Substance
ID:716823
Names and Identifiers
IUPAC name
4-methylbenzene-1-sulfonic acid hydrate
IUPAC Traditional name
toluenesulfonic acid hydrate
Synonyms
p-Toluenesulfonic acid monohydrateTosic acid monohydratePTSA对甲苯磺酸一水合物
Registration numbers
EC Number
MDL Number
Beilstein Number
CAS Number
Merck Index
Properties
Physical Property
Flash Point
150°C(302°F)
Melting Point
103-106°C(anhy)
Boiling Point
140°C/20mm
Density
1.24
Product Information
Purity
98%
Safety Information
UN Number
UN2585
GHS Pictograms
Corrosive to metals, category 1
Skin corrosion, categories 1A,1B,1C
Serious eye damage, category 1
Acute toxicity (oral, dermal, inhalation), category 4
Skin irritation, category 2
Eye irritation, category 2
Skin sensitisation, category 1
Specific Target Organ Toxicity – Single exposure, category 3
TSCA Listed
是
Storage Warning
Hygroscopic
Hazard Class
8
Packing Group
III
GHS Hazard statements
H314-H319-H335
European Hazard Symbols
Irritant (Xi)GHS Precautionary statements
P280-P305+P351+P338-P309-P310
RTECS
XT6300000
Risk Statements
36/37/38
Safety Statements
26-37
Molecule Details
No Data Available
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Molecular Spectra
No Data Available
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References
• See also Pyridinium p-toluenesulfonate, A15708.
• 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).
• Adsorbed on silica gel, has been used for the dehydration of sec- and tert-alcohols to alkenes in good yield: Synthesis, 1159 (1985).
• For examples of the numerous applications as an organic-soluble acid catalyst, see: