O-Cresolphthalein extrapure 25GM | |||
10494SG025 | 287250217DS | ||
Extrapure | 2872502 | ||
596-27-0 | 53743 | ||
C22H18O4 | April 2019 | ||
346.39 | March 2024 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | White to tan powder. | White to tan powder. |
2 | Solubility | Passes | Insoluble in water, soluble in alcohol. |
3 | Melting point | 224°C | 219°C-225°C |
4 | pH transition range(pH 8.2-9.8) | Complies | colourless to violet red. |
5 | Absorption, L max | 566nm | 566nm&381nm (in 0.1N NaOH) |
6 | Loss on drying,110°C | 0.08% | 4%max |
Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |