Molekula
Xylidyl blue I, sodium salt, ≥ 95%
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Xylidyl Blue I, sodium salt (also known as Magon sulfonate), is an azo dye used as a metallochromic reagent for the colorimetric and spectrophotometric determination of magnesium, for example in serum magnesium assays. In alkaline solution it forms a coloured complex with magnesium ions, and the resulting change in absorbance allows magnesium to be measured, making it useful in clinical chemistry and research applications. This product has a purity of ≥ 95%, with a CAS number of 14936-97-1, molecular formula C25H20N3NaO6S, and a molecular weight of 513.50 g/mol. It is stable at ambient storage conditions and carries no signal word for hazard classification. Molekula supplies Xylidyl Blue I, sodium salt from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | Purple to off-purple |
| Loss on Drying | ≤ 10.0% |
| Assay (HPLC) | ⩾ 95.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 90035475 |
| CAS Number | 14936-97-1 |
| IUPAC Name | sodium 3-[[3-[(2,4-dimethylphenyl)carbamoyl]-2-hydroxynaphthalen-1-yl]diazenyl]-4-hydroxybenzenesulfonate |
| EC Number | 239-012-8 |
| Molecular Formula | C25H20N3NaO6S |
| Molecular Weight | 513.50 |
| Exact Mass | 513.0971 |
| SMILES | CC1=CC(=C(C=C1)NC(=O)C2=CC3=CC=CC=C3C(=C2O)N=NC4=C(C=CC(=C4)S(=O)(=O)[O-])O)C.[Na+] |
| InChIKey | LKSHJHJGLORTGD-UHFFFAOYSA-M |
| InChI | InChI=1S/C25H21N3O6S.Na/c1-14-7-9-20(15(2)11-14)26-25(31)19-12-16-5-3-4-6-18(16)23(24(19)30)28-27-21-13-17(35(32,33)34)8-10-22(21)29;/h3-13,29-30H,1-2H3,(H,26,31)(H,32,33,34);/q;+1/p-1 |
| PubChem CID | 135442960 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29270040 |
| Tariff Code | 2927000090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- MAGON SULFONATE SODIUM SALT
- XB-I; Magonsulfonate
- Xylidyl blue I
- Xylylazo Violet I
- XYLYLAZO VIOLET I [SPECTROPHOTOMETRIC REAGENT FOR MG]
Frequently asked questions
What is Xylidyl blue I, sodium salt used for?
Xylidyl blue I is primarily used as a metallochromic reagent for the colorimetric and spectrophotometric determination of magnesium, for example in serum magnesium assays.
What is the chemical formula and molecular weight of Xylidyl blue I, sodium salt?
The chemical formula is **C₂₅H₂₀N₃NaO₆S** and the molecular weight is **513.50 g/mol**.
How should Xylidyl blue I, sodium salt be stored?
Store at **ambient temperature** in a tightly sealed container, protected from excessive light and moisture.
What purity grade is available for Xylidyl blue I, sodium salt?
Molekula supplies this product at a purity of **≥ 95%**, suitable for most analytical and laboratory applications.
Can Molekula supply Xylidyl blue I, sodium salt in bulk quantities?
Yes, we offer bulk quantities upon request, subject to availability and minimum order quantities.
What documentation is provided with an order of Xylidyl blue I, sodium salt?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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