402885

p-Toluenesulfonic acid monohydrate

ACS reagent, ≥98.5%

• 동의어(들): 4-Methylbenzenesulfonic acid monohydrate, 4-Toluenesulfonic acid monohydrate, PTSA monohydrate, TsOH monohydrate
• Linear Formula: CH₃C₆H₄SO₃H · H₂O
• CAS Number: 6192-52-5
• Molecular Weight: 190.22
• Beilstein: 3568023
• EC Number: 203-180-0
• MDL number: MFCD00142137
• UNSPSC 코드: 12352100
• PubChem Substance ID: 24865132
• NACRES: NA.21

속성

• Grade: ACS reagent
• Quality Level: 200
• vapor density: 5.9 (vs air)
• 분석: ≥98.5%
• 양식: solid
• 용액 투명도: passes test
• 불순물: 9.5-11.5% water
• 무기 잔류물: ≤0.1%
• mp: 103-106 °C (lit.)
• solubility: H₂O: 10g + 50 mL, clear, colorless
• 음이온 미량물: sulfate (SO₄^2-): ≤0.3%
• 양이온 미량물: Fe: ≤0.01%; Na: ≤0.002%; heavy metals (as Pb): ≤0.001%
• 작용기: tosylate
• SMILES string: [H]O[H].Cc1ccc(cc1)S(O)(=O)=O
• InChI: 1S/C7H8O3S.H2O/c1-6-2-4-7(5-3-6)11(8,9)10;/h2-5H,1H3,(H,8,9,10);1H2
• InChI key: KJIFKLIQANRMOU-UHFFFAOYSA-N

설명

일반 설명

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.

애플리케이션

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.

안전성 정보

• 픽토그램: GHS07
• 신호어: Warning
• 유해 및 위험 성명서: H315,H319,H335
• 예방조치 성명서: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• 표적 기관: Respiratory system
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• 개인 보호 장비: dust mask type N95 (US), Eyeshields, Faceshields, Gloves