Description
SPADNS is an analytical reagent supplied at p.a., ACS grade for specialised laboratory colorimetric and indicator applications. The substance is defined by CAS number 23647-14-5, empirical formula C₁₆H₉N₂Na₃O₁₁S₃ and a molar mass of 570,42 g/mol, giving a clear molecular basis for quantitative work. It is SPADNS is widely recognised in fluoride determination and related photometric methods where a stable, well-characterised dye reagent is required. Prepared to p.a., ACS specifications from manufacturer Carl ROTH, this material supports water analysis, environmental testing and teaching laboratories that depend on consistent reagent performance. EG number 245-803-9 aids regulatory and inventory documentation. The compact glass unit is practical for laboratories that maintain indicator and dye stocks for routine assays without holding large excess quantities, while retaining the chemical identity needed for reproducible analytical results.
This article belongs on Reagents for analysis (Ph. Eur., ASTM, DIN), in Analytical standards & reference materials.
Key features
- Assay: ≥80,0 %
- Appearance of solution: complies
- Loss on drying: ≤10 %
- Suitability as reagent for fluoride: complies
- CAS number: 23647-14-5
- Pack sizes: 10 g, 25 g
- EG nr.: 245-803-9
- Empirical formula: C₁₆H₉N₂Na₃O₁₁S₃
- Molar mass: 570,42 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Warning
Hazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about SPADNS, p.a., ACS, 10 g, glass
What is this article?
SPADNS, p.a., ACS, 10 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Reagents for analysis (Ph. Eur., ASTM, DIN), inside Analytical standards & reference materials, in Lab chemicals.
A reagent for analysis is a chemical whose impurities are limited so they do not become a signal in a titration, a digestion or a photometric method. Pharmacopoeia, ASTM and DIN names point at different limit lists. The grade, not only the identity, is the purchase.
A reference material is the article against which another result is compared. Its value is stated, and the uncertainty of that value is part of the product. An ICP or ion standard is a solution of known concentration. A volumetric standard is for titration. A chromatography standard is the peak you match. The grade names, including pharmacopoeia and ASTM, say which impurities were limited. Identity is checked on PubChem. Names follow IUPAC. Medicinal grades follow the European Pharmacopoeia and USP.
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The category is Analytical standards & reference materials. The sub-category is Reagents for analysis (Ph. Eur., ASTM, DIN). The catalogue is Lab chemicals.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Reference substances & reagents (other), Volumetric standard solutions (titration), Spectroscopy & physical property standards and Indicators & indicator solutions.
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