o-Cresolphthalein Complexone
o-Cresolphthalein Complexone (CAS: 2411-89-4), with the molecular formula C32H32N2O12 and a molecular weight of 636.60 g/mol, is a specialized organic compound. It serves as a vital reagent in various analytical and diagnostic applications. Its primary utility lies in its ability to form coloured complexes, making it valuable in staining procedures and in the quantitative determination of certain substances in biological and chemical samples.
- IUPAC
- o-Cresolphthalein-3′,3′′-bis-methyleneiminodiacetic acid,o-Cresolphthalexon,Metal phthalein,Phthalein purple,Xylenylphthalein-bisiminodiacetic acid
- Synonyms
- o-Cresolphthalein-3′,3′′-bis-methyleneiminodiacetic acido-CresolphthaleonMetal phthaleinPhthalein purpleXylenylphthalein-bisiminodiacetic acid

Hematology and Histology Staining
o-Cresolphthalein Complexone is employed as a component in staining solutions used in hematology and histology. It aids in differential staining techniques, helping to visualize cellular structures and components under microscopy.
Cell Biology Research
In cell biology, this compound can be utilized as a reagent for specific staining or detection methods. Its complex-forming capabilities are leveraged to study cellular processes and morphology.
Analytical Reagent
This chemical acts as a complexometric indicator or reagent in analytical chemistry. It is particularly useful in titrations and assays where the formation of coloured complexes signifies reaction endpoints or concentrations.
| Molecular weight | 636.60 |
|---|---|
| Empirical formula | C32H32N2O12 |
| Solubility | NaOH: soluble50 mg/mL |
| Melting point | 181-185 °C (dec.)(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 o-Cresolphthalein Complexone used for?
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o-Cresolphthalein Complexone is used as a reagent in hematology, histology, and cell biology for staining purposes, and as an analytical reagent in chemical assays and titrations.
What is the CAS number and molecular formula for o-Cresolphthalein Complexone?
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The CAS number is 2411-89-4, and the molecular formula is C32H32N2O12.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies o-Cresolphthalein Complexone as a technical/research grade chemical. We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should o-Cresolphthalein Complexone be handled safely?
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Handle with appropriate personal protective equipment, including eyeshields and gloves. Ensure adequate ventilation and use a suitable respirator filter (type N95 or P1) if airborne exposure is likely. Refer to the safety data sheet for detailed handling information.
Is o-Cresolphthalein Complexone a controlled substance?
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Based on the provided data, there is no indication that o-Cresolphthalein Complexone is a controlled substance.
How is o-Cresolphthalein Complexone packed, shipped, and exported?
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Tech Serve Solutions carefully packs and ships o-Cresolphthalein Complexone in compliance with all relevant national and international regulations for chemical export.
How can I request a sample or quote for o-Cresolphthalein Complexone?
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To request a sample or a quote for o-Cresolphthalein Complexone, please contact our sales department via the website or by phone.
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