p-Toluenesulfonic acid monohydrate , AR,≥98.5% , 6192-52-5

Synonym(s):
p-Toluenesulfonic acid monohydrate;p-Toluenesulfonic Acid, Monohydrate;1-Hydrate;p-Toluenesulfonic acid, Tosylic acid, Tosic acid, PTSA;Toluene-4-sulfonic acid monohydrate

CAS NO.：6192-52-5

Empirical Formula: C7H10O4S

Molecular Weight: 190.22

MDL number: MFCD00142137

EINECS: 203-180-0

PRODUCT Properties

• Melting point: 96-99 °C(lit.)
• Boiling point: 140°C 20mm
• Density: 1,24 g/cm³
• vapor density: 5.9 (vs air)
• refractive index: 1,382-1,384
• Flash point: 180 °C
• storage temp.: Store at +5°C to +30°C.
• solubility: H₂O: 0.1 g/mL, clear
• form: Solid
• Colour Index: 42655
• color: White to pink
• PH: 1 (650g/l, H2O, 20℃)(anhydrous substance)
• Water Solubility: soluble
• Sensitive: Hygroscopic
• Merck: 14,9533
• BRN: 3568023
• Stability: Stable. Incompatible with strong oxidizing agents, strong bases, most common metals. Protect from moisture.
• InChIKey: KJIFKLIQANRMOU-UHFFFAOYSA-N
• CAS DataBase Reference: 6192-52-5(CAS DataBase Reference)
• EPA Substance Registry System: Benzenesulfonic acid, 4-methyl-, monohydrate (6192-52-5)

Description and Uses

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.

Safety

• Symbol(GHS): GHS05,GHS07
• Signal word: Danger
• Hazard statements: H290-H314-H335-H412
• Precautionary statements: P234-P260-P273-P280-P303+P361+P353-P305+P351+P338
• Hazard Codes: Xi,C
• Risk Statements: 36/37/38-34-37
• Safety Statements: 26-37-45-36/37/39
• RIDADR: UN 2585 8/PG 3
• WGK Germany: -
• RTECS: XT6300000
• F: 3
• Autoignition Temperature: 600 °C
• TSCA: Yes
• HazardClass: 8
• PackingGroup: III
• HS Code: 29041000
• Toxicity: LD50 orally in Rabbit: 2570 mg/kg