p-Toluenesulfonic acid monohydrate
SIAL/402885 - ACS reagent, ≥98.5%
Synonym: 4-
CAS Number: 6192-52-5
Empirical Formula (Hill Notation): C7H8O3S · H2O
Molecular Weight: 190.22
EC Number: 203-180-0
MDL Number: MFCD00142137
Linear Formula: CH3C6H4SO3H · H2O
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 402885-100G
This image depicts SKU: 402885-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 402885-500G
This image depicts SKU: 402885-500G
| anion traces | sulfate (SO42-): ≤0.3% |
| assay | ≥98.5% |
| cation traces | Fe: ≤0.01% |
| heavy metals (as Pb): ≤0.001% | |
| Na: ≤0.002% | |
| clarity of soln | passes test |
| form | solid |
| grade | ACS reagent |
| ign. residue | ≤0.1% |
| impurities | 9.5-11.5% water |
| InChI | 1S/C7H8O3S.H2O/c1-6-2-4-7 |
| InChI key | KJIFKLIQANRMOU-UHFFFAOYSA |
| mp | 103-106 °C (lit.) |
| Quality Level | 200  |
| SMILES string | [H]O[H].Cc1ccc(cc1)S(O)(= |
| solubility | H2O: 10g + 50 mL, clear, colorless |
| vapor density | 5.9 (vs air) |
| Application: | p-Toluenesulfonic acid monohydrate (p-TsOH·H2O) 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. |
| General description: | p-Toluenesulfonic acid monohydrate, an oxonium salt, is an inexpensive and easy to handle organic catalyst used in organic synthesis. The study of its crystalline structure shows that it is monoclinic with P21/c space group. Its solubility in aqueous sulfuric acid solutions has been studied. |
| Packaging: | 100, 500 g in poly bottle |
| Packaging: | 5 g in glass bottle |
| Symbol |  GHS05 |
| Signal word | Danger |
| Hazard statements | H290 - H314 - H412 |
| Precautionary statements | P234 - P260 - P273 - P280 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 34-37 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 2585PSN2 8 / PGIII |
| WGK Germany | WGK 1 |
| Purity | ≥98.5% |
| mp | 103-106 °C (lit.) |
| UNSPSC | 12352100 |