产品介绍
Product Description
General description
α-Naphtholphthalein, a phthalein dye is a pH indicator between 7.3 (colorless) and 8.7 (greenish-blue). Applications include inks, markers, detecting viable cells, food storage, and many more.
技术参数
Specifications
| grade | practical grade |
| Quality Level | 200 |
| assay | >80% NaOH basis (titration) |
| form | powder |
| technique(s) | titration: suitable |
| pH | 7.3-8.7, colorless to blue-green |
| mp | 238-240 °C (lit.) |
| solubility | ethanol: 50 mg/mL, clear, red-orange |
| application(s) | diagnostic assay manufacturing hematology histology |
| storage temp. | room temp |
| SMILES string | Oc1ccc(c2ccccc12)C3(OC(=O)c4ccccc34)c5ccc(O)c6ccccc56 |
| InChI | 1S/C28H18O4/c29-25-15-13-23(17-7-1-3-9-19(17)25)28(22-12-6-5-11-21(22)27(31)32-28)24-14-16-26(30)20-10-4-2-8-18(20)24/h1-16,29-30H |
| InChI key | HQHBAGKIEAOSNM-UHFFFAOYSA-N |
