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p-Toluenesulfonic Acid, Monohydrate

GR ACS

Synonym: 1-Hydrate, p-Toluenesulfonic Acid, Monohydrate

  • 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   200
assay   ≥99.0% anhydrous basis (acidimetric)
color   off-white
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
anion traces   sulfate (SO42-): ≤0.3%
cation traces   Fe: ≤ 0.01%
  Na: ≤ 0.002%
  heavy metals (as Pb): ≤ 0.001%
shipped in   ambient
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 room temperature.

Description

Packaging

500 g in Plastic bottle

Application

GR ACS

Analysis Note

Appearance (description)hygroscopic crystalsAppearance of solutionconformsAssay (acidimetric; calc. on anhydrous substance)99.0% minColoroff-whiteHeavy metals (as Pb)0.001% maxIron (Fe)0.01% maxResidue after ignition (600°C)0.1% maxSodium (Na)0.002% maxSulfate (SO4)0.3% maxWater (H2O)9.5-11.5%

Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
WGK Germany 
WGK 1
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles
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