Description
p-Toluenesulphonic acid monohydrate is an organic acid for synthesis supplied at a minimum purity of 98 %. Its empirical formula is C₇H₈O₃S·H₂O, with a molar mass of 190,22 g/mol and CAS number 6192-52-5. The monohydrate shows a density of 1,345 g/cm³, a boiling point of 140 °C and a flash point of 180 °C, providing clear physical reference data for handling and process design. Laboratories use p-toluenesulphonic acid monohydrate in esterifications, protecting-group chemistry and other condensation or acid-catalysed transformations that benefit from a solid, weighable acid source. The defined minimum assay of 98 % supports reproducible stoichiometry in preparative work. EG number 203-180-0 identifies the substance for regulatory and documentation purposes alongside the CAS registry entry. Clear specification of molar mass, density and thermal data helps integrate the material into existing laboratory protocols for organic synthesis.
This article is part of Acids, in Acids & bases.
Key features
- Appearance: colorless to pink crystals
- Assay: ≥98 %
- Iron (Fe): ≤0.001 %
- Free sulphuric acid: ≤0.3 %
- CAS number: 6192-52-5
- Pack sizes: 1 kg, 10 kg, 500 g
- EG nr.: 203-180-0
- Purity: min. 98 %
- Empirical formula: C₇H₈O₃S·H₂O
- Molar mass: 190,22 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
WarningHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about p-Toluenesulphonic acid monohydrate, min. 98 %, for synthesis, 1 kg, plastic
What is this article?
p-Toluenesulphonic acid monohydrate, min. 98 %, for synthesis, 1 kg, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Acids, inside Acids & bases, in Lab chemicals.
An acid on this shelf is the substance itself, concentrated or as a stated solution: hydrochloric, sulfuric, nitric, acetic and the rest. Concentration, purity and the trace metals decide the use. A concentrated acid and a volumetric solution of the same name are different products, and both burn.
An acid donates a proton. A base accepts one. In the bottle, the practical differences are the concentration, the purity and the anion or cation that comes along. Concentrated mineral acids are a different article from a dilute volumetric solution. The water in the acid, and the trace metals, decide whether it can be used for analysis. Check the substance on PubChem and the classification on ECHA CLP. Transport is the UNECE dangerous-goods framework. The legal texts are the CLP Regulation and REACH.
Which category should I open next?
The category is Acids & bases. The sub-category is Acids. The catalogue is Lab chemicals.
Shelves beside this one are Bases & alkalis.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.