Xylenol orange
From Wikipedia, the free encyclopedia
| Xylenol orange | |
|---|---|
 |
|
| General | |
| Systematic name | 3,3′-Bis[N,N-bis(carboxymethyl)aminomethyl]-o- cresolsulfonephthalein tetrasodium salt |
| Molecular formula | C31H28N2O13SNa4 |
| Molar mass | 760.59 g mol−1 |
| CAS number | [6318-43-7] |
| Properties | |
| Solubility in water | Fully miscible |
| Melting point | 195°C (368 K) |
| Flash point | Greater than 93.3°C (200°F) |
| R-phrases | R10, R20, R21, R22, R36, R38 |
| S-phrases | S1/2, S26, S27, S28, S62, S63 |
| NFPA 704 |
1
2
2
|
| Except where noted otherwise, data are given for materials in their standard state (at 25°C, 100 kPa) Infobox disclaimer and references |
|
Xylenol orange is an organic reagent, most commonly used as a tetrasodium salt as an indicator for metal titrations. Historically, commercial preparations of it have been notoriously impure, sometimes consisting of as little as 20% xylenol orange, and containing large amounts of semi-xylenol orange and iminodiacetic acid. Purities as high as 90% are now available.
 |
This article about an organic compound is a stub. You can help Wikipedia by expanding it. |
