1.00255

Diphenylamine-4-sulfonic acid barium salt

redox indicator

• Synonym(s): Diphenylamine-4-sulfonic acid barium salt, 4-Anilinobenzene sulfonic acid barium salt, Barium diphenylaminesulfonate
• Empirical Formula (Hill Notation): C₂₄H₂₀BaN₂O₆S₂
• CAS Number: 6211-24-1
• Molecular Weight: 633.88
• MDL number: MFCD00007497
• UNSPSC Code: 12352107
• EC Index Number: 228-278-0

Properties

• Quality Level: 200
• form: solid
• technique(s): titration: suitable
• loss: ≤5% loss on drying, 105°C
• pH: 5.9 (20 °C, 10 g/L in H₂O, slurry)
• mp: 300 °C
• solubility: water: soluble at 20 °C
• bulk density: 220 kg/m³
• λmax: 290-295 nm in water
• storage temp.: 2-30°C
• InChI: 1S/2C12H11NO3S.Ba/c2*14-17(15,16)12-8-6-11(7-9-12)13-10-4-2-1-3-5-10;/h2*1-9,13H,(H,14,15,16);/q;;+2/p-2
• InChI key: IVCNVXFNTKXMCA-UHFFFAOYSA-L

Description

Analysis Note

Identity (IR-spectrum): passes test
Absorption maximum λ_max. (water): 290 - 295 nm
Spec. Absorptivity A 1%/1cm (λ_max; 0.001 %; water; calculated on dried substance): 600 - 700
Loss on Drying (105 °C): ≤ 5 %
Suitability as redox indicator: passes test

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H302 + H332
• Precautionary Statements: P261 - P264 - P271 - P301 + P312 - P304 + P340 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Inhalation - Acute Tox. 4 Oral
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable