Molekula
Xylenol Orange tetrasodium salt
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
Xylenol Orange tetrasodium salt is a synthetic, water-soluble sulfonephthalein dye widely used as a metal ion indicator in complexometric titrations, particularly for calcium, magnesium, and rare earth metals. It forms vivid color changes upon binding, making it essential in analytical chemistry and industrial process monitoring. This chemical has the CAS number 3618-43-7, a molecular formula of C31H28Na4O13SN2, and a molecular weight of 760.58 g/mol. It is stable at ambient storage conditions and carries no signal word for hazard classification. Molekula supplies Xylenol Orange tetrasodium 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.
Often bought together
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — $147.40 per pack
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100 g — $456.00 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Reddish brown crystalline powder |
| Identification | Conforms to reference |
| Loss on Drying | ≤15% |
| Cresol red | Pass |
| Sensitivity Test | Pass |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 11641547 |
| CAS Number | 3618-43-7 |
| Molecular Formula | C31H28Na4O13SN2 |
| Molecular Weight | 760.58 |
| SMILES | [Na].O=C(O)CN(CC(=O)O)CC=1C=C(C=C(C1O)C)C2(OS(=O)(=O)C=3C=CC=CC32)C=4C=C(C(O)=C(C4)CN(CC(=O)O)CC(=O)O)C |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 3204165000 |
| Tariff Code | 3204200090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
No alternate names recorded for this product.
Frequently asked questions
What is Xylenol Orange tetrasodium salt primarily used for?
Xylenol Orange tetrasodium salt is commonly used as a pH indicator in analytical chemistry and as a metallochromic indicator in EDTA titrations, particularly for metals such as bismuth, thorium, zirconium, zinc, lead and rare earth elements.
What is the molecular formula and molecular weight of Xylenol Orange tetrasodium salt?
The molecular formula is C₃₁H₂₈Na₄O₁₃SN₂, and the molecular weight is 760.58 g/mol.
How should Xylenol Orange tetrasodium salt be stored?
Store at ambient temperature in a cool, dry place, away from direct sunlight and moisture.
What grades or purities of Xylenol Orange tetrasodium salt does Molekula supply?
Molekula supplies analytical reagent (AR) grade Xylenol Orange tetrasodium salt, suitable for high-precision applications.
Can Molekula supply Xylenol Orange tetrasodium salt in bulk quantities?
Yes, Molekula can provide Xylenol Orange tetrasodium salt in bulk quantities. Please contact us for specific packaging options and minimum order quantities.
What documentation comes with an order of Xylenol Orange tetrasodium salt?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.