging adhesives, and as a coupling and wetting agent.
Para-toluene sulfonic acid (PTSA) is used in the synthesis of resveratrol.
Also, Para-toluene sulfonic acid (PTSA) is used in the synthesis of oxane derivatives as antimalarial agents.

Some features of Para-toluene sulfonic acid (PTSA):

Easy deliquescence
easy to make wood
cotton fabric dehydration and carbonization
insoluble in benzene and toluene.
generates p-cresol when alkali fusion.

Para-toluene sulfonic acid (PTSA) is used as a catalyst in the synthesis of resveratrol, in oxane derivatives as an antimalarial agent, as substituted piperidine and unsymmetrical benzyl.
Para-toluene sulfonic acid (PTSA) may be used as a catalyst in the synthesis of the following:

Unsymmetrical benzils.
Highly substituted piperidines.
1,3,5-Trisubstituted benzenes by trimerization of alkynes.
Triazoloquinazolinone and benzimidazoquinazolinone derivatives.
1,3,5-Trisubstituted pyrazoles derivatives.
Selenated ketene dithioacetals.

Para-toluene sulfonic acid (PTSA) acts as a catalyst in the preparation of 1,3,5-trisubstituted pyrazoles derivatives, selenated ketene dithioacetals, triazoloquinazolinone and benzimidazoquinazolinone derivatives.

Para-toluene sulfonic acid (PTSA) also serves as an intermediate in the esterification and in reductive amination reactions.
Para-toluene sulfonic acid (PTSA) is used in pharmaceuticals, pesticides, dyes and detergents, also used in plastics and printing coatings.
Para-toluene sulfonic acid (PTSA) is used in the preparation of cresol and Pharmaceutical (such as the preparation of doxycycline), pesticides (such as the preparation of dicofol), dyes and detergents and other industries.
Para-toluene sulfonic acid (PTSA) is also used in the plastics and printing coatings industry.
Para-toluene sulfonic acid (PTSA) contains an amount of water.
To estimate the total moisture present as impurity, the Karl Fischer method is used.
Impurities can be removed by recrystallization from its concentrated aqueous solution followed by azeotropic drying with toluene.

Commonly, Para-toluene sulfonic acid (PTSA) or tetrahydrate (TsOH4H2O) is preferred for industrial uses.
Para-toluene sulfonic acid (PTSA) may be used as a catalyst in the synthesis of the following:
Unsymmetrical benzils.
Highly substituted piperidines.
1,3,5-Trisubstituted benzenes by trimerization of alkynes.
Triazoloquinazolinone and benzimidazoquinazolinone derivatives.
1,3,5-Trisubstituted pyrazoles derivatives.
Selenated ketene dithioacetals.

Para-toluene sulfonic acid (PTSA) is also the commonly used acid catalyst in organic synthesis.
The latter used in the nucleophilic substitution reaction, also used as alcohol hydroxyl protective group:
p-CH3C6H4SO3Na + PCl5 →p-CH3C6H4SO2Cl.

Para-toluene sulfonic acid (PTSA) (Its molecular structural formula is p-CH3C6H4SO3H, also known as TsOH, English name is p-toluene sulfonic acid) referred to as PTS, is a non-oxidizing organic acid, white needle or powder crystals
Para-toluene sulfonic acid (PTSA) is soluble in water, alcohols, ethers and other polar solvents.
Para-toluene sulfonic acid (PTSA) is neutralized with sodium hydroxide and then obtains sodium p-toluene sulfonate, and react with phosphorus pentachloride, can obtains p-toluenesulfonyl chloride.
Preparation of methyl p-cresol acid in industry is by using concentrated sulfuric acid on the toluene sulfonation of Para-toluene sulfonic acid (PTSA).
The preparated Para-toluene sulfonic acid (PTSA) often contains benzene sulfonic acid and sulfuric acid impurities, and can be purified in recrystallization of concentrated hydrochloric acid, azeotropic drying.

Para-toluene sulfonic acid (PTSA) is widely used as catalyst agent in the synthesis of pharmaceuticals, pesticides, polymerization stabilizer and organic synthesis (esters, etc.), paint intermediates and resin curing agent.

The use of Para-toluene sulfonic acid (PTSA) also catalyzes the protection of dihydrofuran on the alcohol, carboxylic acid esterification, transesterification reaction, making the aldehyde generate acetal.

Other applications of Para-toluene sulfonic acid (PTSA):

(1) For chemical reagents, but also for dyes, organic synthesis.
(2) Used as the intermediates of medicine (such as doxycycline), pesticides (such as dicofol), dyes.
(3) For medicine, pesticides, dyes and detergents, but also for plastics and printing coatings.
(4) Widely used in the catalyst synthetic medicine, pesticides, polymerization of the stabilizer and organic synthesis (esters, etc.).
(5) Also used as medicine, paint intermediates and resin curing agent.
(6) Also used in detergents, plastics, coatings and so on.

Some uses of Para-toluene sulfonic acid (PTSA):

acid catalyst frequently used in nonpolar media
effective in carbonyl protection–deprotection
selectively cleaves N-Boc, other amine protecting groups
superior for enol ether, acetate preparation
used in esterifications, dehydrations, isomerizations, rearrangements

DESCRIPTION

Para-toluene sulfonic acid (PTSA) is an organic compound with the formula CH3C6H4SO3H.
TsOH, as Para-toluene sulfonic acid (PTSA) is abbreviated, is a white solid that is soluble in water, alcohols, and other polar organic solvents.

Para-toluene sulfonic acid (PTSA) is a white extremely hygroscopic solid that is soluble in water, alcohols, and other polar organic solvents.
The CH3C6H4SO2 group is known as the tosyl group and is often abbreviated as Ts or Tos.

Para-toluene sulfonic acid (PTSA), an oxonium salt, is an inexpensive and easy to handle organic catalyst used in organic synthesis.
The study of crystalline structure of Para-toluene sulfonic acid (PTSA) shows that it is monoclinic with P21/c space group.
The solubility of Para-toluene sulfonic acid (PTSA) in aqueous sulfuric acid solutions has been studied.

Para-toluene sulfonic acid (PTSA) or tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H.

As with other aryl sulfonic acids, Para-toluene sulfonic acid (PTSA) is a strong organic acid.
Para-toluene sulfonic acid (PTSA) is about one million times stronger than benzoic acid.[6] It is one of the few strong acids that is solid and therefore is conveniently weighed and stored.
Also, unlike some strong mineral acids (especially nitric acid, sulfuric acid, and per chloric acid), TsOH is non - oxidizing.

Para-toluene sulfonic acid (PTSA) or tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H.
Para-toluene sulfonic acid (PTSA) is a white solid that is soluble in water, alcohols, and other polar organic solvents.

Para-toluene sulfonic acid (PTSA) is one of the few strong acids that is solid and, hence, conveniently weighed.
Also, Para-toluene sulfonic acid (PTSA), liquid, with more than 5% free sulfuric acid appears as colorless to black solid.
Para-toluene sulfonic acid (PTSA) is odorless or nearly odorless.

Para-toluene sulfonic acid (PTSA) is an arenesulfonic acid that is benzenesulfonic acid in which the hydrogen at position 4 is replaced by a methyl group.
Para-toluene sulfonic acid (PTSA) is a member of toluenes and an arenesulfonic acid. Para-toluene sulfonic acid (PTSA) is a conjugate acid of a toluene-4-sulfonate.
To 500 ml a round bottom flask, fitted with a dean stark, which is connected with reflux condenser, 100 ml of toluene and 20 ml of concentrated sulfuric acid (d = 1,84) are placed.
The lower part of the dean stark trap additionally is filled with toluene.
Para-toluene sulfonic acid (PTSA) is a useful research chemical.

Para-toluene sulfonic acid (PTSA) is an organic compound with the formula CH3C6H4SO3H.
Also, Para-toluene sulfonic acid (PTSA) is an aromatic sulfonic acid, often used as a strong acid catalyst.
Para-toluene sulfonic acid (PTSA) has been used as a reducing agent for the reductive amination of ketones and aldehydes.

In the presence of Para-toluene sulfonic acid (PTSA) novel deazaflavin-cholestane hybrid compounds have been synthesized in a condensation reaction.
Para-toluene sulfonic acid (PTSA) has also been synthesized in the presence of p-Toluenesulfonic acid monohydrate.

Para-toluene sulfonic acid (PTSA) can also be used as an acid catalyst for organic reactions.
Additionally, Para-toluene sulfonic acid (PTSA) can serve as an alternative method to quench reactions instead of aqueous or organic soluble acids.
Para-toluene sulfonic acid (PTSA) is in a class of strong acids used in different fields of synthetic organic chemistry, used as an acid catalyst for Fischer-Speier estherification provides excellent conversion and the most common use is likely for 'Catch and Release' purifications.

Para-toluene sulfonic acid (PTSA) is widely used for the scavenging of amines and other basic functionalities including weakly basic anilines,borohydrides and metals such as Ni and Ag.
The reaction continues until no more water is forming.
When the reaction is complete heating is removed and reaction mixture is allowed to cool.
After addition of few ml of water Para-toluene sulfonic acid (PTSA) immediately crystallizes.
The reaction product is filtered, washed with small amount of water.

Para-toluene sulfonic acid (PTSA) has been specially optimized for use in organic applications and will not dissolve in methanol or any other solvents.
Para-toluene sulfonic acid (PTSA) delivers much higher recovery and has better flow characteristics than corresponding polymer.

Para-toluene sulfonic acid (PTSA) is is a strong organic acid.
Moreover, Para-toluene sulfonic acid (PTSA) is a non-oxidizing chemical compound.
Para-toluene sulfonic acid (PTSA) finds use in organic synthesis as an "organic-soluble" acid catalyst.

Para-toluene sulfonic acid (PTSA) is a strong organic acid, about a million times stronger than benzoic acid.
Para-toluene sulfonic acid (PTSA) is one of the few strong acids that is solid and, hence, conveniently weighed.
Also, unlike some of the strong mineral acids (especially nitric acid, sulfuric acid, and perchloric acid), Para-toluene sulfonic acid (PTSA) is non-oxidizing.
Para-toluene sulfonic acid (PTSA) belongs to the class of organic compounds known as p-methylbenzenesulfonates.
These are benzenesulfonic acids (or derivative thereof) carrying a methyl group at the para- position.

The purification is performed by dissolving in small amount of hot water and and treating with activated charcoal, then filtered into a conical flask and cooled with ice-salt.
To this strongly cooled solution gaseous hydrogen chloride is passed leading to the formation of white crystals which are filtered and dried.
Para-toluene sulfonic acid (PTSA) crystallizes with one molecule of water and melts at 104-105 °C.

The screening assessment focused on Para-toluene sulfonic acid (PTSA), also referred to as benzenesulfonic acid, 4-methyl-.
It was assessed under the third phase of the Chemicals Management Plan (CMP).
Para-toluene sulfonic acid (PTSA) does not occur naturally in the environment.

According to information gathered by the Government, Para-toluene sulfonic acid (PTSA) is mainly used in Canada in the manufacture of paints and coatings, and of plastic and rubber materials, among other uses.
Para-toluene sulfonic acid (PTSA) (PTSA or pTsOH) or tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H.

Para-toluene sulfonic acid (PTSA), also known as tosylate or para-toluene sulfonate, is a member of the class of compounds known as p-methylbenzenesulfonates.
p-Methylbenzenesulfonates are benzenesulfonic acids (or derivative thereof) carrying a methyl group at the para- position.
Para-toluene sulfonic acid (PTSA) is slightly soluble (in water) and an extremely strong acidic compound (based on its pKa).

As with other aryl sulfonic acids, Para-toluene sulfonic acid (PTSA) is a strong organic acid. It is about one million times stronger than benzoic acid.

Toluene-4-sulfonic acid is an arenesulfonic acid that is benzenesulfonic acid in which the hydrogen at position 4 is replaced by a methyl group.

Para-toluene sulfonic acid (PTSA) is a colorless hygroscopic solid.
Para-toluene sulfonic acid (PTSA), an oxonium salt, is an inexpensive and easy to handle organic catalyst used in organic synthesis.

PROPERTIES

Water Solubility: 2.3 g/L
logP: -0.88
logP: 1.67
logS: -1.9

Rotatable Bond Count: 1
Refractivity: 41.72 m³·mol⁻¹
Polarizability: 16.55 Å³

Physical State: Crystals
Color: white
Odor: none reported
pH: Not applicable.
Number of Rings: 1
Bioavailability: Yes
Rule of Five: Yes
Ghose Filter: No
Veber's Rule: No
MDDR-like Rule: No
Vapor Pressure: 0.0000027 mm Hg @ 25 deg C
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble.
Viscosity: Not available.
Boiling Point: 140 deg C @ 20 mmHg
Freezing/Melting Point: 103 deg C
Autoignition Temperature: 350 deg C ( 662.00 deg F)
Flash Point: 180 deg C ( 356.00 deg F)
pKa (Strongest Acidic): -2.1
Physiological Charge: -1
Hydrogen Acceptor Count: 3
Hydrogen Donor Count: 1
Polar Surface Area: 54.37 Å²

Specific Gravity/Density: Not available.
Molecular Formula: C7H8O3S.H2O
Molecular Weight: 190.22
Molecular Weight: 344.4
Hydrogen Bond Donor Count: 2
Hydrogen Bond Acceptor Count: 6
Rotatable Bond Count: 2
Exact Mass: 344.03883057
Monoisotopic Mass: 344.03883057
Topological Polar Surface Area: 126 Å²
Heavy Atom Count: 22
Formal Charge: 0
Complexity: 206
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 2
Compound Is Canonicalized: Yes

FIRST AID

Eyes:

In case of contact, immediately flush eyes with plenty of water for at least 15 minutes.
Get medical aid immediately.

Skin:

In case of contact, flush skin with plenty of water.
Remove contaminated clothing and shoes.
Get medical aid if irritation develops and persists.
Wash clothing before reuse.

Ingestion:

If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person.
Get medical aid.

Inhalation:

If inhaled, remove to fresh air.
If not breathing, give artificial respiration.
If breathing is difficult, give oxygen.
Get medical aid.

SAFETY AND HANDLING

Para-toluene sulfonic acid (PTSA) has moderate toxicity.
Para-toluene sulfonic acid (PTSA) used in the production process is toxic and has damage to the liver and hematopoietic system as well as the nervous system of the human body.
Concentrated Para-toluene sulfonic acid (PTSA) is extremely corrosive, so the production system equipment should maintain good tightness, to prevent leakage, the operator should wear protective equipment.

The use of plastic bags plus wooden boxes are needed for packaging.
Storage in a cool, ventilated, dry place is also needed for Para-toluene sulfonic acid (PTSA).

Handling:

Wash thoroughly after handling.
Remove contaminated clothing and wash before reuse.
Use with adequate ventilation.

Minimize dust generation and accumulation.
Keep container tightly closed. Avoid breathing dust.
Do not get in eyes.
Avoid contact with skin and clothing.

Storage:

Store Para-toluene sulfonic acid (PTSA) in a cool, dry, well-ventilated area away from incompatible substances.

SYNONYMS

P-TOLUENESULFONIC ACID
4-Methylbenzenesulfonic acid
104-15-4
4-Toluenesulfonic acid
p-Toluenesulphonic acid
Toluene-4-sulfonic acid
Tosic acid
p-Tolylsulfonic acid
Tosylic acid
p-Methylbenzenesulfonic acid
Toluenesulfonic acid
Benzenesulfonic acid, 4-methyl-
p-Methylphenylsulfonic acid
p-Toluenesulfonate
Eltesol
PARA-TOLUENE SULFONATE
PTSA
Cyclophil P T S A
ar-Toluenesulfonic acid
p-Toluolenesulfonic acid
p-Toluene sulfonate
P-Toluene Sulfonic acid
Methylbenzenesulfonic acid
Nacure 1040
Benzenesulfonic acid, methyl-
Cyzac 4040
Toluene-4-sulphonic acid
Kyselina p-toluenesulfonova
Manro PTSA 65 E
Manro PTSA 65 H
TSA-HP
TSA-MH
Manro PTSA 65 LS
Kyselina p-toluensulfonova
Toluene-p-sulfonate
K-Cure 1040
Toluenesulfonic acid (VAN)
Toluen-4-sulfonsaeure
p-toluene sulphonic acid
para-toluenesulfonic acid
HSDB 2026
UNII-QGV5ZG5741
NSC 167068
p-toluensulfonic acid
2(Or 4)-toluenesulphonic acid
toluene-p-sulfonic acid
p-Toluene-sulfonic acid
para-toluenesulphonic acid
paratoluene sulphonic acid
para toluene sulfonic acid
4-Toluene sulfonic acid
CHEMBL541253
QGV5ZG5741
4-TOLUENE-SULFONIC ACID
4-methylbenzene-1-sulfonic acid
CHEBI:27849
TsOH
WLN: WSQR D1
p-TSA
K-Cure 040
TSU
Kyselina p-toluensulfonova [Czech]
Kyselina p-toluenesulfonova [Czech]
EINECS 203-180-0
BRN 0472690
TosicAcid
4-sulphotoluene
AI3-26478
pTsOH
TosOH
Tosic acid p-TSA
p-toluenesulfonicacid
P-Toluene Sulfonic acid(monohydrate)
p-TsOH
Tos-OH
p-toluenesufonic acid
4-Toluenesulfonicacid
p-toluene sulfonicacid
p-toluene-sulfonicacid
p-toluensulphonic acid
paratoluensulfonic acid
Ts-OH
p-toluen sulfonic acid
p-toluenesuiphonic acid
p-toluenylsulfonic acid
paratoluenesulfonic acid
PTS ACID
4-toluenesulphonic acid
p -toluenesulfonic acid
p- toluenesulfonic acid
p-tolu-enesulfonic acid
p-toluyl sulphonic acid
toluene p-sulfonic acid
para-toluensulfonic acid
rho-toluenesulfonic acid
paratoluenesulphonic acid
p-toluene-sulphonic acid
toluene 4-sulfonic acid
toluene p-sulphonic acid
toluene-p-sulphonic acid
para toluenesulfonic acid
paratoluene sulfonic acid
paratoluene-sulfonic acid
SCHEMBL34
4-toluene sulphonic acid
4-toluene-sulphonic acid
rho-toluene sulfonic acid
para toluenesulphonic acid
para-toluene sulfonic acid
para-toluene-sulfonic acid
4methylbenzenesulfonic acid
DSSTox_CID_6701
4-methylphenylsulfonic acid
para toluene sulphonic acid
para-toluene sulphonic acid
EC 203-180-0
4-methylphenylsulphonic acid
m salt
(2r,4s)-toluene-4-sulfonic acid
NSC-2167
ZINC6427042
Tox21_202364
STL199173
AKOS008966288
AM90497
AT27303
CS-W019626
AE-848/00887005
Q285878
SR-01000944854
ar-Toluenesulfonic acid (8CI)
4-methyl-benzene sulphonic acid
4-methyl-benzene-sulphonic acid
DTXSID0026701
J-001117
Q-200514
SR-01000944854-1
DB03120
AC-794
BDBM50294029
MFCD00064387
MFCD02683442
NSC167068
MCULE-1176533515
NSC-167068
DSSTox_RID_78188
NCIOpen2_002932
NCIOpen2_003096
4-methylbenzenesulphonic acid
DSSTox_GSID_26701
4-methyl-benzenesulfonic acid
4-methylbenzene sulfonic acid
4-methylbenzene-sulfonic acid
4-11-00-00241 (Beilstein Handbook Reference)
70788-37-3
4-methyl benzene sulfonic acid
NSC2167
4-Toluenesulfinic acid sodiu
NCGC00248146-01
NCGC00248146-02
NCGC00248146-03
NCGC00259913-01
AS-82150
BP-31081
CAS-104-15-4
Para-Toluenesulfonic acid-polymer supported
DB-050363
FT-0648905
T0267
X8700
EN300-16830
C06677
273T276
4-methylbenzenesulfonic acid
ParaTolune Sulfonic Acid
p-toluenesulfonic acid
4-methylbenzenesulfonic acid
4-toluenesulfonic acid
benzenesulfonic acid, 4-methyl-
benzenesulfonic acid, 4-methyl-, hydrate
benzenesulfonic acid, 4-methyl-, monohydrate
p-toluenesulfonic acid monohydrate
toluene-4-sulfonic acid
toluene-4-sulfonic acid monohydrate
A800907
Toluene sulfonic acid (INCI) 4-Toluenesulfonic acid
F1908-0079
p-Toluenesulfonic acid, polymer-supported, 1.0-2.0 mmol/g on polystyrene
25231-46-3
536747-74-7

p-toluenesulfonic acid, p-toluenesulphonic acid, 4-toluenesulfonic acid, tosic acid, p-tolylsulfonic acid, toluene-4-sulfonic acid, toluenesulfonic acid, tosylic acid, benzenesulfonic acid, 4-methyl, p-methylbenzenesulfonic acid
Toluene sulfonic acid; 4-Methylbenzenesulfonic acid; 4-Toluenesulfonic acid; Benzenesulfonic acid, 4-methyl-; Benzenesulfonic acid, methyl-
Cyclophil P T S A; Cyzac 4040; Eltesol; K-Cure 040; K-Cure 1040; Kyselina p-toluenesulfonova [Czech]; Kyselina p-toluensulfonova [Czech]; Manro PTSA 65 E; Manro PTSA 65 H; Manro PTSA 65 LS; Methylbenzenesulfonic acid; Nacure 1040; TSA-HP; TSA-MH; Toluenesulfonic acid; Tosic acid; p-Methylbenzenesulfonic acid; p-Methylphenylsulfonic acid
p-Toluene sulfonate; p-Toluolenesulfonic acid; p-Tolylsulfonic acid; Toluene-4-sulphonic acid; ar-Toluenesulfonic acid (8CI); [ChemIDplus] UN2583; UN2585 (not more than 5% free sulfuric acid)
Methylbenzenesulfonic acid
Toluenesulfonic acid
Tosic acid
P-Toluene Sulfonic Acid
P-Toluene Sulphonic Acid
para toluene sulfonic acid
para toluene sulphonic acid
PARATOLUENE SULPHONIC ACID
PTS ACID

Ar-Toluenesulfonic acid; p-Methylbenzenesulfonic acid; p-Methylphenylsulfonic acid; p-Toluenesulfonate; p-Toluenesulfonic acid; p-Toluolenesulfonic acid; p-Tolylsulfonic acid; Benzenesulfonic acid, methyl-; Cyclophil P T S A; Eltesol; Methylbenzenesulfonic acid; Toluene-p-sulfonate; Toluene-4-sulfonic acid; Toluenesulfonic acid; Tosic acid; 4-Methylbenzenesulfonic acid; 4-Toluenesulfonic acid; p-Toluenesulphonic acid; Kyselina p-toluenesulfonova; Kyselina p-toluensulfonova; Manro PTSA 65 E; Manro PTSA 65 H; Manro PTSA 65 LS; Tsa-hp; Tsa-mh; PTSA; Tosylic acid; Cyzac 4040; K-Cure 1040; NSC 167068; Nacure 1040; toluene-4-sulphonic acid