27150

4,5-Dihydroxy-2,7-naphthalindisulfonsäure Dinatriumsalz Dihydrat

puriss. p.a., ACS reagent, for the detection of Ag, ClO₃^-, Cr, Hg, NO₂^-, NO₃^2-, Ti, ≥98.0%

• Synonym(e): 1,8-Dihydroxynaphthalin-3,6-disulfonsäure Dinatriumsalz, Chromotropsäure Dinatriumsalz Dihydrat
• Lineare Formel: (HO)₂C₁₀H₄(SO₃Na)₂·2H₂O
• CAS-Nummer: 5808-22-0
• Molekulargewicht: 400.29
• EG-Nummer: 204-972-9
• MDL-Nummer: MFCD00150612
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 57648221
• NACRES: NA.21

Eigenschaften

• Qualität: ACS reagent; puriss. p.a.; for the detection of Ag, ClO₃^-, Cr, Hg, NO₂^-, NO₃^2-, Ti
• Qualitätsniveau: 200
• Assay: ≥98.0%
• Form: powder
• Methode(n): UV/Vis spectroscopy: suitable
• Verunreinigungen: 8-10% water
• Farbe: off-white
• mp (Schmelzpunkt): >300 °C (lit.)
• SMILES String: O.O.[Na+].[Na+].Oc1cc(cc2cc(cc(O)c12)S([O-])(=O)=O)S([O-])(=O)=O
• InChI: 1S/C10H8O8S2.2Na.2H2O/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8;;;;/h1-4,11-12H,(H,13,14,15)(H,16,17,18);;;2*1H2/q;2*+1;;/p-2
• InChIKey: QUEAKWJKJBFNEG-UHFFFAOYSA-L

Beschreibung

Allgemeine Beschreibung

Chromotropic acid disodium salt dihydrate is a useful analytical reagent widely used in analytical chemistry for fluorometric determinations.

Anwendung

Chromotropic acid disodium salt dihydrate may be employed as a chromogenic reagent in the following studies:      

• Quantification of dipyrone in various pharmaceutical preparations.   
• Highly sensitive method for rapid determination of beryllium by a fluorimetric method.

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• H-Sätze: H315,H319,H335
• P-Sätze: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Zielorgane: Respiratory system
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Gloves