Phenophthalein Indicator 500 Grm
indicator ACS,Reag. Ph Eur
Manufacturer: Merck
Catalog ID: 107233.0500
Stock: In Stock
Description
| Catalogue Number | 107233 |
Product Information
| CAS number | 77-09-8 |
| EC index number | 604-076-00-1 |
| EC number | 201-004-7 |
| Grade | ACS,Reag. Ph Eur |
| Hill Formula | C₂₀H₁₄O₄ |
| Molar Mass | 318.32 g/mol |
| HS Code | 2932 20 10 |
Physicochemical Information
| Density | 1.296 g/cm3 (20 °C) |
| Melting Point | 263.7 °C |
| Vapor pressure | <0.00001 Pa (50 °C) |
| Bulk density | 350 - 450 kg/m3 |
| Solubility | 3.36 mg/l |
Storage and Shipping Information
| Storage | Storage temperature: no restrictions. |
Specifications
| Identity (UV/VIS-Spectrum) | passes test |
| Appearance | White to yellowish white powder |
| Clarity of the alkoholic solution (10 g/l ethanol) | passes test |
| Absorption maximum λmax. (buffer pH 9.8) | 551 - 554 nm |
| Spec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; buffer pH 9.8; calculated on dried substance) | 700 - 750 |
| Transition range | pH 8.2 - pH 9.8 almost colorless - red-violet |
| Transition range (according to ACS) | passes test |
| Transition interval (according Reag. Ph Eur) | passes test |
| Loss on drying (105 °C) | ≤ 1 % |
