α-Naphtholphthalein
Alpha-Naphtholphthalein (CAS 596-01-0) is a chemical compound with the molecular formula C28H18O4. It is primarily utilized as a pH indicator, exhibiting a distinct colour change within a specific pH range. This property makes it valuable in various analytical and laboratory applications where precise pH monitoring is essential for accurate experimental outcomes and quality control processes.
pH Indicator
Alpha-Naphtholphthalein serves as a pH indicator, changing colour from colorless to reddish to blue-green in the pH range of 7.3 to 8.7. This characteristic is crucial for titrations and other analytical procedures requiring visual pH determination.
Laboratory Reagent
As a laboratory reagent, it is employed in diverse chemical analyses and research settings. Its use contributes to the accuracy of experiments by providing a clear visual cue for pH shifts.
Cell Biology Applications
Within cell biology, Alpha-Naphtholphthalein may be used in staining or as an indicator in specific biological assays where pH monitoring is critical for cellular processes.
Hematology and Histology Stains
This compound finds application as a component in stains or indicator solutions within hematology and histology, aiding in the visualisation and differentiation of cellular structures.
| Molecular weight | 418.44 |
|---|---|
| Empirical formula | C28H18O4 |
| Melting point | 238-240 °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.
| Ph Range | 7.3 - 8.7, colorless-reddish to blue-green |
|---|
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 Alpha-Naphtholphthalein used for?
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Alpha-Naphtholphthalein is primarily used as a pH indicator, changing colour from colorless to reddish to blue-green within the pH range of 7.3–8.7. It is also utilised as a laboratory reagent in various analytical and research applications, including in cell biology, hematology, and histology staining.
What are the CAS number and formula for Alpha-Naphtholphthalein?
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The CAS number for Alpha-Naphtholphthalein is 596-01-0, and its molecular formula is C28H18O4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Alpha-Naphtholphthalein as a technical/research grade chemical. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should Alpha-Naphtholphthalein be handled safely?
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Handle Alpha-Naphtholphthalein with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. It is classified as causing skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Ensure adequate ventilation.
How is Alpha-Naphtholphthalein packed and shipped?
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Alpha-Naphtholphthalein is carefully packed and exported by Tech Serve Solutions in compliance with all relevant shipping regulations to ensure safe and secure delivery.
How can I request a sample or quote for Alpha-Naphtholphthalein?
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To request a sample or a quote for Alpha-Naphtholphthalein, please contact our sales department via the website or email, providing your specific requirements.
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