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Product 219916 is simply Hydroxy naphthol blue disodium salt. The dye is not deposited on crystals of sodium chloride. The product meets the specifications of the American Chemical Society and is suitability tested for calcium determination.
219916
Hydroxy naphthol blue disodium salt
ACS reagent
Sinonimo/i:
disodium;3-hydroxy-4-[(2-hydroxy-4-sulfonatonaphthalen-1-yl)diazenyl]-7-sulfonaphthalene-2-sulfonate
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5 G
28,00 €
100 G
117,00 €
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Cambia visualizzazione
5 G
28,00 €
100 G
117,00 €
About This Item
Formula condensata:
C20H12N2O11S3Na2
Numero CAS:
Peso molecolare:
598.49
Numero MDL:
Codice UNSPSC:
12171500
ID PubChem:
NACRES:
NA.47
Prodotti consigliati
Grado
ACS reagent
Livello qualitativo
Stato
powder, crystals or granules
tecniche
titration: suitable
pH
7.9
Punto di fusione
274 °C
Solubilità
water: soluble
Densità
2.130 g/cm3
λmax
650 nm
Compatibilità
passes test for determination of calcium
applicazioni
diagnostic assay manufacturing
hematology
histology
Temperatura di conservazione
room temp
Stringa SMILE
Oc1cc(c2ccccc2c1N=Nc3c(O)c(cc4cc(ccc34)S(=O)(=O)O[Na])S(=O)(=O)O[Na])S(O)(=O)=O
InChI
1S/C20H14N2O11S3.2Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;/h1-9,23-24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2
WPDDXLRAJOPBIR-UHFFFAOYSA-L
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Categorie correlate
Descrizione generale
Hydroxy naphthol blue disodium salt is a chemical compound belonging to the class of azo dyes commonly used as a pH indicator.It exists as small blue crystals. Hydroxy naphthol blue is suitable for the quantification of metal leaching in metal affinity chromatography. It changes color at pH range 12-13 from blue to reddish pink, in the presence of calcium ions and to deep blue in the presence of disodium ethylenediaminetetraacetic acid (EDTA).[1]
Avvertenze
Warning
Indicazioni di pericolo
Consigli di prudenza
Classi di pericolo
Eye Irrit. 2
Codice della classe di stoccaggio
11 - Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 3
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Food Chemicals Codex, Volumes 2-3
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Does this product consist of having Hydroxy Naphthol Blue deposited on crystals of Sodium Chloride in the concentration of about 1%?
1 risposta-
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Can solutions of 219916 (Naphthol Blue disodium salt) be prepared in water and kept for several days at room temperature?
1 risposta-
Solution stability studies for products sold as dry dyes are not conducted. The stability of the solution can vary greatly, from being stable for several days, weeks, or even years to failing after a couple of days. It is advisable to prepare the solution fresh and use it on the day of testing. After 1 week, preparing another fresh solution is recommended. Running tests on the freshly prepared solution and previously prepared solutions can help determine their effectiveness over time. If there is any difference between the freshly prepared solution and solutions that were previously prepared, it would provide the necessary insights. This approach is commonly used in research and development to assess solution stability over time.
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