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1.09613 Supelco

Toluene-4-sulfonic acid monohydrate

for analysis EMSURE® ACS

Synonym: Toluene-4-sulfonic acid monohydrate, p-Toluenesulfonic acid, Tosylic acid, Tosic acid, PTSA

  • CAS Number 6192-52-5

  • Empirical Formula (Hill Notation) C7H8O3S · xH2O

  • Molecular Weight 172.20 (anhydrous basis)

  •  MDL number MFCD00142137

  •  EC Index Number 203-180-0

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Properties

Quality Level   300
grade   ACS reagent
assay   ≥99.0% anhydrous basis (acidimetric)
form   crystals
autoignition temp.   600 °C
potency   2570 mg/kg LD50, oral (Rat)
pH   1 (20 °C, 650 g/L in H2O, anhydrous substance)
bp   140 °C/27 hPa
mp   56 °C (Elimination of water of crystallisation)
transition temp   flash point 180 °C
solubility   750 g/L
bulk density   510 kg/m3
anion traces   sulfate (SO42-): ≤0.3%
cation traces   Fe: ≤ 0.01%
  Na: ≤ 0.002%
  heavy metals (as Pb): ≤ 0.001%
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
storage conditions   Store at +5°C to +30°C.

Description

Linkage

Replaces: TX0770; TX0770-3

Analysis Note

Assay (acidimetric, calc. on anhydrous substance): ≥ 99.0 %
Identity: passes test
Appearance of solution: conforms
Sulphate (SO₄): ≤ 0.3 %
Heavy metals (as Pb): ≤ 0.001 %
Fe (Iron): ≤ 0.01 %
Na (Sodium): ≤ 0.002 %
TLC-Test: passes test
Sulfated ash: ≤ 0.1 %
Water (according to Karl Fischer): 9.5 - 11.5 %

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