Sigma-Aldrich
P-Toluenesulfonic Acid, Monohydrate ACS Reagent 98.5% 500 gram
- Part Number:
- MIL-402885-500G
- Lead Time:
- 2-4 weeks
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- Quantity:
- each
- Size:
- 500 grams
- Style:
- chemical
- DOT Rated:
- HazMat Transport Fee Required
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Description
P-Toluenesulfonic Acid Monohydrate ACS Reagent ≥98.5% 500 Gram
- CAS Number 6192-52-5
- Linear Formula CH3C6H4SO3H · H2O
- Molecular Weight 190.22
- Beilstein/REAXYS Number 3568023
- EC Number 203-180-0
- MDL number MFCD00142137
- PubChem Substance ID 24865132
- NACRES NA.21
| Quality Level | 200 |
| Grade | ACS reagent |
| Vapor Density | 5.9 (vs air) |
| Assay | ≥98.5% |
| clarity of soln | passes test |
| Impurities | 9.5-11.5% water |
| ign. residue | ≤0.1% |
| mp | 103-106°C (lit.) |
| solubility | H2O: 10g + 50 mL, clear, colorless |
| anion traces | sulfate (SO42-): ≤0.3% |
| cation traces | Fe: ≤0.01% |
| Na: ≤0.002% | |
| heavy metals (as Pb): ≤0.001% |
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.
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.
Signal word Danger
Hazard statements H290-H314-H335
Precautionary statements P260-P280-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US), Eyeshields, Faceshields, Gloves
RIDADR UN 2585PSN2 8 / PGIII
WGK Germany 1
Documents
Warnings
Note: These chemicals are for research & laboratory use only. Your order will not be processed if you do not work for, and ship to, a registered laboratory or research facility. Not for topical applications. An official Declaration of Use form may be required.
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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. Prop 65 Warning
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