1.09613

Toluene-4-sulfonic acid monohydrate

for analysis EMSURE^® ACS

• Synonym(s): Toluene-4-sulfonic acid monohydrate, p-Toluenesulfonic acid, Tosylic acid, Tosic acid, PTSA
• 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

• grade: ACS reagent
• Quality Level: 300
• product line: EMSURE^®
• Assay: ≥99.0% anhydrous basis (acidimetric)
• form: crystals
• autoignition temp.: 600 °C
• potency: 2570 mg/kg LD₅₀, oral (Rat)
• composition: Water, 9.5-11.5% Karl Fischer
• impurities: ≤0.1% Sulfated ash
• 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 (SO₄^2-): ≤0.3%
• cation traces: Fe: ≤0.01%; Na: ≤0.002%; heavy metals (as Pb): ≤0.001%
• storage temp.: 15-25°C
• 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

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 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H290 - H314 - H335 - H412
• Precautionary Statements: P234 - P260 - P273 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Aquatic Chronic 3 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1C - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 8A - Combustible, corrosive hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable