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p-Toluenesulfonic acid monohydrate, ACS, 98.5+%, Thermo Scientific Chemicals
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Catalog No. AA4400236
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p-Toluenesulfonic acid monohydrate is used as a catalyst in the synthesis of resveratrol, in oxane derivatives as an antimalarial agent, as substituted piperidine and unsymmetrical benzyl. It acts as a catalyst in the preparation of 1,3,5-trisubstituted pyrazoles derivatives, selenated ketene dithioacetals, triazoloquinazolinone and benzimidazoquinazolinone derivatives. It also serves as an intermediate in the esterification and in reductive amination reactions.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Chemical Identifiers

CAS

6192-52-5

Molecular Formula

C7H10O4S

Molecular Weight (g/mol)

190.213

MDL Number

MFCD00142137

InChI Key

KJIFKLIQANRMOU-UHFFFAOYSA-N

Synonym

p-toluenesulfonic acid monohydrate, 4-methylbenzenesulfonic acid hydrate, 4-methylbenzenesulfonic acid monohydrate, p-toluene sulfonic acid monohydrate, unii-3bto78gaff, benzenesulfonic acid, 4-methyl-, monohydrate, ptoluenesulfonic acid, p-toluenesulfonic acid, monohydrate, 3bto78gaff, 4-methylbenzene-1-sulfonic acid hydrate

PubChem CID

521998

IUPAC Name

4-methylbenzenesulfonic acid;hydrate

SMILES

CC1=CC=C(C=C1)S(=O)(=O)O.O

Specifications

Melting Point

103°C to 106°C (anhydrous)

Boiling Point

140°C (20mmHg)

Color

Pink to White

UN Number

UN2585

Beilstein

3568023

Merck Index

14,9533

Formula Weight

190.22 (172.20 Anhydrous)

Percent Purity

≥98.5%

Grade

ACS

Density

1.24 g/mL

Quantity

500 g

Flash Point

150°C (302°F)

Odor

Mild

Physical Form

Crystalline

Sensitivity

Hygroscopic

Chemical Name or Material

p-Toluenesulfonic acid monohydrate

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Hazard Category

H314-H335-H373

Hazard Statement

GHS H Statement
H314-H335-H319
Causes severe skin burns and eye damage.
May cause respiratory irritation.
Causes serious eye irritation.

Precautionary Statement

P260-P264b-P271-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P363-P501c

DOTInformation

Transport Hazard Class: 8; Packing Group: III; Proper Shipping Name: ARYL SULFONIC ACIDS, SOLID

EINECSNumber

203-180-0

RTECSNumber

DB7164000

TSCA

Yes

Recommended Storage

Ambient temperatures; Store under Argon
SDS

RUO – Research Use Only

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