Indophenol Blue
Indophenol Blue (CAS: 132-31-0), with the molecular formula C18H16N2O and a molecular weight of 276.33 g/mol, is a vibrant dye utilized primarily in biological staining applications. Its distinct absorption maximum at 606 nm makes it valuable in microscopy for visualizing cellular structures. This compound serves as a key reagent in hematology and histology for differential staining, aiding in the identification of specific tissues and cell types.

Biological Staining
Indophenol Blue is extensively used as a differential stain in histology and hematology. It aids in the visualization and identification of various cellular components and tissue structures under microscopic examination.
Cell Biology Reagent
In cell biology research, this dye serves as a reagent for specific staining protocols. Its spectral properties allow for precise optical detection and analysis of cellular morphology and organization.
Diagnostic Staining
The compound's utility extends to diagnostic procedures where accurate staining is crucial for identifying pathological conditions in tissue samples.
| Molecular weight | 276.33 |
|---|---|
| Empirical formula | C18H16N2O |
| Melting point | 168-170 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Colour Index Number | 49700 |
|---|---|
| Absorption | λmax 606 nm |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Indophenol Blue used for?
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Indophenol Blue is primarily used for biological staining in cell biology, hematology, and histology for visualizing cellular structures and tissues.
What is the CAS number and molecular formula for Indophenol Blue?
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The CAS number for Indophenol Blue is 132-31-0, and its molecular formula is C18H16N2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Indophenol Blue as a technical/research grade chemical. We do not represent this product as USP, BP, EP, or for pharmaceutical, food, or nutraceutical use.
How should Indophenol Blue be handled safely?
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Indophenol Blue is a Warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation. Avoid breathing dust and contact with eyes, skin, and clothing.
Is Indophenol Blue a controlled substance?
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Based on the provided data, Indophenol Blue is not listed as a controlled substance.
How is Indophenol Blue packed and shipped?
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Indophenol Blue is packed according to standard chemical handling procedures suitable for international export, ensuring product integrity and safety during transit.
How can I request a sample or quote for Indophenol Blue?
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To request a sample or a quote for Indophenol Blue, please contact our sales department via the website or by phone, providing your specific requirements.
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