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For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf
1.04593
Hydroxynaphthol blue
metal (pM) indicator
Synonym(s):
Hydroxynaphthol blue, 2,2′-Dihydroxy-1,1′-azonaphthalene-3′,4,6′-trisulfonic acidtrisodiumsalt
About This Item
Recommended Products
Quality Level
form
solid
pH
2-3 (20 °C, 10 g/L in H2O)
solubility
340 g/L
bulk density
330 kg/m3
storage temp.
15-25°C
SMILES string
[Na+].[Na+].[Na+].[S](=O)(=O)([O-])c1cc2c(c(c1O)N\N=C3\c4c(cccc4)C(=CC\3=O)[S](=O)(=O)[O-])ccc(c2)[S](=O)(=O)[O-]
InChI
1S/C20H14N2O11S3.3Na/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;;;/h1-9,22,24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;;/q;3*+1/p-3/b21-18-;;;
InChI key
JQECMNGWLIFQLL-QRQZZYIYSA-K
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Application
- Facile synthesis of light harvesting semiconductor bismuth oxychloride nano photo-catalysts for efficient removal of hazardous organic pollutants.: This study demonstrates the use of hydroxylammonium chloride in the synthesis of bismuth oxychloride nanophotocatalysts. These catalysts are utilized for the degradation of hazardous organic compounds, highlighting a significant application in environmental remediation and analytical chemistry (Seddigi ZS et al., 2017).
- On-column derivatization using redox activity of porous graphitic carbon stationary phase: an approach to enhancement of separation selectivity of liquid chromatography.: This article explores the use of hydroxylammonium chloride in on-column derivatization during liquid chromatographic processes. It focuses on enhancing separation selectivity, illustrating its pivotal role in refining analytical methods for complex mixtures (Shibukawa M et al., 2003).
Analysis Note
Loss on Drying (105 °C): ≤ 5 %
Suitability as indicator (for metal titration): conforms
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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