1.01306

Naphthol green B (C.I. 10020)

pH indicator

• Synonym(e): Naphthol green B (C.I. 10020), Green acid 1
• Empirische Formel (Hill-System): C₃₀H₁₅FeN₃Na₃O₁₅S₃
• CAS-Nummer: 19381-50-1
• Molekulargewicht: 878.46
• UNSPSC Code: 12352107
• EC Index Number: 243-010-2
• NACRES: NA.21
• MDL number: MFCD00003886

Eigenschaften

• Produktname: Naphthol green B (C.I. 10020), indicator
• Quality Segment: 200
• form: solid
• loss: ≤10% loss on drying, 105°C
• pH: 9.3 (20 °C, 10 g/L in H₂O)
• solubility: 160 g/L
• bulk density: 620 kg/m³
• λmax: 710-720 nm in water
• storage temp.: 2-30°C
• SMILES string: [Fe](Oc5c(c6c(cc(cc6)[S](=O)(=O)[O-])cc5)N=O)(Oc3c(c4c(cc(cc4)[S](=O)(=O)[O-])cc3)N=O)Oc1c(c2c(cc(cc2)[S](=O)(=O)[O-])cc1)N=O.[Na+].[Na+].[Na+]
• InChI: 1S/3C10H7NO5S.Fe.3Na/c3*12-9-4-1-6-5-7(17(14,15)16)2-3-8(6)10(9)11-13;;;;/h3*1-5,12H,(H,14,15,16);;;;/q;;;+3;3*+1/p-6
• InChI key: JMXROTHPANUTOJ-UHFFFAOYSA-H

Beschreibung

Analysis Note

Identity (UV/VIS-Spectrum): passes test
Absorption maximum λ_max. (water): 710 - 720 nm
Spec. Absorptivity A 1%/1cm (λ_max; 0.05g/l; water; calc. on dried substance): ≥ 100
Loss on Drying (105°C): ≤ 10 %

Sicherheitshinweise

• Lagerklasse: 11 - Combustible Solids
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable