TOSYLIC ACID

Tosylic Acid = p-Toluenesulfonic acid

CAS Number    : 104-15-4 
EC number       : 203-180-0
PubChem CID    : 6101
Chemical formula: C7H8O3S
Density            : 1.24 g/cm3
Melting point    : 105 to 107 °C
Solubility in water    : 67 g/100 mL

Tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H. 
Tosylic acid 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. 
Most often, TsOH refers to the monohydrate, TsOH.H2O

As with other aryl sulfonic acids, TsOH is a strong organic acid. 
Tosylic acid is about one million times stronger than benzoic acid.
Tosylic acid is one of the few strong acids that is solid and therefore is conveniently weighed and stored.

Preparation and uses of Tosylic Acid
TsOH is prepared on an industrial scale by the sulfonation of toluene. 
Common impurities include benzenesulfonic acid and sulfuric acid. 
TsOH monohydrate 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.

TsOH finds use in organic synthesis as an "organic-soluble" strong acid. 
Examples of uses include:
-Acetalization of an aldehyde.
-Fischer–Speier esterification.
-Transesterification reactions.

Tosylates
Alkyl tosylates are alkylating agents because tosylate is electron-withdrawing as well as a good leaving group. 
Tosylate is a pseudohalide. 
Toluenesulfonate esters undergo nucleophilic attack or elimination. 
Reduction of tosylate esters gives the hydrocarbon. 
Thus, tosylation followed by reduction allows for the deoxygenation of alcohols.

Reactions of Tosylic Acid
TsOH may be converted to p-toluenesulfonic anhydride by heating with phosphorus pentoxide.
When heated with acid and water, TsOH undergoes hydrolysis to toluene:
CH3C6H4SO3H + H2O → C6H5CH3 + H2SO4
This reaction is general for aryl sulfonic acids.

Tosylic acid, liquid, with more than 5% free sulfuric acid appears as colorless to black solid. 
Odorless or nearly odorless.
Tosylic acid is very soluble in water/sodium salt.
Tosylic acid solubility in water, g/100ml at 25 °C: 67 (freely soluble).
Tosylic acid normally stable; unstable at high temperature and pressure.

Use and Manufacturing of Tosylic Acid
Used in the chemical industry as a catalyst; also used in the manufacturing of textile dyes, drugs, cleaning agents, polymers, and paints; [HSDB] Used in photography (color bleaching); 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; 

Tosylic acid effect solubility of disperse dyes, initiator for catalytic polymerization of caprolactam, catalyst for dimerization of alphamethylstyrene.
Tosylic acid manufacture of dyes and oral antidiabetic drugs; conversion to sodium and ammonium salts for manufacture of hydrotropes.
Tosylic acid  catalyst in coatings, paint, polymer, and textile industries. 
Stabilizer for monomers and polymers, pharmaceutical intermediate, cleaning agents, plating additive.

Industry Uses of Tosylic Acid
-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
-Oxidizing/reducing agents
-Paint additives and coating additives not described by other categories
-Process regulators

Consumer Uses of Tosylic Acid
-Adhesives and sealants
-Agricultural products (non-pesticidal)
-Building/construction materials not covered elsewhere
-Cleaning and furnishing care products
-Fabric, textile, and leather products not covered elsewhere
-Paints and coatings

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

Application of Tosylic Acid
Tosylic acid 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.

p-Toluenesulfonic acid (PTSA), or tosylic acid (TsOH), is a corrosive, toxic, solid, strong organic acid. 
In monohydrate form, its formula is TsOH·H2O. 
Available in various quantities, PTSA is used as an organic-soluble acid catalyst in organic synthesis.
Toluenesulfonic acid, also known as tosylic acid, is a nonoxidizing organic acid that’s soluble in water, alcohols, ethers, and other polar solvents. 
This solubility makes it a very useful acid for a wide range of products that we use in our daily lives, such as pharmaceuticals and pesticides. 

Chemical Reagents of Tosylic Acid
A more familiar acid is benzoic acid. 
Naturally found in plants and proven to be a useful food preservative, benzoic acid is an important precursor for the industrial synthesis of many other organic substances. 
Tosylic acid puts into perspective how useful toluenesulfonic acid is, since it’s a million times stronger than benzoic acid. 
Tosylic acid has made it a common ingredient for everyday products such as pesticides, dyes, and detergents.

Medicinal Intermediates of Tosylic Acid
Tosylic acid is an intermediate for medicinal drugs, which is perhaps the most important use for toluenesulfonic acid manufacturers. 
Intermediates are the chemical compounds that form the building blocks of active pharmaceutical ingredients. 
These intermediates are used to create the bulk of pharmaceutical drugs, and they even aid in the research and development of medicines by pharma and biopharma companies.

Resin Curing Agents of Tosylic Acid
Tosylic acids are used in curing agents for materials such as plastics. 
These resins have two parts, an A and a B side. 
The B side, known as the hardener, is the epoxy curing agent. 
This curing agent reacts with the A side. 
These reactions create hard, thermoset materials that are often used as coatings and components in finished goods such as adhesives or composites. 
For further clarification, a thermoset material is a liquid or soft prepolymer or resin that has been irreversibly hardened through curing induced by heat or suitable radiation, which is promoted by high pressure or mixing with a catalyst.

Tosylic acid, 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. 
p-Toluenesulfonic acid is slightly soluble (in water) and an extremely strong acidic compound (based on its pKa). 
p-Toluenesulfonic acid (PTSA or pTsOH) or tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H. 
It is a white 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. 
Most often, TsOH refers to the monohydrate, TsOH•H2O. 
It is a white solid that is soluble in water, alcohols, and other polar organic solvents.

Tosylic acid has been used as a reducing agent for the reductive amination of ketones and aldehydes. 
In the presence of p-Toluenesulfonic acid monohydrate novel deazaflavin-cholestane hybrid compounds have been synthesized in a condensation reaction. 
2-Phenylethyl alpha-glucoside has also been synthesized in the presence of Tosylic acid.

Tosylic acid is made in the laboratory & in the industry by sulfonation of toluene using fuming sulfuric acid(SO3/H2SO4). 
Tosylic acid is known that the -CH3 group in toluene is activating group & directs the electrophilic substitution towards the ortho & para positions but the outcome of the reaction is mainly p-TSA (CH3-C6H4-SO3H).

Tosylic acid exists as monoclinic leaflets or prisms, mp 106–107 °C; pKa −6.62 (H2SO4).1 There is also a metastable form, mp 38 °C. 
Tosylic acid is a white crystalline powder, mp 103–106 °C.
Solubility: sol water (67 g/100 mL), ethanol, ethyl ether. 
The sodium salt is very soluble water.
Form Supplied in: widely available as the monohydrate, which is commonly used. 
Various metal salts are also commercially available.
Handling, Storage, and Precautions: highly toxic, oxidizing agent. 
Extremely irritating to the skin and mucous membranes. Use of gloves and protective clothing is recommended.Use in a fume hood.

p-Toluenesulfonic acid (PTSA or pTsOH) or tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H. 
Tosylic acid 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. 
Most often, TsOH refers to the monohydrate, TsOH.H2O. 
As with other aryl sulfonic acids, TsOH is a strong organic acid. 
Tosylic acid is about one million times stronger than benzoic acid. 
Tosylic acid is one of the few strong acids that is solid and therefore is conveniently weighed and stored.

A simple, expedient, and ecofriendly protocol for the one-pot synthesis of dihydropyrano[2,3-c]pyrazole derivatives using polystyrene-supported p-toluenesulfonic acid as a highly active and reusable heterogeneous catalyst in water has been developed. 
The core advantages of the present protocol are excellent yields, mild reaction conditions, broad substrate scope, and easy work-up procedure. 
This new protocol exemplifies the operationally simple synthesis of dihydropyrano[2,3-c]pyrazoles in a time-efficient and cost-effective manner.

p-Toluenesulfonic acid(PTSA) is an organic compound with the formula CH3C6H4SO3H. 
TsOH, as it is abbreviated, is a white solid that is soluble in water, alcohols, and other polar organic solvents. 
Most often, TsOH refers to the monohydrate, TsOH.H2O.

Tosylic acid is a strong organic acid, about a million times stronger than benzoic acid. 
Tosylic acid 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), TsOH is non-oxidizing.

Preparation and handling of Tosylic Acid
TsOH is prepared on an industrial scale by the sulfonation of toluene. It hydrates readily. Common impurities include benzenesulfonic acid and sulfuric acid. Impurities can be removed by recrystallization from concentrated hydrochloric acid followed by azeotropic drying.

Toluenesulfonic acid finds use in organic synthesis as an "organic-soluble" acid catalyst. Examples of uses:
-Acetalization of an aldehyde.
-Esterification of carboxylic acids.
-Transesterification of an ester.

p-Toluenesulfonic Acid is a white and crystalline organic sulfonic acid. 
In chemical and physical respect sulfonic acids are comparable with sulfuric acid, whereby they have the advantage, that they do not serve the oxidation of organic substances. 
Sulfonic Acids have physical properties, which are characteristic for diametrically compounds and very simple water solubility.

p-Toluenesulfonic Acid is used for the production of active pharmaceutical ingredients, fine chemicals, pesticides, resins, hardeners, paints and coatings as well as catalyst for electro conductive polymers. 
Additionally it is used as catalyst for acetalization of aldehydes, esterification of carboxylic acids, transesterification of esters.

First aid measures of Tosylic Acid
Inhalation
Move affected person to fresh air and keep warm and at rest in a position comfortable for breathing. 
Maintain an open airway. 
Loosen tight clothing such as collar, tie or belt. 
When breathing is difficult, properly trained personnel may assist affected person by administering oxygen. 
Get medical attention. 
Place unconscious person on their side in the recovery position and ensure breathing can take place.

Ingestion
Rinse mouth thoroughly with water. 
Give a few small glasses of water or milk to drink. 
Stop if the affected person feels sick as vomiting may be dangerous. 
Never give anything by mouth to an unconscious person.
Place unconscious person on their side in the recovery position and ensure breathing can take place. 
Keep affected person under observation. 
Get medical attention if symptoms are severe or persist.

Skin contact
It is important to remove the substance from the skin immediately. 
Rinse immediately with plenty of water. 
Continue to rinse for at least 15 minutes and get medical attention. 
Chemical burns must be treated by a physician.

Eye contact
Rinse immediately with plenty of water.
Do not rub eye. 
Remove any contact lenses and open eyelids wide apart. 
Continue to rinse for at least 15 minutes and get medical attention.

Protection of first aiders
It may be dangerous for first aid personnel to carry out mouth-to-mouth resuscitation.

Handling and storage of Tosylic Acid
Precautions for safe handling
Usage precautions
Read and follow manufacturer's recommendations. 
Wear protective clothing as described in Section 8 of this safety data sheet. 
Keep away from food, drink and animal feeding stuffs.
Keep container tightly sealed when not in use. 
This product is corrosive. 
Immediate first aid is imperative. 
Do not handle until all safety precautions have been read and understood. 
Do not handle broken packages without protective equipment. 
Do not reuse empty containers.

Advice on general occupational hygiene
Wash promptly if skin becomes contaminated. 
Take off contaminated clothing. 
Wash contaminated clothing before reuse.

Storage precautions
Store away from incompatible materials. 
Store locked up. 
Keep only in the original container. 
Keep container tightly closed, in a cool, well ventilated place. 
Keep containers upright. 
Protect containers from damage. 
Keep container dry.

Storage class
Corrosive storage.

Hand protection
Wear protective gloves. 
The most suitable glove should be chosen in consultation with the glove supplier/manufacturer, who can provide information about the breakthrough time of the
glove material. 
To protect hands from chemicals, gloves should comply with European Standard EN374. 
Considering the data specified by the glove manufacturer, check during use that the gloves are retaining their protective properties and change them as soon as any deterioration is detected. 
Frequent changes are recommended.

Substance identity

EC / List no.: 203-180-0
CAS no.: 104-15-4
Mol. formula: C7H8O3S

Hazard classification & labelling of Tosylic Acid
Warning! According to the harmonised classification and labelling (CLP00) approved by the European Union, this substance causes serious eye irritation, causes skin irritation and may cause respiratory irritation.
Additionally, the classification provided by companies to ECHA in REACH registrations identifies that this substance causes severe skin burns and eye damage and causes serious eye damage.

About Tosylic Acid
Tosylic acid is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 10 000 to < 100 000 tonnes per annum.
Tosylic acid is used by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.

Consumer Uses of Tosylic Acid
ECHA has no public registered data indicating whether or in which chemical products the substance might be used. 
ECHA has no public registered data on the routes by which  Tosylic acid is most likely to be released to the environment.

Article service life of Tosylic Acid
ECHA has no public registered data on the routes by which Tosylic acid is most likely to be released to the environment. 
ECHA has no public registered data indicating whether or into which articles the substance might have been processed.

Widespread uses by professional workers of Tosylic Acid
Tosylic acid is used in the following products: pH regulators and water treatment products and laboratory chemicals.
Tosylic acid is used in the following areas: health services and scientific research and development.
Other release to the environment of Tosylic acid is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.

Formulation or re-packing of Tosylic Acid
Tosylic acid is used in the following products: metal surface treatment products and non-metal-surface treatment products. 
Release to the environment of Tosylic acid can occur from industrial use: formulation of mixtures and formulation in materials.

Uses at industrial sites of Tosylic Acid
Tosylic acid is used in the following products: coating products, polymers and lubricants and greases.
Tosylic acid is used for the manufacture of: chemicals, fabricated metal products, plastic products and machinery and vehicles.
Release to the environment of Tosylic acid can occur from industrial use: as processing aid, as an intermediate step in further manufacturing of another substance (use of intermediates), for thermoplastic manufacture and as processing aid.

Manufacture of Tosylic Acid
Release to the environment of Tosylic acid can occur from industrial use: manufacturing of the substance.

Synonyms:
p-Toluenesulfonic acid
p-toluenesulphonic acid
p-toluenesulphonic acid (containing a maximum of 5 % H2SO4)
p-toluenesulphonic acid, (containing more than 5 % H2SO4)
Toluene-4-sulphonic acid
toluene-4-sulphonic acid
''π-τολουολοσουλφονικό οξύ (που περιέχει μέχρι και 5 % H2SO4) (el)
4-methylbenzensulfonová kyselina, obsah maximálně 5 % H2SO4 (cs)
4-metylbenzensulfonsyra, innehållande högst 5% H2SO4 (sv)
acid p-toluensulfonic(continut maxim de 5% H2SO4) (ro)
acide p-toluènesulfonique (contenant au maximum 5 % de H2SO4) (fr)
acido p-toluensolfonico (contenente non più del 5 % H2SO4) (it)
kwas 4-metylobenzenosulfonowy (zawierający maksymalnie 5% H2SO4) (pl)
kwas p-toluenosulfonowy (zawierający maksymalnie 5% H2SO4) (pl)
kyselina 4-metylbenzénsulfónová (s obsahom maximálne 5 % H2SO4) (sk)
p-Tolueenisulfonihappo, joka sisältää <5% rikkihappoa (fi)
p-tolueensulfonzuur (met maximum 5 % H2SO4) (nl)
p-tolueensulfoonhape, mis sisaldab <5% väävelhapet (et)
p-toluensulfonrūgštis (sudėtyje turinti maksimaliai 5 % sieros rūgšties) (lt)
p-toluensulfonska kiselina (sadrži maksimum 5 % H2SO4) (hr)
p-toluensulfonska kislina (z največ 5% žveplove kisline) (sl)
p-toluensulfonsyra, innehållande högst 5% H2SO4 (sv)
p-toluensulfonsyre (indeholdende højst 5 % H2SO4) (da)
p-toluensulfonsyre, med maks. 5 % H2SO4 (no)
p-Toluolsulfonsäure (mit höchstens 5 % H2SO4) (de)
p-toluolsulfoskābe, kas satur ne vairāk kā 5% sērskābes (lv)
p-тoлуенсулфонова киселина (съдържаща максимално 5% H2SO4) (bg)
toluol-4-szulfonsav (kénsav tartalom max. 5%) (hu)
ácido p-toluenossulfónico (contendo no máximo 5 % H2SO4) (pt)
ácido p-toluenosulfónico (con un contenido máximo de 5 % de H2SO4) (es)
Benzenesulfonic acid, 4-methyl-
4-methyl benzenesulphonic acid
4-methylbenzene-1-sulfonic acid
4-methylbenzene-1-sulfonic acid hydrate
4-Methylbenzenesulfonic acid
4-methylbenzenesulfonic acid
4-methylbenzenesulfonic acid hydrate
4-methylbenzenesulfonic acid hydrate
4-Methylbenzenesulfonic acid monohydrate
4-Methylbenzolsulfonsäure
4-Toluenesulfonic acid monohydrate
acide para toluene sulfonique
acido 4-metilbenzensulfonico
Benzenesulfonic acid, 4-methyl-
Benzenesulfonic acid, 4-methyl-, monohydrate
p-Toluenesulfonic acid
p-Toluenesulfonic acid
p-Toluenesulfonic Acid Monohydrate
p-Toluenesulfonic acid, Tosylic acid, Tosic acid, PTSA
p-Toluenesulphonic acid
p-toluenesulphonic acid
p-Toluenesulphonic acid
p-toluenesulphonic acid (containing a maximum of 5 % H2SO4)
p-toluenesulphonic acid hydrate
p-toluenesulphonic acid, containing a maximum of 5% H2SO4
Para Toluene Sulfonic Acid (PTSA)
Reaction mass of sulphuric acid and 7732-18-5
toluen 4-sulfonová kyselina
Toluene sulphonic acid
toluene-4-silphonic acid
TOLUENE-4-SULPHONIC ACID
Toluene-4-sulphonic acid
toluene-4-sulphonic acid
toluene-4-sulphonic acid
TOLUENESULFONIC ACID
Toluenesulfonic acid, p-
Toluol-4-sulfonsäure
Toluol-4-sulfonsäure Monohydrat
TSA
ácido 4-metilbenzenosulfónico
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
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
ar-Toluenesulfonic acid (8CI)
4-methyl-benzene sulphonic acid
4-methyl-benzene-sulphonic acid
DTXSID0026701
NSC2167
4-Toluenesulfinic acid sodium salt
(2r,4s)-toluene-4-sulfonic acid
NSC-2167
ZINC6427042
Tox21_202364
AC-794
BDBM50294029
MFCD00064387
MFCD02683442
NSC167068
STL199173
AKOS008966288
AM90497
AT27303
CS-W019626
DB03120
MCULE-1176533515
NSC-167068
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
A800907
AE-848/00887005
Q285878
SR-01000944854
J-001117
Q-200514
SR-01000944854-1
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