TX0770

p-Toluenesulfonic Acid, Monohydrate

GR ACS

• Synonym(s): p-Toluenesulfonic Acid, Monohydrate, 1-Hydrate
• Empirical Formula (Hill Notation): C₇H₈O₃S · xH₂O
• CAS Number: 6192-52-5
• Molecular Weight: 172.20 (anhydrous basis)
• MDL number: MFCD00142137
• UNSPSC Code: 12352106
• EC Index Number: 203-180-0

Properties

• Quality Level: 200
• assay: ≥99.0% anhydrous basis (acidimetric)
• form: crystals
• composition: Water, 9.5-11.5%
• ign. residue: ≤0.1% (600 °C)
• 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 (SO₄^2-): ≤0.3%
• cation traces: Fe: ≤0.01%; Na: ≤0.002%; heavy metals (as Pb): ≤0.001%
• shipped in: ambient
• storage temp.: room temp
• 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

Description

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 Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H319,H335
• pcodes: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable