p-Toluenesulfonic acid monohydrate

• Catalog No.: A14119
• CAS Number: 6192-52-5
• M. F.: C7H10O4S
• M. W.: 190.2169
• Purity: 98%

SYNONYMS

• Title: 对甲苯磺酸一水合物
• IUPAC name: 4-methylbenzene-1-sulfonic acid hydrate
• IUPAC Traditional name: toluenesulfonic acid hydrate
• Synonyms: Tosic acid monohydrate; PTSA

DATABASE IDS

• CAS Number: 6192-52-5
• Merck Index: 149533
• EC Number: 203-180-0
• Beilstein Number: 3568023
• MDL Number: MFCD00142137

PROPERTIES

• Purity: 98%
• Boiling Point: 140°C/20mm
• Density: 1.24
• Flash Point: 150°C(302°F)
• Melting Point: 103-106°C(anhy)
• GHS Hazard statements: H314-H319-H335
• European Hazard Symbols: Irritant (Xi)
• GHS Precautionary statements: P280-P305+P351+P338-P309-P310
• Risk Statements: 36/37/38
• RTECS: XT6300000
• Safety Statements: 26-37
• Storage Warning: Hygroscopic
• TSCA Listed: 是
• Hazard Class: 8
• UN Number: UN2585
• Packing Group: III

REFERENCES

• Esterifications: Org. Synth. Coll., 3, 146, 203, 610 (1955); 9, 722 (1998). Enamine formation: Org. Synth. Coll., 5, 277, 808 (1973); 6, 520 (1988). Protection of alcohols as their THP ethers: Org. Synth. Coll., 7, 334 (1990). Formation acetals: Org. Synth. Coll., 6, 567 (1988); 8, 155 (1993); 9, 251, 717 (1998), and oxazolidines: Org. Synth. Coll., 9, 300 (1998).
• For examples of the numerous applications as an organic-soluble acid catalyst, see:
• Adsorbed on silica gel, has been used for the dehydration of sec- and tert-alcohols to alkenes in good yield: Synthesis, 1159 (1985).
• See also Pyridinium p-toluenesulfonate, A15708.