Molekula
Xylenol Blue
Xylenol Blue is a chromogenic dye used primarily as an indicator in complexometric titrations and as a pH indicator in biochemical assays. It appears as a dark green powder and is soluble in water and ethanol. CAS: 125-31-5, Molecular Formula: C23H22O5S, Molecular Weight: 410.48 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies Xylenol Blue from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Xylenol Blue is a chromogenic dye used primarily as an indicator in complexometric titrations and as a pH indicator in biochemical assays. It appears as a dark green powder and is soluble in water and ethanol. CAS: 125-31-5, Molecular Formula: C23H22O5S, Molecular Weight: 410.48 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies Xylenol Blue from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Dark brown powder |
| Loss on Drying | 1% max |
| Specific absorbance | (E1%/1cm): 807 (@594nm in buffer) |
| Lambda max | 594nm (in buffer) |
| Colour Change | pH 8.0 (yellow) - pH 9.6 (blue) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 24 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 125-31-5 |
| Molecular Formula | C23H22O5S |
| Molecular Weight | 410.48 |
| SMILES | CC1=CC(=C(C=C1O)C)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=C(C=C(C(=C4)C)O)C |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29349944 |
| Tariff Code | 2934999090 |
Safety & GHS
-
Explosive
GHS01
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
For research and industrial use only
Documents
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.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Xylenol Blue used for?
Xylenol Blue is primarily used as a pH indicator in analytical chemistry and as a reagent in complexometric titrations.
What is the chemical formula and molecular weight of Xylenol Blue?
The formula is C23H22O5S with a molecular weight of 410.48 g/mol.
How should Xylenol Blue be stored?
Store at ambient temperature, protected from light and moisture.
What grade of Xylenol Blue is available?
Available in analytical grade for laboratory use.
Can Molekula supply Xylenol Blue in bulk?
Yes, Molekula can supply Xylenol Blue in bulk quantities—please contact sales for details.
What documentation comes with an order of Xylenol Blue?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS).
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.